Thứ Sáu, 22 tháng 5, 2020

NPR News: The Race For A Polio Vaccine Differed From The Quest To Prevent Coronavirus

The Race For A Polio Vaccine Differed From The Quest To Prevent Coronavirus
In the 1950s, as Dr. Jonas Salk and virologist Albert Sabin worked to create a vaccine to prevent infantile paralysis, the threat from polio was already long familiar to Americans.

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Health Care
May 23, 2020 at 02:14AM

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