Pfizer tests its vaccine on younger children, starting with those age 5 to 11 | WNT
The first participants in the Pfizer study are 9-year-old twins, whose mother is an infectious disease doctor. Researchers said that testing the vaccine on children is a critical step. WATCH THE FULL EPISODE OF 'WORLD NEWS TONIGHT': https://bit.ly/2NRhyBk WATCH OTHER FULL EPISODES OF WORLD NEWS TONIGHT: https://ift.tt/2Mz7OoZ WATCH WORLD NEWS TONIGHT ON HULU: https://bit.ly/3iQLwPp #WorldNewsTonight #Pfizer #COVID19
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