U.S. health leaders are hitting the brakes on the distribution of the one-dose Johnson & Johnson COVID-19 vaccine after a number of patients developed a rare blood disorder.
All six patients are women between the ages of 18 and 48, and all have developed blood clots as a result of the disorder. One of the women has died, and another is hospitalized in critical condition.
The Centers for Disease Control and Prevention says almost seven million Americans have received the J&J version of the vaccine. The Food and Drug Administration says the announcement counts as a strong recommendation that state health officials stop using that version of the vaccine, while its usage at all federally-run clinics will be paused while scientists take another look at whether or not it is safe for the general public to use.
Both the Pfizer and Moderna two-dose vaccines are still considered safe to use.