US Calls for J&J COVID-19 Vaccine ‘Pause’ Over Clot Reports

US Calls for J&J COVID-19 Vaccine 'Pause' Over Clot Reports US Calls for J&J COVID-19 Vaccine 'Pause' Over Clot Reports Bottles of the single-dose Johnson & Johnson Janssen Covid-19 vaccine await transfer into syringes for administration at a vaccine rollout targetting immigrants and the undocumented organized by the St. John's Well Child and Family Center and the Los Angeles County Federation of Labour and Immigrant rights groups on March 25 (Frederic J. Brown/AFP via Getty Images)

ZEKE MILLER Tuesday, 13 April 2021 07:23 AM

The U.S. is recommending a “pause” in administration of the single-dose Johnson & Johnson COVID-19 vaccine to investigate reports of potentially dangerous blood clots.

In a joint statement Tuesday, the Centers for Disease Control and Prevention and the Food and Drug Administration said it was investigating clots in six women in the days after vaccination, in combination with reduced platelet counts. More than 6.8 million doses of the J&J vaccine have been administered in the U.S.

U.S. federal distribution channels, including mass vaccination sites, will pause the use of the J&J shot, and states and other providers are expected to follow.

CDC's Advisory Committee on Immunization Practices will meet Wednesday to discuss the cases and the FDA has also launched an investigation of the cases.

“Until that process is complete, we are recommending a pause in the use of this vaccine out of an abundance of caution,” Dr. Anne Schuchat, Principal Deputy Director of the CDC and Dr. Peter Marks, director of the FDA’s Center for Biologics Evaluation and Research said in a joint statement.