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Semmelweis's hand washing advice helped the number of deaths from birthing plummet

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Semmelweis's hand washing advice helped the number of deaths from birthing plummet

↗https://www.dailymail.com/video/health/video-2435859/Video-Semmelweiss-hand-washing-advice-helped-birthing-deaths-plummet.html

florence knightingale semmelweis hand washing

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