Recipients of the one-shot Johnson & Johnson COVID-19 vaccine may need to get a second dose to protect against the Delta and Lambda coronavirus variants because its less effective against them, a new study suggests, per The New York Times.
"The message that we wanted to give was not that people shouldn't get the J&J vaccine, but we hope that in the future, it will be boosted with either one dose of J&J or a booster with [the Pfizer and Moderna COVID-19 vaccines]," Nathaniel Landau, a virologist at New York University's Grossman School of Medicine who led the study, told the Times.
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