A second dose makes J&J about 94% protective against COVID with symptoms, the drug company says, and J&J has handed its data to the FDA. One dose of the vaccine remains protective against severe disease from the delta variant, research shows.
A second dose makes J&J about 94% protective against COVID with symptoms, the drug company says, and J&J has handed its data to the FDA. One dose of the vaccine remains protective against severe disease from the delta variant, research shows.