Scientists and doctors look constantly and carefully at all reported vaccine side effects.
From their monitoring, they saw a small number of reports of people who got the J&J/Janssen COVID-19 Vaccine developing a rare and severe type of blood clot. This type of blood clot is found in the blood vessels that drain blood from the brain and is combined with low platelets. Platelets help blood clot and stop bleeding.
All of these reports were in women between the ages of 18 and 48, and the problems were found up to 2 weeks after vaccination.
There had been more than 7.5 million doses of the J&J/Janssen COVID-19 Vaccine administered as of the time of the pause in the United States.
Published at Fri, 16 Apr 2021 04:00:00 +0000