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Jonas Salk, the polio virus and the vaccine
Автор: NowYouKnowAbout
Загружено: 17 нояб. 2020 г.
Просмотров: 14 488 просмотров
Описание:
Polio was once one of the most feared viruses on the planet. But today we've almost forgotten about it. Why? Thanks to the vaccine developed by Jonas Salk that has saved countless lives and will soon allow us to wipe this disease of the face of the earth. Find out about Jonas Salk - you need to remember his name!
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