They are investigating any links between the single-dose vaccine and blood clots.
Washington,
Top US health authorities have recommended a "pause" in the use of the Johnson & Johnson Covid-19 vaccine "out of an abundance of caution" as they investigate any links between it and blood clots, a regulator said Tuesday.
The US Food and Drug Administration and the Centers for Disease Control are assessing the "potential significance" of six reported cases of a rare blood clot in patients who have received the shot, the FDA tweeted.
"Until that process is complete, we are recommending this pause," it said.