什么是脓毒症（败血症）？为何凶险？
What is sepsis and why is it dangerous?
脓毒症是机体对感染的失控反应，引发全身炎症、器官功能障碍。表现为高热或低体温、心率呼吸加快、精神萎靡，可迅速进展为休克和多器官衰竭，死亡率高，需紧急救治。
Sepsis is the body's life-threatening response to infection causing widespread inflammation and organ dysfunction. Signs include high or low temperature, fast heart and breathing rates, and confusion; it can rapidly progress to shock and organ failure with high mortality, needing emergency care.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
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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。
拯救脓毒症运动（Surviving Sepsis Campaign）指南
Surviving Sepsis Campaign Guidelines
#脓毒症 #感染 #休克
恶性疟对青蒿素类的耐药性最早在哪里出现,其分子标志是什么?
Where was artemisinin resistance in falciparum malaria first documented, and what molecular marker defines it?
最早出现于柬埔寨西部以及泰柬、泰缅边境的大湄公河区域,分子标志是恶性疟原虫kelch13(K13)基因编码的β螺旋桨(propeller)结构域突变。K13突变延缓青蒿素对早期环状体的杀伤,寄生虫清除半衰期明显延长,退热与转阴推迟、治疗失败率上升;加上青蒿素半衰期很短,单药更易被耐药击穿,故现场已改用青蒿素联合疗法,并以K13突变监测耐药扩散。
It emerged first in western Cambodia near the Thai border in the Greater Mekong region; the defining marker is mutation of the Plasmodium falciparum kelch13 (K13) propeller domain. K13 mutations slow artemisinin killing of early ring stages, markedly prolonging parasite clearance half-life, delaying fever resolution and parasite clearing, and raising treatment failure. Since artemisinins are very short-lived drugs easily defeated by resistance in monotherapy, programs moved to artemisinin-based combination therapy and monitor K13 mutations for spread.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
Ariey F等论文《A Molecular Marker of Artemisinin-Resistant Plasmodium falciparum Malaria》,Science 2014(巴斯德研究所与合作团队)
Ariey F et al., 'A Molecular Marker of Artemisinin-Resistant Plasmodium falciparum Malaria', Science, 2014 (Institut Pasteur and collaborators)
独立核验依据 · Independent verification: 核验依据 1 EUROPEPMC 标识 24352242：A molecular marker of artemisinin-
#青蒿素 #恶性疟原虫 #耐药性
肺结核治疗为什么要几种抗结核药联合使用，并且坚持整整六个月？
Why does treating pulmonary tuberculosis demand a combination of several anti-tuberculosis drugs taken for a full six months?
双重压力决定了这一策略。其一为防耐药：病灶内菌量可高达上亿，自发突变的耐药株天然存在，单药治疗无异于定向筛选耐药菌，联用三四种药后同时发生多重突变的概率趋近于零。其二为彻底灭菌：不同药物针对不同代谢状态的菌群——异烟肼杀灭快速繁殖菌，利福平穿透干酪灶与巨噬细胞打击半休眠菌，吡嗪酰胺在酸性环境中清除持留菌；唯有足量足疗程才能根除引起复发的菌库。
Two pressures dictate the strategy. First, forestalling resistance: lesions may harbor hundreds of millions of bacilli, and spontaneous mutants resistant to any single drug already exist, so monotherapy merely selects them; combining three or four agents pushes the chance of simultaneous multi-drug mutations toward zero. Second, sterilization: each agent targets a different metabolic population - isoniazid kills rapidly dividing bacilli, rifampin penetrates caseous foci and macrophages to strike semi-dormant ones, and pyrazinamide eliminates persisters in acidic niches - and only full-dose, full-course therapy eradicates the relapse-causing reservoir.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
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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。
Nahid P等，美国胸科协会/疾病控制与预防中心/感染病学会联合临床实践指南《Treatment of Drug-Susceptible Tuberculosis》，Clinical Infectious Diseases 2016年
Nahid P et al., Official ATS/CDC/IDSA Clinical Practice Guidelines: Treatment of Drug-Susceptible Tuberculosis, Clinical Infectious Diseases 2016
#结核病 #联合化疗 #耐药突变
艾滋病（HIV）是如何传播的？能否治疗？
How is HIV/AIDS transmitted and can it be treated?
HIV 通过性接触、血液和母婴途径传播，不通过日常接触（共餐、握手）传播。现虽不能根治，但规范抗逆转录病毒治疗可抑制病毒、延长生命并大大降低传染风险。
HIV spreads through sexual contact, blood, and mother-to-child; not through daily contact like sharing meals or handshakes. There is no cure yet, but proper antiretroviral therapy suppresses the virus, extends life, and greatly reduces transmission.
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）《HIV 综合指南》
World Health Organization (WHO) Consolidated Guidelines on HIV
#艾滋病 #HIV #传染
流感和普通感冒有什么不同？
How does influenza differ from the common cold?
流感由流感病毒引起，起病急、高热、全身酸痛乏力明显，并发症（如肺炎）风险高，老人儿童尤甚。普通感冒症状轻、以鼻塞流涕为主。每年接种流感疫苗是有效预防手段。
Influenza is caused by influenza viruses with sudden high fever and prominent body aches and fatigue, and higher risk of complications like pneumonia—especially in the elderly and children. The common cold is milder, mainly a runny nose. Annual flu vaccination is effective prevention.
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）《流感立场文件》
World Health Organization (WHO) Influenza Position Paper
#流感 #疫苗 #感染
食物中毒后在家该如何处理？
How should you manage food poisoning at home?
多数轻症食物中毒以呕吐腹泻为主，关键是补充水分和电解质防脱水，清淡进食。若出现高热、血便、持续呕吐无法进水或脱水明显，须及时就医。
Most mild food poisoning causes vomiting and diarrhea; the key is replacing fluids and electrolytes to prevent dehydration, with light eating. Seek care for high fever, bloody stools, persistent vomiting, or clear dehydration.
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
Harrison's Principles of Internal Medicine 第20版,McGraw-Hill,2018
J. Loscalzo et al., Harrison's Principles of Internal Medicine, 20th ed., McGraw-Hill, 2018
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY ISBN 标识 9781259644047（按标识回读: Harrison's prin
#食物中毒 #腹泻 #脱水
为什么不能滥用抗生素？
Why should antibiotics not be overused?
抗生素只对细菌感染有效，对感冒等病毒无效。滥用会催生耐药菌，使感染越来越难治疗，甚至无药可用。应按医嘱足量足疗程使用，不自行购买或停药。
Antibiotics work only against bacteria, not viruses like the common cold. Overuse breeds drug-resistant bacteria, making infections harder or impossible to treat. Use them exactly as prescribed—never self-buy or stop early.
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
Harrison's Principles of Internal Medicine 第20版,McGraw-Hill,2018
J. Loscalzo et al., Harrison's Principles of Internal Medicine, 20th ed., McGraw-Hill, 2018
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY ISBN 标识 9781259644047（按标识回读: Harrison's prin
#抗生素 #耐药 #合理用药
流感疫苗为什么需要每年重新接种一次?
Why does the influenza vaccine need to be repeated every year?
因为流感病毒变异极快,上一季诱生的抗体往往匹配不上当年的流行株。病毒表面的血凝素HA与神经氨酸酶NA不断积累点突变,即抗原漂移,使既有抗体识别能力下降;不同亚型毒株重配还会造成抗原转变,可能引发大流行。世界卫生组织依托全球流感监测体系每年两次推荐下一季疫苗毒株组分,所以疫苗必须逐年更新接种。
Because influenza viruses mutate very fast, and antibodies raised last season often miss the strains circulating this year. Point mutations keep accumulating in surface hemagglutinin HA and neuraminidase NA - antigenic drift - eroding antibody recognition, while reassortment between subtypes can cause antigenic shift and even pandemics. Twice a year the World Health Organization recommends next season's vaccine composition through its global surveillance network, so vaccination must be renewed annually.
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
Harrison's Principles of Internal Medicine 第20版,McGraw-Hill,2018
J. Loscalzo et al., Harrison's Principles of Internal Medicine, 20th ed., McGraw-Hill, 2018
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY ISBN 标识 9781259644047（按标识回读: Harrison's prin
#流感疫苗 #抗原漂移 #季节性流感
为什么患普通感冒时医生一般不开抗生素,而是建议休息和对症处理?
Why do physicians usually skip antibiotics for the common cold and advise rest plus symptomatic relief instead?
因为普通感冒绝大多数由鼻病毒等呼吸道病毒引起,而抗生素只对细菌有效。抗生素靠破坏细菌细胞壁或抑制其核糖体合成蛋白来杀菌,病毒没有这些结构,它们钻进人体细胞后借用宿主的酶系统复制,药物找不到可攻击的靶点。滥用抗生素还会误伤肠道正常菌群,带来腹泻等副作用,并筛选出耐药细菌,危害今后的治疗。
The common cold is overwhelmingly caused by respiratory viruses such as rhinoviruses, whereas antibiotics work only against bacteria. These drugs kill bacteria by wrecking their cell walls or blocking protein synthesis on bacterial ribosomes; viruses possess neither structure and replicate inside human cells using the host's enzymatic machinery, so there is no target to attack. Overuse additionally damages normal gut flora, brings side effects like diarrhea and selects for resistant bacteria that complicate future therapy.
难度 入门 · 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 #病毒性感冒 #细菌耐药