HIV感染今天能控制住吗？
Can HIV infection be controlled today?
可以。HIV会逆转录并整合进CD4+T细胞基因组，单靠免疫系统无法清除，但抗逆转录病毒治疗（ART）通过联合多种药物在逆转录、整合、蛋白成熟等不同环节阻断病毒复制。规律服药后病毒载量可降至检测不到，CD4细胞逐渐恢复。达到“检测不到”即不具备传染性（U=U），感染者可以长期健康生活，并阻断母婴和性传播。
Yes. HIV reverse-transcribes and integrates into the CD4+ T-cell genome, so the immune system alone cannot clear it, but antiretroviral therapy (ART) blocks viral replication at multiple steps—reverse transcription, integration, and protein maturation. With consistent treatment, viral load falls to undetectable and CD4 cells recover. Undetectable means untransmittable (U=U): people with HIV can live long, healthy lives and do not transmit the virus sexually or to their babies.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#HIV #抗逆转录病毒治疗 #U=U
基本传染数R0是什么意思？
What does the basic reproduction number R0 mean?
R0指在无免疫人群中一个感染者平均传染的人数，R0大于1疫情会扩散，小于1则会消退，是防控决策的关键指标。
R₀ is the average number one infected person spreads to in a susceptible population; above 1 an outbreak grows, below 1 it fades—a key control metric.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
Heesterbeek 等《基本传染数 R0：一个工具箱》（Journal of the Royal Society Interface, 2002）
Heesterbeek et al., R0: a toolbox (Journal of the Royal Society Interface, 2002)
#R0 #流行病学
为什么烟草使用仍被称为全球第一大可预防的死因？
Why is tobacco still called the world's leading preventable cause of death?
全球每年约800万人死于烟草相关疾患，吸烟是肺癌、慢阻肺、冠心病和卒中的共同首要危险因素，二手烟还危害不吸烟者。GBD研究显示烟草导致的伤残调整寿命年（DALY）在所有危险因素中名列前茅。正因为其危害广、可明确预防，控烟被公认为性价比最高的公共卫生干预之一。
About 8 million people die each year from tobacco-related disease; smoking is the top shared risk for lung cancer, COPD, coronary disease and stroke, and secondhand smoke harms non-smokers. The GBD study ranks tobacco among the leading causes of disability-adjusted life years. Because the harm is vast yet clearly preventable, tobacco control is among the most cost-effective public-health actions.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#烟草 #可预防死因 #二手烟 #GBD
疫苗覆盖率的阈值如何计算？
How is the vaccine coverage threshold calculated?
群体免疫阈值近似为 1 减 1 除以 R0，R0越高所需覆盖率越高。该简化公式未考虑人口混合不均和疫苗效力。实际规划需结合本地流行病学数据。
The herd immunity threshold is roughly 1 minus 1 over R0; higher R0 needs higher coverage. This simplified formula ignores uneven mixing and vaccine efficacy. Real planning uses local epidemiological data.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：作者 / 书名 / 版次 / 出版社 / 年份齐备，仅缺独立比对证据；已在可信度报告单列披露，不再重复核验。
Fine 等,《Community Immunity》,收录于 Vaccines 第6版,Elsevier,2013
P. E. M. Fine et al., Community Immunity, in Vaccines, 6th ed., Elsevier, 2013
#覆盖率阈值 #R0 #群体免疫
基本传染数R0代表什么？
What does the basic reproduction number R0 represent?
R0 表示一个感染者在无免疫、无干预人群中平均传染的人数。R0大于1时疫情会扩散，小于1则趋于消亡。它是评估防控强度的关键参数，但会受行为和环境影响。
R0 is the average number one infected person transmits to a fully susceptible, unintervened population. Above 1 the outbreak grows, below 1 it fades. It is key to sizing control, yet varies with behavior and environment.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
Heesterbeek 等《基本传染数 R0：一个工具箱》（Journal of the Royal Society Interface, 2002）
Heesterbeek et al., R0: a toolbox (Journal of the Royal Society Interface, 2002)
#R0 #传染数 #流行病学
什么是耐多药结核（MDR-TB）？
What is multidrug-resistant tuberculosis (MDR-TB)?
MDR-TB指结核菌同时对最有效的两种一线药物——异烟肼和利福平耐药，主要由治疗不规范（擅自停药、单药暴露）或直接感染耐药株造成。治疗需改用二线药物、疗程长达18个月以上，副作用更多、治愈率更低、费用更高。规范完成全程督导治疗是预防耐药的关键，而耐药菌株的传播会进一步加重负担。
MDR-TB means the bacteria are resistant to both isoniazid and rifampicin—the two most effective first-line drugs—arising mainly from irregular treatment (stopping early, single-drug exposure) or infection with a resistant strain. Treatment requires second-line drugs for 18 months or more, with more side effects, lower cure rates, and higher costs. Completing the full supervised course is the key to preventing resistance, while transmission of resistant strains worsens the burden further.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#耐多药结核 #耐药 #全程治疗
什么是One Health一体化健康理念？
What is the One Health approach?
One Health 强调人类、动物与环境的健康相互关联，许多新发传染病来自动物溢出。防控需跨兽医、生态和公共卫生协作。它是应对人畜共患病和耐药性的框架。
One Health sees human, animal, and environmental health as linked; many emerging infections spill over from animals. Control needs veterinary, ecological, and public health collaboration. It frames zoonoses and resistance response.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
《One Health approach to exploring what drives zoonoses》,Veterinary Record,2015 (DOI: 10.1136/vr.g7786)
'One Health approach to exploring what drives zoonoses', Veterinary Record, 2015, DOI: 10.1136/vr.g7786
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.1136/vr.g7786
#One Health #人畜共患病 #协作
抗生素滥用会带来什么后果？
What are the consequences of antibiotic overuse?
抗生素滥用会杀死有益菌、促使细菌产生耐药性，甚至催生"超级细菌"，使常见感染将来无药可治。
Overusing antibiotics kills helpful bacteria and drives resistance, even creating "superbugs" that make common infections untreatable.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#抗生素 #滥用
室内通风为什么对健康重要？
Why does indoor ventilation matter for health?
通风能稀释空气中的病原体和二氧化碳，降低传染与困倦。有人生病时更要多开窗或用空气净化，注意滤网维护。
Ventilation dilutes airborne pathogens and CO2, cutting infection risk and drowsiness. Open windows or use purifiers—especially when someone is ill—and maintain filters.
难度 专业 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#通风 #空气
抗生素滥用如何催生超级细菌？
How does antibiotic misuse create superbugs?
滥用抗生素杀死敏感菌而留下耐药突变株，后者在筛选压力下繁殖扩散，最终形成对多种药物无效的“超级细菌”。
Misusing antibiotics kills susceptible bacteria but leaves resistant mutants that multiply under selection pressure, eventually forming superbugs resistant to many drugs.
难度 专业 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#超级细菌 #耐药性
为什么有些疫苗要打加强针？
Why do some vaccines require booster doses?
初次接种后机体形成记忆B细胞和记忆T细胞，但灭活类疫苗诱生的抗体滴度会随时间衰减。加强针相当于一次“模拟再感染”，再次激活记忆细胞，使抗体在短期内快速回升，并推动生发中心反应实现亲和力成熟，同时扩增长寿命骨髓浆细胞，把保护期明显拉长。这正是“免疫记忆”的临床运用——与人体再次接触病原体时的反应原理相同。
Initial vaccination generates memory B and T cells, but antibody titers from inactivated-type vaccines wane over time. A booster is like a simulated re-exposure: it re-activates memory cells, quickly raising antibody levels, drives germinal-center reactions for affinity maturation, and expands long-lived bone-marrow plasma cells to greatly extend protection. This is the clinical application of immunological memory—the same principle as the body's response to a real pathogen re-encounter.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#加强针 #免疫记忆 #亲和力成熟
为什么第二次感染登革热可能更危险？
Why can a second dengue infection be more dangerous?
登革病毒有4种血清型。首次感染产生的抗体对同型有中和作用，但针对其它型别的亚中和水平抗体反而会引发“抗体依赖性增强”（ADE）：抗体-病毒复合物更容易被巨噬细胞等通过Fc受体摄取，让病毒在这些细胞里大量复制，引发更剧烈的免疫反应，从而增加重症登革热（登革出血热/休克综合征）风险。这也是登革疫苗必须同时诱导4型均衡保护的原因。
Dengue virus has four serotypes. Antibodies from a first infection neutralize the same serotype, but sub-neutralizing antibodies against other serotypes can cause antibody-dependent enhancement (ADE): antibody-virus complexes are taken up more readily by macrophages via Fc receptors, allowing massive viral replication inside them and triggering a fiercer immune reaction—raising the risk of severe dengue (dengue hemorrhagic fever/shock syndrome). This is why dengue vaccines must induce balanced protection against all four serotypes.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#登革热 #抗体依赖增强 #血清型
一支疫苗从研发到上市要走哪些流程？
What steps does a vaccine go through from research to market?
疫苗研发一般先做临床前研究——用细胞和动物实验验证安全性与免疫原性，再依次进入I期（小样本安全与剂量）、II期（免疫应答与剂量范围）、III期（大样本有效性、安全性）临床试验。随后数据提交监管机构审评审批，获批上市后还持续进行IV期监测，长期跟踪罕见不良反应。紧急使用授权会加快流程，但仍要求现有证据显示获益大于风险。
Vaccine development begins with preclinical research — cell and animal studies of safety and immunogenicity — followed by clinical trials in phases: I (small groups, safety and dosing), II (immune response and dose range), and III (large trials of efficacy and safety). The data are then submitted for regulatory review and approval, and after market authorization continuous phase IV surveillance tracks rare adverse events long-term. Emergency use authorization accelerates the process but still requires the available evidence to show benefits outweigh risks.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#临床试验 #三期试验 #监管审批
空气污染（PM2.5）主要伤害哪里？
What does air pollution (PM2.5) mainly harm?
细颗粒物可深达肺部甚至入血，长期暴露关联肺病、心脏病和认知下降。重污染天戴N95、用室内空气净化、减少户外剧烈运动。
Fine particles reach deep into lungs and even blood; long-term exposure links to lung and heart disease and cognitive decline. On bad days wear N95, use indoor filtration and limit outdoor exertion.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
世界卫生组织《全球空气质量准则》（WHO Global Air Quality Guidelines, 日内瓦, 2021, 含PM2.5健康效应章节）
World Health Organization. WHO Global Air Quality Guidelines: Particulate Matter (PM2.5 and PM10), Ozone, Nitrogen Dioxide and Sulfur Dioxide. Geneva: WHO, 2021
#空气污染 #PM2.5
什么是抗生素的“One Health（同一健康）”策略？
What is the 'One Health' approach to antibiotics?
“同一健康”强调人、动物和环境的健康紧密相连，抗微生物耐药可在它们之间传播。因此需要在医疗、养殖和环境管理中协同控制抗生素使用。
One Health emphasizes that human, animal, and environmental health are closely linked, and antimicrobial resistance can spread among them. It calls for coordinated control of antibiotic use across medicine, farming, and the environment.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
Iriti, Vitalini, Varoni,《Humans, Animals, Food and Environment: One Health Approach against Global Antimicrobial Resistance》,Antibiotics,2020 (DOI: 10.3390/antibiotics9060346)
Iriti, Vitalini, Varoni, 'Humans, Animals, Food and Environment: One Health Approach against Global Antimicrobial Resistance', Antibiotics, 2020, DOI: 10.3390/antibiotics9060346
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.3390/antibiotics9060346
#同一健康 #耐药性 #公共
抗生素管理计划包含哪些内容？
What does an antibiotic stewardship program include?
管理计划通过处方审核、用药教育和耐药监测，促进抗生素合理使用。目标是减少不必要的广谱药物和疗程过长。医院和社区层面均可实施。
Stewardship promotes rational antibiotic use via prescription review, education, and resistance monitoring. The goal is fewer unnecessary broad-spectrum drugs and overlong courses. It works at hospital and community levels.
难度 专业 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-10-04
来源 · Source
Bennett JE主编专著《Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases》第9版,Elsevier
Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases, 9th edition, edited by John E. Bennett, Elsevier
独立核验依据 · Independent verification: 核验依据 1 ISBN 9780323482554 (2019)
#抗生素管理 #耐药 #处方
什么是“健康的社会决定因素”？
What are social determinants of health?
收入、教育、居住环境与空气质量等社会条件深刻影响健康结局，往往比医疗本身更决定人群寿命差异。
Income, education, housing, and air quality strongly shape health outcomes, often explaining population life-expectancy gaps more than care itself.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#社会决定因素 #健康公平
人们常说的"健康生活方式"具体指什么？
What exactly counts as a "healthy lifestyle"?
大体包含五方面：食物多样、蔬果充足而限制糖盐油；每周至少150分钟中等强度运动；保证规律充足睡眠；不吸烟、限制饮酒；学会管理压力并定期体检。坚持这些习惯比任何单一"保健品"都更能维护健康。
It generally comes down to five pillars: a varied diet rich in vegetables and fruit with limited sugar, salt, and fat; at least 150 minutes of moderate activity each week; regular, sufficient sleep; no smoking and limited alcohol; and managing stress with routine checkups. These habits do more for health than any single supplement.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#健康生活方式 #均衡饮食 #规律运动
蚊子咬后为什么又痒又起包？怎样防蚊更有效？
Why do mosquito bites itch and swell, and what repels mosquitoes best?
蚊子吸血时会注入含抗凝物质的唾液，免疫系统把它当异物处理、释放组胺，导致红肿和瘙痒。有效的防蚊手段包括使用含避蚊胺或派卡瑞丁的驱蚊剂、穿长袖长裤、装纱窗蚊帐，以及清除居家附近的积水——那是蚊子繁殖的地方。
When a mosquito feeds, it injects saliva with anticoagulants; the immune system treats it as foreign and releases histamine, causing redness, swelling, and itching. Effective protection includes repellents with DEET or picaridin, long sleeves and pants, screens and bed nets, and removing standing water around the home — where mosquitoes breed.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#蚊虫叮咬 #组胺 #避蚊胺
认真洗手真的能防病吗？
Does proper handwashing really prevent disease?
能。呼吸道和肠道病原体常通过手传播，肥皂加流水搓洗20秒可以机械性冲走并破坏细菌和包膜病毒（如流感病毒）。上厕所后、做饭前、咳嗽后、外出回家后都是关键洗手时机；没有水和肥皂时，含酒精60%以上的免洗洗手液是替代方案。
Yes. Many respiratory and gut pathogens spread by hand; scrubbing with soap and running water for 20 seconds physically removes and inactivates bacteria and enveloped viruses like influenza. Key moments include after using the toilet, before cooking, after coughing, and after coming home; when soap and water are unavailable, an alcohol-based sanitizer (at least 60% alcohol) is an alternative.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#洗手 #手卫生 #免洗洗手液
为什么生熟食物要分开处理？
Why should raw and cooked food be kept separate?
生肉、生蛋可能携带沙门氏菌、大肠杆菌等病原体，如果切生食的刀和案板再去碰熟食，细菌就会"搭车"污染熟食。WHO的"食品安全五要点"包括保持清洁、生熟分开、彻底煮熟、安全温度、安全原料。
Raw meat and eggs can carry pathogens such as Salmonella and E. coli. If the same knife or cutting board touches cooked food afterward, the bacteria hitch a ride and contaminate it. WHO's "Five Keys to Safer Food" include keep clean, separate raw and cooked, cook thoroughly, keep at safe temperatures, and use safe water and raw materials.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#食品安全 #交叉污染 #沙门氏菌
什么是健康素养？
What is health literacy?
健康素养指获取、理解和运用健康信息以做决策的能力。素养高的人更易遵从医嘱、识别误区。提升素养是改善全民健康的基础。
Health literacy is the ability to obtain, understand, and use health information for decisions. Higher literacy links to better adherence and myth recognition. Improving it underpins population health.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
Rothschild,《Health Literacy: What the Issue Is, What Is Happening, and What Can Be Done》,Health Promotion Practice,2005 (DOI: 10.1177/1524839904270387)
Rothschild, 'Health Literacy: What the Issue Is, What Is Happening, and What Can Be Done', Health Promotion Practice, 2005, DOI: 10.1177/1524839904270387
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.1177/1524839904270387
#健康素养 #信息 #决策
为什么随机对照试验被称为疗效证据的“金标准”？
Why is the randomized controlled trial considered the gold standard for treatment evidence?
随机化能让治疗组和对照组在已知和未知的因素上都大体均衡，双盲设计让医生和患者都不知道谁在用什么药，避免期望影响结果；安慰剂对照则排除“不吃药也会好”的自然恢复。这样才能比较有把握地把疗效差异归因于药物本身，因此新药上市前都必须经过严谨的随机对照试验。
Randomization balances treatment and control groups on both known and unknown factors; blinding keeps doctors and patients unaware of who gets what, avoiding expectations; and placebo controls rule out natural recovery. This makes it reasonably safe to attribute outcome differences to the drug itself, which is why rigorous RCTs are required before new medicines reach the market.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
Higgins JPT等.《Cochrane系统评价手册(干预)》第6版,Wiley,2019
Higgins JPT et al., Cochrane Handbook for Systematic Reviews of Interventions, 6th ed., Wiley, 2019
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL16973140W：Cochrane handbook for
#随机对照试验 #双盲 #安慰剂
为什么戒烟有益全家健康？
Why does quitting smoking help the whole family?
二手烟会增加家人患呼吸道疾病与心脏病风险，戒烟不仅保护自身，也降低周围人尤其儿童的健康危害。
Secondhand smoke raises family risks of respiratory and heart disease; quitting protects you and lowers harm to those around you, especially children.
难度 进阶 · 适合 小学高段(9-12)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
美国卫生总监报告《吸烟的健康后果》（2014）；WHO《烟草控制框架公约》（FCTC）
US Surgeon General: The Health Consequences of Smoking (2014); WHO Framework Convention on Tobacco Control (FCTC)
#戒烟 #二手烟
怎么预防蚊媒疾病（登革热、疟疾等）？
How to prevent mosquito-borne diseases?
清除积水杜绝孳生，装纱窗、用驱蚊剂（含DEET或派卡瑞丁）、穿长袖长裤；前往流行区可用蚊帐并提前咨询防疫。
Remove standing water, use screens, repellent (DEET or picaridin) and cover arms/legs; in endemic areas use bed nets and consult travel health advice beforehand.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#蚊媒 #预防
为什么乙肝疫苗主要靠母婴阻断而不是靠治疗来消灭乙肝？
Why does hepatitis B control rely on birth-dose vaccination and mother-to-child blocking rather than treatment?
乙肝病毒主要通过母婴传播在新生儿期造成慢性感染，而围产期感染极易转为慢性并进展为肝硬化、肝癌。给新生儿在出生24小时内接种首针疫苗并联合乙肝免疫球蛋白，可切断这一主要传播链，成本远低于终身抗病毒。WHO因此把“出生即接种”作为消除乙肝的核心策略。
Hepatitis B spreads mainly from mother to newborn, and perinatal infection readily becomes chronic, progressing to cirrhosis and liver cancer. A birth-dose vaccine within 24 hours plus hepatitis B immunoglobulin cuts this main chain far more cheaply than lifelong antivirals. The WHO therefore makes “vaccinate at birth” the core of hepatitis B elimination.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#乙肝 #母婴阻断 #出生疫苗 #慢性感染
什么是抗生素耐药性？
What is antibiotic resistance?
当细菌进化出对抗生素的抵抗能力，常用药物可能失效，感染更难治疗。滥用和未完成疗程是主要推手。合理使用抗生素是全球公共卫生重点。
When bacteria evolve resistance, common drugs may fail and infections grow harder to treat. Misuse and unfinished courses are main drivers. Rational antibiotic use is a global public health priority.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#耐药性 #抗生素 #公共卫生
为什么接种疫苗能保护不接种的人？
How does vaccination protect unvaccinated people?
接种疫苗的人多了，社区中易感染的人就少，传播链条容易中断，从而也保护了因年龄或疾病不能接种的人。
With more people vaccinated, fewer are susceptible in a community, breaking transmission chains and protecting those who can't be vaccinated.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#疫苗 #公共卫生
为什么"疫苗犹豫"被世界卫生组织列为全球健康威胁？
Why did WHO list "vaccine hesitancy" as a global health threat?
疫苗犹豫指该接种却延迟或拒绝，往往源于对安全性的误解和错误信息传播。接种率下降会削弱群体免疫，让麻疹等本可预防的传染病卷土重来。多数担忧可以通过耐心、透明的沟通来化解。
Vaccine hesitancy is delaying or refusing vaccination despite availability, often fueled by misconceptions and misinformation. Falling coverage weakens herd immunity, allowing preventable diseases like measles to return. Most concerns can be resolved with patient, transparent communication.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#疫苗犹豫 #群体免疫 #疫苗安全
为什么用HPV检测做宫颈癌筛查比传统巴氏涂片更敏感？
Why is HPV testing more sensitive than the Pap smear for cervical cancer screening?
宫颈癌绝大多数由高危型人乳头瘤病毒（HPV）持续感染引起，直接检测病毒核酸能在癌前病变阶段就发现风险，灵敏度高于靠镜下看细胞形态的巴氏涂片。WHO 2021年指南推荐以HPV检测作为首选筛查方法，阳性者再进一步分流。这能更早、更稳定地识别需要随访的高危女性。
Almost all cervical cancers follow persistent high-risk human papillomavirus infection, so testing viral DNA detects risk at the precancer stage and is more sensitive than reading cell shapes under a microscope. The WHO 2021 guideline recommends HPV testing as the primary screen, with positive results triaged further. This finds high-risk women earlier and more reliably.
难度 进阶 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#HPV检测 #巴氏涂片 #宫颈癌筛查 #癌前病变
什么是“群体免疫”？
What is 'herd immunity'?
当足够多的人对某种传染病具有免疫力时，病毒就难以在人群中传播，从而间接保护无法接种的弱者。这通常需要较高比例的免疫人群。
When enough people are immune to an infectious disease, the virus cannot spread easily and indirectly protects those who cannot be vaccinated. This usually requires a fairly high proportion of immune individuals.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#群体免疫 #疫苗 #公共
开窗通风为什么重要？
Why is opening windows for ventilation important?
通风能稀释室内病原体和二氧化碳，降低呼吸道传染病传播概率。在密闭空调房尤其要注意定时换气。每天数次、每次十几分钟即可见效。
Ventilation dilutes indoor pathogens and carbon dioxide, lowering respiratory transmission. In sealed air-conditioned rooms, regular air exchange matters. A few times daily for ten-plus minutes helps.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#通风 #室内 #防病
旅行前要做哪些健康准备？
What health prep before traveling?
提前查目的地疫苗与疟疾预防，备好常用药和旅行保险，途中注意手卫生与饮水安全。前往特殊地区可咨询旅行门诊。
Check destination vaccines and malaria prevention, pack essentials and travel insurance, and keep hand hygiene and safe water en route. A travel clinic can advise for special regions.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#旅行 #预防
抑郁症是一种病吗？有哪些表现？
Is depression a real illness and what are its signs?
抑郁症是一种常见精神疾病，不只是「心情不好」。核心表现包括持续两周以上的情绪低落、兴趣减退、精力下降，可伴睡眠食欲改变和自责。中重度需专业治疗，越早干预越好。
Depression is a common mental illness, not just "feeling down." Core signs include low mood, loss of interest, and reduced energy lasting over two weeks, often with sleep/appetite changes and guilt. Moderate-to-severe cases need professional treatment; earlier help works better.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#抑郁症 #心理健康 #精神
为什么要用干净的水？
Why is clean water important?
干净的水不含致病微生物和有害化学物，饮用污染的水会引起腹泻、霍乱等传染病，所以安全饮水很重要。
Clean water lacks disease-causing microbes and harmful chemicals; drinking contaminated water causes diarrhea, cholera, and other infections, so safe water matters.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#饮水 #卫生
为什么加热不燃烧烟草制品仍然含有致癌物和尼古丁？
Why do heated tobacco products still contain carcinogens and nicotine?
加热不燃烧装置虽不点燃烟叶，但把烟草加热到约350°C仍会使烟草中的化学物质释放，其中仍含甲醛、丙烯醛、苯并[a]芘等多环芳烃和尼古丁。WHO指出这类产品并非无害，会产生有毒排放物并维持尼古丁依赖，不应被视为安全替代品。各国对其广告和青少年销售均有严格管控。
Heated tobacco devices do not burn leaf but heat it to about 350°C, still releasing tobacco chemicals including formaldehyde, acrolein, benzo[a]pyrene and nicotine. The WHO states these products are not harmless, emit toxic aerosols and sustain nicotine dependence, and should not be seen as safe alternatives. Many countries tightly regulate their marketing and youth sales.
难度 进阶 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
美国卫生总监报告《吸烟的健康后果》（2014）；WHO《烟草控制框架公约》（FCTC）
US Surgeon General: The Health Consequences of Smoking (2014); WHO Framework Convention on Tobacco Control (FCTC)
#加热不燃烧 #尼古丁 #致癌物 #烟草控制
如何评价一种疫苗在现实世界的保护效果？
How is a vaccine's real-world effectiveness evaluated?
临床试验测得的是疫苗“效力”（efficacy），而在真实人群中的表现称为“效果”（effectiveness），两者并不完全一样。研究者比较接种与未接种人群的发病率来计算保护效力，同时要处理“健康使用者偏倚”等混杂。检测阴性设计等专门方法可以更准确地估算疫苗在现实中的保护程度。
Clinical trials measure vaccine efficacy under controlled conditions, while its performance in real populations is called effectiveness, and the two are not identical. Researchers compare disease rates in vaccinated versus unvaccinated people to estimate protective effectiveness while handling confounding such as healthy-user bias. Designs like the test-negative design allow more accurate estimation of real-world protection.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
Plotkin、Orenstein 与 Offit《疫苗学》（Vaccines，第7版）
Plotkin, Orenstein & Offit, Vaccines (7th edition)
#疫苗效果 #效力 #检测阴性设计
为什么流感疫苗几乎每年都需要接种？
Why do we need an influenza vaccine nearly every year?
流感病毒变异很快，表面的血凝素和神经氨酸酶不断“漂移”，去年疫苗针对的毒株未必匹配今年的流行株。世界卫生组织每年根据全球监测数据提前预测下一流行季毒株并更新疫苗成分。因此每年接种当季疫苗，才能获得与流行株匹配的保护。
Influenza viruses mutate quickly: surface hemagglutinin and neuraminidase constantly drift, so last year's vaccine strains may not match this year's circulating viruses. Every year WHO predicts the next season's strains from global surveillance and updates the vaccine composition. Getting the seasonal vaccine each year is what keeps protection matched to the circulating strains.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#流感疫苗 #抗原漂移 #年度接种
为什么“相关不等于因果”？
Why doesn't correlation imply causation?
两个现象同时出现，可能是因为共同的第三因素（混杂）、可能结局先于暴露（反向因果），也可能只是巧合。判断因果关系需要排除混杂、确认时间先后，并有合理的生物学机制支撑。随机对照试验通过随机化消除混杂；观察性研究则借助多因素回归、倾向评分甚至孟德尔随机化等方法尽量逼近因果结论。
Two phenomena occurring together may share a common third factor (confounding), the "outcome" may have preceded the "exposure" (reverse causation), or it may be pure chance. Establishing causation requires ruling out confounding, confirming the correct time order, and supporting biological plausibility. RCTs remove confounding by randomization; observational studies approach causal conclusions with multivariable regression, propensity scores, or even Mendelian randomization.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
The Lancet（因果推断方法）
The Lancet (causal inference methods)
#因果推断 #混杂因素 #相关性
疫苗覆盖率低会带来什么风险？
What are the risks of low vaccine coverage?
覆盖率不足会削弱群体免疫，使麻疹等高度传染病因个别病例引发暴发，威胁无法接种的婴幼儿与免疫低下者。
Low coverage weakens herd immunity, letting highly contagious diseases like measles flare from single cases and endanger unvaccinated infants and the immunocompromised.
难度 进阶 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
世界卫生组织（WHO）《免疫覆盖率》
World Health Organization (WHO): Immunization coverage
#疫苗覆盖率 #暴发
洗手为什么能预防疾病传播？
Why does handwashing prevent disease spread?
肥皂与流水可物理去除并破坏手部油脂中的病菌，切断“手—口—脸”的传播链，是最经济的防病手段。
Soap and running water physically remove and break down germs in hand oils, cutting the hand-to-mouth-face route—the cheapest disease prevention.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#洗手 #预防
慢性病为何称为沉默的杀手？
Why are chronic diseases called silent killers?
高血压、糖尿病等慢性病早期常无症状，却在悄悄损害心脑肾等器官。定期体检和筛查是及早发现的关键。控制危险因素可显著延迟并发症。
Hypertension and diabetes are often symptomless early yet quietly damage heart, brain, and kidneys. Regular checkups and screening catch them early. Controlling risk factors delays complications substantially.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#慢性病 #筛查 #无症状
为什么疫苗覆盖率高能保护没打疫苗的人？
Why does high vaccine coverage protect people who are not vaccinated?
每个传染病都有"一个感染者平均能传给几个人"的传播力。当人群中通过疫苗或感染获得免疫的比例足够高时，病原体找不到足够的易感者，传播链条就会中断，没打疫苗的人也就被"隔空"保护了。这尤其重要，因为婴幼儿、老人和免疫缺陷者往往无法接种疫苗。
Every infectious disease has a transmission power — how many people one case typically infects. When enough people in a population are immune through vaccination or past infection, the pathogen cannot find enough susceptible hosts, transmission chains break, and even unvaccinated people are protected. This matters especially because infants, the elderly, and immunocompromised individuals often cannot be vaccinated.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#群体免疫 #基本再生数 #疫苗接种率
二手烟为什么有害？
Why is secondhand smoke harmful?
二手烟是他人吸烟时释放的烟雾，含有多种有毒物质。不吸烟者吸入后同样会增加肺部疾病和心脏病的风险。
Secondhand smoke is the smoke released when others smoke and contains many toxic substances. Non-smokers who breathe it in also face higher risks of lung disease and heart problems.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#二手烟 #烟草 #公共
什么是无症状感染者？
What is an asymptomatic carrier?
无症状感染者感染了病原体却无明显症状，但仍可能传播疾病。这给传染病防控带来挑战，依赖检测和隔离发现。公众做好防护仍可降低风险。
An asymptomatic carrier is infected but shows no clear symptoms, yet can still spread disease. This challenges control and relies on testing and isolation. Public precautions still lower risk.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#无症状 #传染 #防控
队列研究和病例对照研究有什么区别？
What is the difference between cohort and case-control studies?
队列研究先按是否暴露分组，再随访若干年观察结局，能直接计算发病率或风险，证据等级较高，但耗时和费用都很高。病例对照研究从“已患病”的人出发，回忆他们过去的暴露情况，再与健康对照比较，快速经济，但容易受回忆偏倚影响。两者都属于观察性研究，解读时都要小心混杂因素。
A cohort study groups people by exposure and follows them over time to observe outcomes, so it can directly estimate incidence and risk with higher evidentiary strength—but it is slow and expensive. A case-control study starts with people who already have the disease and looks back at their past exposures, comparing them with healthy controls; it is fast and cheap but prone to recall bias. Both are observational and must be interpreted with confounding in mind.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
The Lancet（流行病学研究设计）
The Lancet (epidemiological study designs)
#队列研究 #病例对照 #偏倚
什么是“全民健康覆盖”？
What is universal health coverage?
全民健康覆盖指所有人都能获得所需要的、质量合格的卫生服务，而不会因支付费用而陷入经济困难。它包含两个维度：服务覆盖（预防、治疗、康复、姑息照护）和财务保护（通过税收或社会保险等预付与风险分担机制，减少自付比例）。它是联合国可持续发展目标3.8的内容，世界卫生组织认为以强有力的基层卫生服务为基础是实现它最具成本效益的路径。
Universal health coverage means everyone can obtain the quality health services they need without suffering financial hardship in paying for them. It has two dimensions: service coverage - prevention, treatment, rehabilitation and palliative care - and financial protection, achieved through prepayment and risk-pooling mechanisms such as taxation or social insurance that shrink out-of-pocket spending. It forms Sustainable Development Goal target 3.8, and WHO regards strong primary health care as the most cost-effective route to achieving it.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#全民健康覆盖 #财务保护 #基层卫生 #可持续发展目标
结核病是如何传播和治疗的？
How is tuberculosis transmitted and treated?
结核病由结核分枝杆菌引起，主要经活动性肺结核患者咳嗽、打喷嚏时的飞沫传播，侵犯肺部为主。多数感染者免疫系统能把细菌控制为潜伏感染，一生中约5%-10%会发展为活动性结核。活动性结核需要规范联合用药至少6个月；不规律服药是产生耐药的主要原因。
Tuberculosis is caused by Mycobacterium tuberculosis and spreads mainly by droplets from coughing or sneezing people with active pulmonary TB, affecting the lungs most often. In most infected people the immune system holds the bacteria in a latent state; about 5–10% develop active disease in their lifetime. Active TB requires a standard combination regimen for at least six months; irregular treatment is the main cause of drug resistance.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#结核病 #飞沫传播 #规范治疗
疫苗接种率为什么影响全社会？
Why does vaccination rate affect society as a whole?
接种率越高，病原体越难找到易感者，从而保护婴儿、老人和免疫缺陷等无法接种的人群。覆盖率下降易引发暴发。这是典型的公共产品。
Higher coverage leaves fewer susceptible hosts, protecting infants, elders, and the immunocompromised who cannot be vaccinated. Falling coverage invites outbreaks. It is a classic public good.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#接种率 #群体保护 #公共产品
筛查试验的灵敏度和特异度代表什么？
What do sensitivity and specificity of a screening test mean?
灵敏度指真正患病的人中被正确检出的比例，越高越不容易漏诊；特异度指真正没病的人中被正确排除的比例，越高越不容易误报。两者往往此消彼长，提高一个就会降低另一个，所以要根据筛查目的权衡：想避免漏诊重症就偏向高灵敏度，想减少假阳性焦虑就偏向高特异度。
Sensitivity is the proportion of truly diseased people correctly detected—higher means fewer missed cases. Specificity is the proportion of truly healthy people correctly ruled out—higher means fewer false alarms. The two usually trade off against each other, so the balance depends on the goal: to avoid missing serious disease you favor sensitivity; to reduce anxiety from false positives you favor specificity.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#灵敏度 #特异度 #筛查
什么是医院感染？怎么预防？
What is a healthcare-associated infection, and how is it prevented?
医院感染指患者在住院期间新获得的感染，常见的有尿路感染、手术切口感染、呼吸机相关肺炎和血流感染。医疗操作侵入性越强、住院越久，风险越高。手卫生是最基本也最有效的预防措施，配合器械规范消毒、抗菌药物合理使用和感染监测，能显著降低发生率。
Healthcare-associated infections are infections acquired during a hospital stay, commonly urinary tract, surgical site, ventilator-associated pneumonia, and bloodstream infections. The more invasive the procedures and the longer the stay, the higher the risk. Hand hygiene is the single most basic and effective measure, along with proper instrument sterilization, prudent antibiotic use, and infection surveillance.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#医院感染 #手卫生 #医疗安全
登革热是怎么传播的？主要表现是什么？
How is dengue spread, and what are its main features?
登革热由登革病毒经伊蚊（主要是埃及伊蚊和白纹伊蚊）叮咬传播，潜伏数天后突发高热，伴剧烈头痛、眼眶痛、肌肉关节痛和皮疹。多数患者一周左右自愈，但少数可能进展为重症（重症登革热），出现出血和休克征象，需要及时就医。防蚊灭蚊是最重要的预防措施。
Dengue is caused by dengue virus and spread by Aedes mosquitoes, mainly Aedes aegypti and Aedes albopictus. After an incubation of a few days, patients develop sudden high fever with severe headache, pain behind the eyes, muscle and joint aches, and a rash. Most recover within about a week, but a minority progress to severe dengue with bleeding and shock signs that need urgent care. Mosquito control is the most important preventive measure.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#登革热 #伊蚊 #重症登革热
大部分慢性病真的可以预防吗？
Can most chronic diseases really be prevented?
心脏病、卒中、2型糖尿病和相当一部分癌症，主要危险因素是吸烟、不健康饮食、缺乏运动和过量饮酒，这些都是可以改变的。戒烟、平衡膳食、每周规律运动、控制体重和定期筛查，能在很大程度上降低发病风险。
Heart disease, stroke, type 2 diabetes, and a substantial share of cancers are driven by modifiable risk factors — smoking, unhealthy diet, physical inactivity, and harmful alcohol use. Quitting smoking, eating a balanced diet, exercising regularly, maintaining a healthy weight, and getting screened can substantially reduce the risk.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#慢性病 #危险因素 #一级预防
电子烟比传统香烟“安全”吗？
Are e-cigarettes safer than conventional cigarettes?
电子烟不燃烧烟草，因此某些燃烧产物较少，但绝不等于无害。其气雾中含有尼古丁（高度成瘾，并可损害青少年大脑发育）、超细颗粒物、羰基化合物和金属等有害成分，长期健康影响尚在观察中。一些证据提示在专业支持下电子烟可能帮助部分成年吸烟者戒烟，但世界卫生组织强调它对青少年和不吸烟者具有明显危害，主张严格监管、禁止面向青少年营销。从不吸烟的人不应以“更安全”为理由开始使用。
E-cigarettes do not burn tobacco, so some combustion products are reduced - but that is far from harmless. Their aerosol contains nicotine, which is highly addictive and can harm adolescent brain development, along with ultrafine particles, carbonyl compounds and metals, and long-term health effects are still being studied. Some evidence suggests they may help certain adult smokers quit when combined with professional support, yet WHO emphasizes their clear harms to young people and non-smokers and calls for strict regulation and bans on youth-oriented marketing. People who have never smoked should not start on the grounds that vaping is safer.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
美国国家科学院（NASEM）电子烟健康影响报告, 2018
National Academies (NASEM). 'Public Health Consequences of E-Cigarettes' (2018).
独立核验依据 · Independent verification: 核验依据 1 CROSSREF 标识 10.17226/24952：Public Health Consequences of
#电子烟 #尼古丁 #青少年健康 #烟草控制
室内用柴火或煤做饭为什么危害健康？
Why is cooking indoors with wood or coal harmful to health?
固体燃料和煤油在通风不良的室内不完全燃烧，会产生高浓度PM2.5、一氧化碳和多环芳烃，其颗粒物浓度可远超室外空气污染标准。世界卫生组织估计家庭空气污染每年造成约320万人死亡，主要疾病包括儿童肺炎、慢性阻塞性肺疾病、肺癌、缺血性心脏病和中风，妇女和儿童因在灶边时间长而受害最深。改用液化气、电或生物质炉具等清洁燃料并改善排烟通风，是最直接有效的干预。
Solid fuels and kerosene burning incompletely in poorly ventilated rooms generate high concentrations of PM2.5, carbon monoxide and polycyclic aromatic hydrocarbons, with particle levels far above outdoor air quality limits. WHO estimates household air pollution causes about 3.2 million deaths a year, chiefly through childhood pneumonia, chronic obstructive pulmonary disease, lung cancer, ischaemic heart disease and stroke, with women and children hit hardest because they spend most time near the stove. Switching to clean fuels such as LPG or electricity, or to improved stoves, plus proper venting, is the most direct and effective intervention.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#家庭空气污染 #固体燃料 #PM2.5 #清洁炉灶
什么是被动免疫和主动免疫？
What are passive and active immunity?
主动免疫由机体自己产生抗体，如接种疫苗，维持久。被动免疫直接输入抗体，如破伤风抗毒素，起效快但短暂。两者在暴露后预防和疫情处置中各有用途。
Active immunity is made by the body itself, like after vaccination, and lasts long. Passive immunity infuses antibodies directly, like tetanus antitoxin, acting fast but briefly. Each has its role in post-exposure and outbreak control.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#主动免疫 #被动免疫 #抗体
吸烟为什么危害这么大？
Why is smoking so harmful?
烟草烟雾含数千种化学物，其中至少70种确定致癌。焦油直接损害呼吸道，一氧化碳抢走血红蛋白上的氧气，尼古丁则让人成瘾。吸烟显著增加肺癌、慢性阻塞性肺病和心血管病风险，二手烟同样伤及家人。
Tobacco smoke contains thousands of chemicals, at least 70 of which are proven carcinogens. Tar damages the airways, carbon monoxide steals oxygen from hemoglobin, and nicotine drives addiction. Smoking sharply raises the risk of lung cancer, COPD, and heart disease, and secondhand smoke harms family members too.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#吸烟 #致癌物 #二手烟
什么是流行病学？
What is epidemiology?
流行病学是研究疾病在人群中如何分布和传播的学科，通过统计和调查找出原因、评估风险并指导防控。
Epidemiology studies how diseases distribute and spread in populations, using statistics and investigation to find causes, assess risk, and guide prevention.
难度 进阶 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#流行病学 #统计
疟疾是怎样感染人体、如何诊断和治疗的？
How does malaria infect people, and how is it diagnosed and treated?
疟原虫经雌性按蚊叮咬进入血液，先在肝脏繁殖，再侵入红细胞反复扩增，引起周期性寒战、发热和出汗。诊断依靠血涂片镜检或快速诊断试纸。以青蒿素为基础的联合治疗（ACT）是当前标准方案；防蚊（蚊帐、驱蚊剂）是核心预防手段。
Malaria parasites enter the blood through the bite of female Anopheles mosquitoes, multiply first in the liver, then invade red blood cells in repeated cycles that cause periodic chills, fever, and sweating. Diagnosis relies on blood-smear microscopy or rapid tests. Artemisinin-based combination therapy (ACT) is the standard treatment; mosquito control—bed nets and repellents—is the key to prevention.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#疟疾 #疟原虫 #青蒿素
什么是哨点监测和症状监测？
What are sentinel and syndromic surveillance?
哨点监测通过选定的少数医疗机构持续收集数据，以低成本反映趋势。症状监测则汇总发热、购药等早期信号，争取在确诊前发现异常。两者互补提升预警能力。
Sentinel surveillance uses selected sites to collect data continuously, reflecting trends at low cost. Syndromic surveillance aggregates early signals like fever or drug sales to catch anomalies before diagnosis. They complement each other for warning.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#哨点 #症状监测 #预警
一名接触85 dB(A)稳态噪声8年的工人,纯音电测听显示3000、4000、6000 Hz听阈显著抬高而500~2000 Hz基本正常,能否据此排除职业性噪声聋?确诊后的处理原则有哪些?
A worker with 8 years of exposure to steady noise at 85 dB(A) shows markedly elevated thresholds at 3000, 4000 and 6000 Hz while speech frequencies remain essentially normal. Can occupational noise-induced deafness be excluded on this basis, and what are the management principles once confirmed?
噪声性听力损失的听力学特征是高频段先受损,早期语频可以保持正常,因此语频正常不能排除噪声聋,应按诊断标准对经年龄性别修正的双耳高频平均听阈进行综合评定。确诊后应立即调离噪声作业环境,听力下降明显者可验配助听装置并坚持定期复查听力。用人单位还须依照职业健康监护技术规范安排在岗期间及离岗后的随访。
Noise-induced hearing loss strikes the high frequencies first and speech frequencies may stay normal early on, so normal speech thresholds do not rule it out; assessment follows the diagnostic standard using age- and sex-corrected binaural high-frequency averages. Once confirmed, the worker must be removed from noise exposure, fitted with hearing aids when loss is marked, and kept under regular audiometric review. Employers must also arrange in-service and post-exposure surveillance according to occupational health surveillance protocols.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
GBZ 49-2014《职业性噪声聋的诊断》,国家卫生和计划生育委员会发布
GBZ 49-2014, Diagnostic Criteria for Occupational Noise-induced Deafness, National Health and Family Planning Commission of the PRC
#职业卫生 #噪声聋评定与处置
工作场所噪声职业接触限值 85 dB(A) 是怎样规定的,企业应据此做哪些事?
How is the workplace noise occupational exposure limit of 85 dB(A) defined, and what obligations follow for employers?
我国 GBZ 2.2 规定,周40小时等效声级 85 dB(A) 为噪声职业接触限值,瞬时声级最高不得超过115 dB(A)。用人单位应定期开展噪声检测,为超标岗位配备护耳器,并组织上岗前与在岗期间的职业健康检查。8小时等效声级达到80 dB(A) 即构成噪声作业暴露,须纳入职业病危害告知和听力保护计划。
China's GBZ 2.2 sets the noise limit at an equivalent continuous sound level of 85 dB(A) averaged over a 40-hour working week, with instantaneous levels never exceeding 115 dB(A). Employers must measure noise periodically, provide hearing protectors for posts exceeding the limit, and arrange pre-placement and in-service occupational health examinations. An 8-hour equivalent level of 80 dB(A) or above already constitutes hazardous noise exposure requiring hazard disclosure and enrollment in a hearing conservation program.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
国家职业卫生标准 GBZ 2.2-2007《工作场所有害因素职业接触限值 第2部分:物理因素》
GBZ 2.2-2007, Occupational Exposure Limits for Hazardous Agents in the Workplace, Part 2: Physical Agents (China)
#噪声暴露 #职业接触限值
疫苗是怎样训练身体的士兵的?打一针为什么能防很多年?
How do vaccines train your body's soldiers? Why does one shot last years?
疫苗把病毒的无害「照片」交给免疫军队演习:先认脸,再造专门武器(抗体),并留下记忆细胞当哨兵。真病毒一来,哨兵立刻吹哨,武器工厂连夜开工,病毒没站稳就被消灭。记忆细胞能站岗多年,一针管很久;补种就是给哨兵开复习课。
Vaccines show immune soldiers a harmless photo of the germ. Soldiers learn its face, make special weapons (antibodies) and post memory-cell sentries. When the real virus arrives, sentries whistle, factories start overnight, and the germ is wiped out before it settles. Memory cells stand guard for years, so one shot lasts long; boosters are review classes.
难度 进阶 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
韩启德总主编《十万个为什么》(第六版),少年儿童出版社,2013
Han Qide chief ed., Ten Thousand Whys, 6th edition, Juvenile and Children Publishing House, 2013, 6th ed., Juvenile and Children Publishing House, 2013
独立核验依据 · Independent verification: 核验依据 1 ISBN 978-7-5324-9328-9 · 核验依据 2 ISBN 9787532493289
#疫苗 #免疫系统 #抗体
为什么食品要煮熟再吃？
Why should food be cooked before eating?
充分加热能杀死食物中的有害细菌和寄生虫，降低食物中毒的风险。生熟分开、彻底加热是安全饮食的重要原则。
Thorough heating kills harmful bacteria and parasites in food, lowering the risk of food poisoning. Keeping raw and cooked foods separate and cooking thoroughly are key food-safety principles.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#食品安全 #加热 #公共
成年人每周推荐多少运动量？
How much physical activity is recommended per week for adults?
世界卫生组织建议成年人每周至少 150 分钟中等强度有氧活动（如快走）或 75 分钟高强度活动，并结合肌肉力量训练。规律运动可降低心脑血管病、糖尿病和抑郁风险。
The WHO recommends adults at least 150 minutes of moderate-intensity aerobic activity (e.g., brisk walking) or 75 minutes of vigorous activity per week, plus muscle-strengthening. Regular exercise lowers risks of cardiovascular disease, diabetes, and depression.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
世界卫生组织（WHO）《身体活动与久坐行为指南》
World Health Organization (WHO) Guidelines on Physical Activity and Sedentary Behaviour
#运动 #健康 #公共卫生
为什么咳嗽或打喷嚏时要遮住口鼻？
Why should we cover our mouth and nose when coughing or sneezing?
咳嗽和打喷嚏会喷出许多看不见的微小液滴，可能携带病菌传染他人。用纸巾或手肘遮挡能保护周围的人。
Coughing and sneezing release many tiny invisible droplets that may carry germs and infect others. Covering with a tissue or your elbow protects the people around you.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#咳嗽礼仪 #卫生 #公共
带病上班或上学为什么不好？
Why not go to work or school while sick?
这会把感染传给别人，也让自己恢复更慢。发烧或明显传染期时，最好在家休息，保护自己也保护他人。
It spreads infection to others and slows your own recovery. With fever or a clearly contagious phase, rest at home—protecting yourself and everyone else.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#传染 #休息
为什么世界卫生组织建议成年人每天食盐摄入少于5克？
Why does the WHO advise adults to eat less than 5 g of salt per day?
高盐会升高血容量和血压，长期高钠摄入是高血压及随之而来的中风、心脏病的主要饮食因素。把每日盐降到5克以下，可在人群层面显著降低心脑血管事件。减盐不只靠少放盐，还要注意酱油、咸菜、加工食品中的“隐形盐”。
Excess salt raises blood volume and pressure, and long-term high sodium is a leading dietary driver of hypertension and the resulting stroke and heart disease. Keeping daily salt under 5 g cuts cardiovascular events across populations. Reducing salt means watching soy sauce, pickles and processed foods, not just the shaker.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#减盐 #高血压 #隐形盐 #中风
蚊虫叮咬会传播哪些病？
What diseases do mosquito bites transmit?
蚊子可传播登革热、疟疾、寨卡和乙型脑炎等。清除积水和防蚊叮咬是关键预防手段。前往流行地区前可咨询医生。
Mosquitoes can transmit dengue, malaria, Zika, and Japanese encephalitis. Removing standing water and avoiding bites are key preventions. Consult a doctor before traveling to affected areas.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#蚊媒 #传染病 #防蚊
为什么霉变的花生、玉米容易被黄曲霉毒素污染并与肝癌相关？
Why are mouldy peanuts and corn prone to aflatoxin and linked to liver cancer?
温暖潮湿下，寄生在花生、玉米上的黄曲霉会产生黄曲霉毒素B1，它是国际癌症研究机构列明的1类致癌物，主要经肝脏代谢并造成DNA损伤。长期低剂量摄入与肝细胞癌风险升高相关，尤其在乙肝高流行区叠加危害更大。因此发霉的坚果谷物应整批丢弃，不可只挑掉霉粒。
In warm damp conditions, Aspergillus on peanuts and corn makes aflatoxin B1, an IARC group 1 carcinogen that the liver metabolises into DNA-damaging forms. Long low-dose intake raises hepatocellular carcinoma risk, worse where hepatitis B is common. Throw out mouldy nuts and grain entirely—do not just pick off the bad bits.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#黄曲霉毒素 #肝癌 #1类致癌物 #霉变
食品安全五要点是什么？
What are the five keys to food safety?
世界卫生组织概括为：保持清洁、生熟分开、做熟煮透、安全存放、原料安全。这些做法能大幅降低食源性疾病风险。
The WHO summarizes them as: keep clean, separate raw and cooked, cook thoroughly, keep food at safe temperatures, and use safe raw materials. These steps greatly lower foodborne illness risk.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#食品安全 #食源性疾病 #卫生
什么是公共卫生？
What is public health?
公共卫生是通过接种疫苗、清洁饮水和健康教育等措施，保护整个社区人群健康的科学与实践。
Public health protects whole communities through vaccination, clean water, and education—the science and practice of population health.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
世界卫生组织（WHO）公共卫生定义；Winslow《公共卫生的未垦领域》（1920）
World Health Organization (WHO): Public health; Winslow, The untilled fields of public health (1920)
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL16078365W：The untilled fields of
#公共卫生 #社区
戴口罩在什么情况下最有效？
When is mask-wearing most effective?
在呼吸道传染病高发期、就医、乘坐密闭公共交通或照顾感染者时，科学戴口罩（贴合面部、遮住口鼻）可有效减少飞沫传播。口罩应一次性使用、不反复触碰污染面。
During peaks of respiratory infections, when seeing a doctor, on crowded public transport, or caring for an infected person, properly worn masks (covering nose and mouth, snug fit) effectively reduce droplet spread. Masks are single-use; avoid touching the contaminated surface.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#口罩 #呼吸道 #防护
什么是病原体？
What are pathogens?
病原体就是会让人得病的"坏微生物"，比如某些细菌、病毒、真菌和寄生虫。
Pathogens are harmful microbes that cause disease, such as certain bacteria, viruses, fungi, and parasites.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#病原体 #微生物
为什么霍乱主要依靠口服补液盐就能大幅降低死亡？
Why does oral rehydration therapy alone sharply cut cholera deaths?
霍乱的致命之处是剧烈腹泻呕吐导致的脱水和电解质紊乱，而不主要是细菌本身。口服补液盐按葡萄糖-钠比例设计，利用葡萄糖促进肠道吸收钠和水，能快速纠正脱水。及时口服补液可把霍乱病死率从超过30%降到低于1%，因此被视为最划算的急救措施。
Cholera kills mainly through dehydration and electrolyte loss from profuse diarrhea and vomiting, not the bacterium itself. Oral rehydration salts use the glucose–sodium co-transport so the gut absorbs sodium and water efficiently, correcting dehydration fast. Timely ORT drops cholera case-fatality from over 30% to under 1%, making it one of the most cost-effective treatments.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#霍乱 #口服补液盐 #脱水 #葡萄糖钠共转运
头盔和安全带为什么能救命？
Why do helmets and seat-belts save lives?
撞击时人体会突然减速，头部和内脏承受巨大冲击力。头盔的缓冲层让减速过程延长几毫秒并把力分散到更大面积，安全带则把身体固定在座椅上，避免撞向方向盘或飞出车外，同时利用最坚固的骨骼承担力量。世界卫生组织的数据显示，正确佩戴头盔可使摩托车驾驶人死亡风险降低约42%、头部受伤风险降低约69%，安全带使前排乘员死亡风险降低约45%～50%，儿童安全座椅可降低幼儿死亡60%以上。
In a crash the body decelerates abruptly and the head and internal organs take enormous force. A helmet's crushable liner stretches that deceleration by a few milliseconds and spreads the load over a wider area, while a seat-belt holds the body in the seat, stops it striking the steering wheel or being thrown out, and channels force through the strongest bones. WHO data show that wearing a helmet correctly cuts a motorcyclist's risk of death by about 42% and of head injury by about 69%, seat-belts reduce front-seat occupant deaths by roughly 45-50%, and child restraints cut deaths in young children by more than 60%.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#头盔 #安全带 #伤害预防 #道路安全
勤洗手为什么能防病？
Why does frequent hand washing prevent disease?
手会接触带病原体的物品表面，再触摸口鼻眼就可能感染。用肥皂和流动水洗手可清除多数病菌。饭前便后和外出回家洗手尤其重要。
Hands touch surfaces carrying pathogens, and touching the face can cause infection. Soap and running water remove most germs. Washing before eating, after the toilet, and after coming home is especially important.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#洗手 #手卫生 #传染病预防
为什么饭前要洗手？
Why wash hands before eating?
手会沾上看不见的细菌，吃饭前洗干净就不容易把病菌吃进肚子里。
Hands pick up invisible germs; washing before eating keeps them out of your tummy.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#洗手 #儿童
为什么高血压被称为『沉默的杀手』？
Why is hypertension called the silent killer?
高血压早期往往没有任何症状，却在长年累月中持续损伤心、脑、肾和眼底血管，悄悄增加心梗、卒中和肾衰竭的风险。很多患者直到出现并发症才被发现，因此定期测量血压是早期发现的关键。
Early hypertension usually has no symptoms, yet over years it silently damages the heart, brain, kidneys, and retinal vessels, raising the risk of heart attack, stroke, and kidney failure. Many people are diagnosed only after complications appear, so regular blood-pressure screening matters.
难度 入门 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
Whelton 等《2017 ACC/AHA 成人高血压预防、检测、评估与治疗指南》(Hypertension, 2018)；世界卫生组织(WHO)《高血压事实清单》
Whelton et al., '2017 ACC/AHA Guideline for high blood pressure' (Hypertension, 2018); World Health Organization, 'Hypertension' Fact Sheet
#高血压 #无症状 #靶器官损害 #筛查
打针的针头为什么用一次就要丢掉？
Why is an injection needle thrown away after a single use?
针头刺入皮肤后会接触血液，如果重复使用或多人共用，乙型肝炎病毒、丙型肝炎病毒和艾滋病病毒等可能随残留血液传给下一个人。针尖用过一次也会变钝、可能被污染，再用更疼也更容易感染。因此规范做法是一人一针一管，用后立刻放入专用利器盒统一处理，世界卫生组织还推广用后自动失效的注射器来防止重复使用。
A needle touches blood once it goes through the skin, so reusing it or sharing it between people can pass on hepatitis B, hepatitis C or HIV in the traces of blood left behind. A used tip is also blunter and may be contaminated, making a second use more painful and more likely to cause infection. The rule is therefore one needle and one syringe per person, dropped straight into a dedicated sharps box afterwards, and WHO promotes auto-disable syringes that cannot be used twice.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#注射安全 #一次性针头 #血源性传播 #利器盒
为什么要保持社交距离？
Why keep social distance?
生病的人咳嗽、打喷嚏会把小水滴喷到空中，离远一点能减少把病菌吸进身体的机会。
Sick people spray tiny droplets when they cough or sneeze; keeping distance lowers the chance you breathe in those germs.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#社交距离 #防疫
咳嗽打喷嚏时怎么遮挡？
How should you cover a cough or sneeze?
应用纸巾或手肘内侧遮挡口鼻，避免用手掌直接遮挡。之后尽快洗手，减少飞沫传播。这是防止呼吸道传染病扩散的基本礼仪。
Cover mouth and nose with a tissue or the inside of the elbow, not the bare hand. Wash hands soon after to limit droplet spread. This basic etiquette helps stop respiratory infections.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#呼吸道礼仪 #飞沫 #防病
什么是健康的生活方式？
What is a healthy lifestyle?
健康的生活方式通常包括均衡饮食、规律运动、充足睡眠和远离烟草酒精。它有助于预防多种慢性病并提升生活质量。
A healthy lifestyle generally includes a balanced diet, regular exercise, sufficient sleep, and avoiding tobacco and excessive alcohol. It helps prevent many chronic diseases and improves quality of life.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#生活方式 #预防 #公共
为什么饮用水要干净？
Why does drinking water need to be clean?
不干净的水可能带有病菌和寄生虫，会引起腹泻等疾病。喝经过净化或煮沸的水是保护健康的基本做法。
Unclean water can carry germs and parasites that cause diarrhea and other illnesses. Drinking purified or boiled water is a basic practice to protect health.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#饮水 #卫生 #公共
家庭食物怎么保存更安全？
How to store food safely at home?
冰箱保持低于5℃，食物彻底煮熟，生熟分开，剩菜充分加热；室温放置不超过2小时，夏天更短。
Keep the fridge below 5°C, cook thoroughly, separate raw and cooked, reheat fully, and don't leave food at room temperature over 2 hours (shorter in heat).
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#食品安全 #储存
戴口罩在什么场合有用？
When is wearing a mask useful?
在呼吸道传染病高发季、人群密集或通风差的场所，戴口罩能减少飞沫传播。生病时戴口罩可保护他人。口罩应贴合面部并及时更换。
During high seasons of respiratory illness, in crowded or poorly ventilated places, masks reduce droplet spread. Wearing one while sick protects others. Masks should fit the face and be changed when damp.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#口罩 #防护 #呼吸道
什么是群体免疫？
What is herd immunity?
当足够多的人接种疫苗获得免疫力，病毒就难以找到易感者传播，从而间接保护那些不能接种的人，这叫群体免疫。
When enough people are vaccinated, a virus can't easily find susceptible hosts to spread, indirectly protecting those who can't be vaccinated, this is herd immunity.
难度 入门 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#群体免疫 #疫苗
什么是 quarantine（隔离）？
What is quarantine?
隔离是把可能染病的人或动物分开，不让病菌传给别人，保护大家健康。
Quarantine separates possibly sick people or animals to stop germs from spreading to others and protect public health.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社
The Merck Manual Home Health Handbook, Chinese ed., PMPH
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787117181631（按标识回读: 默克家庭医学手册）
#隔离 #防疫
医生为什么要敲击你的膝盖?膝跳反射说明什么?
Why do doctors tap your knee? What does the reflex reveal?
膝盖下方韧带被叩击时,感受器瞬间上报脊髓,脊髓直接命令大腿肌肉踢腿——全程不经过大脑,所以你根本来不及阻止。这个反射弧检验神经系统通路是否完好:反射过弱或过强都提示特定问题。人体还有许多这样的自动化应急设计,让关键反应快到不需要思考。
Tapping the ligament sends sensors racing to the spinal cord, which orders the leg to kick without consulting your brain — too fast to stop. The reflex arc tests neural wiring: too weak or strong flags specific problems. Bodies run many such automatic emergency designs where speed beats deliberation.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
韩启德总主编《十万个为什么》(第六版),少年儿童出版社,2013
Han Qide chief ed., Ten Thousand Whys, 6th edition, Juvenile and Children Publishing House, 2013, 6th ed., Juvenile and Children Publishing House, 2013
独立核验依据 · Independent verification: 核验依据 1 ISBN 978-7-5324-9328-9 · 核验依据 2 ISBN 9787532493289
#膝跳反射 #反射弧 #神经系统检查