Test Your Knowledge of Medical Innovation

The return of leeches, a view of viruses, and more in this Wall Street Journal quiz

Necessity it has been said, is the mother of invention. Nowhere is this truer than in health care, where the perpetual search for new treatments is most evident today in the scramble for a Covid-19 vaccine.

2020欧洲杯APPYou can test your knowledge of medical advances over the centuries by taking this quiz. If it gives you a headache, you can resort to some medical technology with a long history.

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