Name: 保罗.埃瓦尔德问，我们能驯化病菌么？
Uploaded: 2008-05-07T01:00:00Z
Duration: 17 min 32 s
Description: 进化生物学家保罗.埃瓦尔德把我们带入下水道来讨论病菌。为什么病菌种的多数是有害的？我们如何才能把有害的病菌变为无害的？为了寻找答案，他考察了一个令人作呕而又有吸引力的实例：痢疾。

进化生物学家保罗.埃瓦尔德把我们带入下水道来讨论病菌。为什么病菌种的多数是有害的？我们如何才能把有害的病菌变为无害的？为了寻找答案，他考察了一个令人作呕而又有吸引力的实例：痢疾。

保罗.埃瓦尔德问，我们能驯化病菌么？

Germs evolve based on how they spread, and waterborne diseases like cholera become more deadly when they don't need healthy hosts to transmit. In Chile, after blocking waterborne transmission, cholera strains evolved to become far less toxic within just a few years. This shift not only reduced deaths but also prevented the rise of antibiotic resistance. Simple public health measures can nudge pathogens to become less harmful over time.

Cleaning Water Can Make Deadly Germs Turn Gentle

bacteria

biology

disease

evolution

global issues

health

illness

medicine

microbiology

science

TED Stage Talk

Paul Ewald: 保罗.埃瓦尔德问，我们能驯化病菌么？