A new polio epidemic could happen in the USA as more parents opt out of immunization.
posted by Mordhaus
7 years 1 month ago • 70 views • 7:09search results matching tag: polio
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7 years 1 month ago • 70 views • 7:09
YouTube: The world has a lot to thank Henrietta Lacks for, and yet many do not know what she has contributed. From helping to create the polio vaccine to the study of radiation, Henrietta and her HeLa... continue reading
posted by PlayhousePals
8 years 7 months 1 week ago • 20 views • 4:42- 1
