Johnson & Johnson booster shot prompts large increase in immune response, company says

Johnson & Johnson says booster shot provides 'rapid and robust' Covid antibody increase Johnson & Johnson said a booster shot of its vaccine provides a nine-fold increase in Covid antibodies. NBC News

Johnson & Johnson said on Wednesday that studies show a booster shot of its vaccine provides a "rapid and robust increase" in Covid-19 antibodies when used on people who have already received its first dose.

The interim data showed people who already had been given the J&J vaccine experienced a nine-fold increase in spike-binding antibodies compared with 28 days after the first dose, the drugmaker said in a statement. ...