The challenge will be explaining how protective the J&J shot is after the astounding success of the first US vaccines. Two doses of the Pfizer and Moderna shots were found to be about 95% effective against symptomatic COVID-19. One dose of the J&J vaccine was 85% protective against the most severe COVID-19. At Yale, Balcezak is struggling with how to make the best use of the J&J shot's advantages without appearing to target it to underserved populations. “Right now, it’s not vaccine against vaccine, it’s vaccine against virus," said Dr. Nirav Shah, director of the Maine Center for Disease Control and Prevention.

Source: Mint February 26, 2021 14:08 UTC