J&J says its COVID booster significantly increases antibodies


A booster shot of the Johnson & Johnson coronavirus vaccine offers a significant increase in antibodies, the company announced on Wednesday.

People who received a booster shot six to eight months after their first J&J dose saw “a rapid and robust increase in spike-binding antibodies, nine-fold higher than 28 days after the primary single-dose vaccination,” J&J said.

The announcement comes a week after the federal government announced that beginning the week of Sept. 20, those who received a Pfizer or Moderna vaccine should expect to be offered a booster shot eight months after their second dose.