Selected adverse events reported after COVID-19 vaccination
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Selected adverse events reported after COVID-19 vaccination

  • Published Date:

    July 19, 2021

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  • Description:
    Updated July 19, 2021 Results from safety monitoring efforts are reassuring. Some people have no side effects. Many people have reported only mild side effects after COVID-19 vaccination. What you need to know • COVID-19 vaccines are safe and effective. • Millions of people in the United States have received COVID-19 vaccines under the most intense safety monitoring in U.S. history. • CDC recommends you get a COVID-19 vaccine as soon as you can. • Adverse events described on this page have been reported to the Vaccine Adverse Event Reporting System (VAERS)external icon. • VAERS accepts reports of any adverse event following vaccination, even if it is not clear the vaccine caused the problem. • After a temporary pause to investigate thrombosis with thrombocytopenia syndrome (TTS) following vaccination with Johnson & Johnson’s Janssen (J&J/Janssen) COVID-19 Vaccine, the data show that TTS is a rare adverse event. The known and potential benefits of the J&J/Janssen vaccine outweigh its known and potential risks. • CDC, the U.S. Food and Drug Administration (FDA), and other federal agencies will continue to monitor the safety of COVID-19 vaccines.
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