The first revolution occurred soon after British surgeon John Snow discovered, in 1854, that cholera is spread by contaminated water: this led to sanitation systems that protected people from the devastating infections that had habitually plagued mankind.

• 第一次医学革命发生在 1854年，英国外科医生约翰 - 斯诺发现霍乱是由污染的水源传播之后不久，这导致卫生系统的出现。 该系统保护人类免遭常见的严重传染病的侵害。