The Campaign To Wipe Out Polio Was Going Really Well ... Until It Wasn't
It looked as if polio would be the second human disease to be eliminated — after smallpox. But "2020 has been a terrible year," says Michel Zaffran, head of the Global Polio Eradication Initiative.
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Children's Health
October 30, 2020 at 11:44PM
Thứ Bảy, 31 tháng 10, 2020
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