Dr. John Brownstein, ABC News medical contributor, shares his expertise as the FDA advisory...
efficacy
New data from Pfizer showed that a COVD-19 booster shot raises vaccine efficacy against...
Scientists are working to determine the COVID strain’s severity and if current vaccines are...
People who received the Pfizer or Moderna vaccine may be recommended to receive a...
Plus, the CDC says it is seeing a slight drop in vaccine efficacy when...
Johnson and Johnson paused the stage 3 trial after a participant developed an unexplained...
ABC News’ Tom Llamas reports on how the two vaccines stack up on the...
New data shows that the single-dose inoculation, which could get FDA emergency use authorization...
Alex Gorsky discusses the company’s strategy for shipping out its single-shot doses and how...
Dr. Jen Ashton is live with analysis of the AstraZeneca U.S. trial results released...
