U.S. health agencies lifted the pause on Johnson & Johnson’s Covid-19 vaccine on Friday, 10 days after urging providers to hold off on using the shot while they reviewed serious and rare cases of blood clots among several people who received it.
The Food and Drug Administration and the Centres for Disease Control and Prevention said in a statement that they found the shot was safe and effective at preventing Covid-19. They added that the chance of developing the rare blood-clot syndrome is very low, but that they will continue to investigate.
A total of 15 cases of blood clots out of about 8 million doses administered have been reported, a CDC representative told a group of advisers to the agency in a meeting Friday. Nearly 10 million doses of J&J’s vaccine across the U.S. are ready to be used, according to CDC data, but just how quickly they will find their way into people’s arms is unclear.