FDA restricts J&J’s COVID-19 vaccine due to blood clot risk

U.S. regulators on Thursday strictly limited who can receive Johnson & Johnson’s COVID-19 vaccine due to the ongoing risk of rare but serious blood clots.

The Food and Drug Administration said the shot should only be given to adults who cannot receive a different vaccine or specifically request J&J’s vaccine. U.S. authorities for months have recommended that Americans get Pfizer or Moderna shots instead of J&J’s vaccine.

FDA’s vaccine chief Dr. Peter Marks said the agency decided to restrict the vaccine after taking another look at the data on the...