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A Pfizer COVID-19 vaccine. Photo: Sven Hoppe/picture alliance via Getty Images

The CDC concluded Wednesday there is a "likely association" between heart inflammation and COVID-19 mRNA vaccines, especially in adolescents and young adults, but still see a clear benefit for the group to get the shot.

The big picture: The findings presented by the agency’s Advisory Committee on Immunization Practices coincide with similar data — that men under 30 make up a larger proportion of cases especially after the second shot, and the condition is rare and treatable.

What's happening: As a result, the agency will continue to track results long-term and officials agreed to add a warning about the risk to information sheets for the Pfizer and Moderna vaccines.

  • If myocarditis occurs after a first dose, the agency recommends the second should be deferred until more information is known. If the person has recovered, they can proceed to the second dose.
Photo: COVID-19 mRNA vaccines in adolescents and young adults: Benefit-risk discussion slides from the CDC ACIP meeting.

By the numbers: The CDC identified 12.6 cases per million second doses of any mRNA vaccine in the 21 days following vaccination.

  • 309 out of 323 were hospitalized; 295 out of those were discharged and nine remain in the hospital with two in ICU; five are without outcome data, as of June 11.
  • Roughly 300 million of the shots had been administered as of June 11, the agency said.

Be smart: The risk of severe illness due to COVID-19 even in young people is still greater, the agency says.

  • This type of myocarditis or pericarditis that has been linked to the mRNA vaccines appear to be more mild compared to the traditional condition.

Go deeper

John Frank, author of Denver
Jun 23, 2021 - Axios Denver

Colorado using text, email to nudge people who skipped second vaccine

Expand chart
Data: CDC; Chart: Danielle Alberti/Axios

Colorado public health officials are raising alarms about a new vaccine hesitant population — the half-vaxxers.

By the numbers: 129,000 people who received their first dose of a COVID-19 vaccine are overdue for their second shot, state officials tell Axios.

  • It's about 4% of the 2.9 million who received one dose, below estimated national averages for missed second doses.
Jun 23, 2021 - Health

The pandemic is a much bigger deal in some states than others

Expand chart
Data: Centers for Disease Control and Prevention; Chart: Axios Visuals

The coronavirus pandemic has essentially ended in some states, while others are still experiencing outbreaks.

Why it matters: The wide variation in states' vaccination rates means that stark disparities in case rates could be America's norm for awhile.

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