Pfizer and Moderna boosters help protect Americans who received J.&J. shots, the C.D.C. reported.
![](https://static01.nyt.com/images/2022/03/29/multimedia/29virus-briefing-jj/29virus-briefing-jj-mediumThreeByTwo440.jpg)
By BY APOORVA MANDAVILLI from NYT Health https://ift.tt/f5Uhb7P
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Pfizer and Moderna boosters help protect Americans who received J.&J. shots, the C.D.C. reported.
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