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So you got the J&J vaccine. Do you need a booster? — AAMCNews

August 27, 2021
J&J vaccine boxes

Studies suggest the Johnson & Johnson COVID-19 vaccine is very effective at protecting against hospitalization and death. But because just 14 million U.S. residents have received the J&J shot  compared to more than 160 million for the mRNA vaccines from Pfizer and Moderna  scientists don’t have as much information on the strength of immunity after vaccination or whether a booster shot is safe or effective. Here’s what they do know, so far.