mRNA COVID-19 Vaccines To Add Warning Language On Myocarditis Risk
US FDA will rapidly update fact sheets with information on myocarditis/pericarditis occurring primarily in young men and adolescent males following the second dose, agency's Doran Fink tells the CDC’s Advisory Committee on Immunization Practices, which said benefit-risk of the Pfizer/BioNTech and Moderna vaccines remains favorable.
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In expanding authorization of booster doses for both mRNA vaccines, the agency updated Moderna’s fact sheet to state the vaccine appears to pose a higher risk of myocarditis/pericarditis in males under age 40 years after the second dose, although data are ‘not yet dispositive.’
Pfizer’s Comirnaty: Emerging Myocarditis Signal Drew Flurry Of Attention During Compressed BLA Review
Multiple offices within CBER worked to get a handle on the myocarditis issue in the midst of a three-month review of the COVID vaccine, with US FDA staff undertaking a quantitative benefit-risk assessment and negotiating with Pfizer on postmarket safety studies.
The agency said its booster EUA decision was based on the immunogenicity studies that were submitted.