| Johnson & Johnson said Wednesday that studies showed a booster dose of its vaccine showed "a rapid and robust increase in spike-binding antibodies, ninefold higher than 28 days after the primary single-dose vaccination." The company said it was working with federal officials on next steps to boost the effects of the vaccine and ready a possible booster shot. |  |
News Alert Wednesday, August 25 | | | | | | | | | | | |
