Vintage hand-washing posters, 1900s

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The World Health Organization has had an official and recommended method of hand-washing since 2009. It’s an 11-step process that, all done properly, takes 42.5 seconds. The WHO is following in an age-old practice — it was a doctor from Hungary, Ignaz Semmelweis, who was the first to promote the scientific value of hand-washing in […]

The post Vintage hand-washing posters, 1900s appeared first on Rare Historical Photos.

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