2021年6月27日 星期日

chlorine, Puerperal fever monthly mortality rates. Natural Pool-Owners Are Kissing Chlorine and Other Chemicals Goodbye

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No chlorine? No problem. This summer, homeowners are trading traditional pools for natural or "bio" pools, which are completely chemical-free.




産褥熱の予防法
v Puerperal fever monthly mortality rates for the First Clinic at Vienna Maternity Institution 1841–1849. Rates drop markedly when Semmelweis implemented chlorine handwashing mid-May 1847 (see rates).
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