KGO ABC World News Tonight With David Muir April 16, 2021 00:38:00
People in a riskier situation. >> the picture across the nation. whit, you reported pfizer ceo predicting americans might need a third shot within a year, a booster after being vaccinated. and i know tonight theres new data out on how many people have been infected with the virus after being vaccinated, and the number is very low, which is encouraging. >> reporter: david, theyre called breakthrough infections, and these new numbers were getting from the cdc show of the 66 million americans who h...
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