Shimabukuro stated the overwhelming majority of circumstances occurred inside per week of vaccination.
283 circumstances of carditis after the second vaccine dose have been noticed in 16-24 12 months olds within the VAERS information. The CDC stated that compares with expectations of 10 to 102 circumstances for this age vary primarily based on incidence charges within the US background inhabitants.
Among the many reported circumstances of carditis, Shimabukuro stated, there’s a predominance of males within the youthful age teams.
The common age of sufferers who skilled irritation after a second dose of the vaccine was 24, in keeping with VAERS information. Just below 80 p.c of the circumstances have been males.
Shimabukuro additionally stated the Vaccine Security Information System (VSD) — one other security monitoring system — confirmed an elevated incidence of carditis in folks aged 16 to 39 after the second shot in comparison with the speed noticed after the primary dose.
Pfizer stated it helps the CDC’s evaluation of the incidence of carditis, noting that “the variety of experiences is small given the variety of doses taken.”
About 130 million folks in the US have acquired two doses of an mRNA vaccine.
“You will need to perceive that rigorous analysis of experiences is ongoing and it has not been decided that COVID-19 mRNA vaccines trigger myocarditis or pericarditis,” the corporate stated in a press release.
Moderna additionally stated it had not established a causal hyperlink to the situation and its vaccine. She stated she is actively working with public well being and regulatory authorities to additional assess the difficulty.
The CDC stated it’ll maintain a gathering of the Immunization Practices Advisory Committee subsequent week to additional assess the proof and assess the danger of myocarditis after mRNA vaccination for COVID-19.