Until the mid-1800s, doctors didn’t wash their hands. They believed diseases were spread by bad smells.

This is the story of doctor Ignaz Semmelweis, who in the 19th Century fought to convince his fellow doctors that washing their hands could save patients’ lives. But despite the success of his theory, he met a tragic end.

Video by Fernando Teixeira & Izabela Cardoso
Executive Producer: Camelia Sadeghzadeh

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