CDC says study of 1,800 U.S. health care workers confirms efficacy of Pfizer and Moderna vaccines
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CDC says study of 1,800 U.S. health care workers confirms efficacy of Pfizer and Moderna vaccines
![CDC says study of 1,800 U.S. health care workers confirms efficacy of Pfizer and Moderna vaccines]()
Reviewed by V. Kumar
on
May 20, 2021
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