For Immediate Release:
Assertion From:

Statement Author

Management Job

Director – Heart for Biologics Analysis and Study (CBER)

Peter Marks
M.D., PhD.


As of April 12, far more than 6.8 million doses of the Johnson & Johnson (Janssen) vaccine have been administered in the U.S. CDC and Fda are reviewing info involving 6 noted U.S. scenarios of a unusual and serious style of blood clot in men and women immediately after acquiring the J&J vaccine. In these instances, a variety of blood clot named cerebral venous sinus thrombosis (CVST) was witnessed in combination with reduced levels of blood platelets (thrombocytopenia). All six cases happened among the females amongst the ages of 18 and 48, and symptoms occurred 6 to 13 days right after vaccination. Remedy of this particular variety of blood clot is diverse from the treatment that could possibly usually be administered. Commonly, an anticoagulant drug named heparin is used to deal with blood clots. In this environment, administration of heparin may well be dangerous, and different treatments have to have to be supplied.

CDC will convene a conference of the Advisory Committee on Immunization Methods (ACIP) on Wednesday to more critique these situations and evaluate their opportunity importance. Fda will assessment that analysis as it also investigates these scenarios. Right until that process is total, we are recommending a pause in the use of this vaccine out of an abundance of caution. This is vital, in element, to be certain that the wellbeing care provider group is mindful of the opportunity for these adverse events and can strategy for good recognition and management owing to the special treatment expected with this style of blood clot.

Correct now, these adverse gatherings seem to be particularly exceptional. COVID-19 vaccine protection is a top precedence for the federal govt, and we get all reports of wellness difficulties pursuing COVID-19 vaccination really very seriously. Folks who have received the J&J vaccine who produce extreme headache, abdominal soreness, leg discomfort, or shortness of breath in a few months soon after vaccination should really speak to their health care provider. Wellbeing treatment vendors are questioned to report adverse events to the Vaccine Adverse Event Reporting System at

CDC and Food and drug administration will offer more information and answer inquiries later on now at a media briefing. A recording of that media contact is readily available on the FDA’s YouTube channel.



The Food and drug administration, an company in just the U.S. Division of Wellness and Human Providers, guards the public wellness by assuring the protection, efficiency, and security of human and veterinary prescription drugs, vaccines and other biological products for human use, and clinical gadgets. The company also is responsible for the security and security of our nation’s food stuff offer, cosmetics, dietary nutritional supplements, solutions that give off electronic radiation, and for regulating tobacco merchandise.