FDA weighs strongest black box warning for COVID vaccines
The U.S. Food and Drug Administration (FDA) is considering adding the strongest safety warning available to COVID-19 vaccines.
Dec 15, 2025
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Disease or Syndrome: Myocarditis
Medical news and research articles
Study shows why mRNA-based COVID-19 vaccines can cause myocarditis
Stanford Medicine investigators have unearthed the biological process by which mRNA-based vaccines for COVID-19 can cause heart damage in some young men and adolescents—and they've shown a possible route to reducing its likelihood.
Dec 10, 2025
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FDA investigating possible adult deaths from COVID vaccines
The Food and Drug Administration is investigating whether COVID-19 vaccines caused deaths in adults, as part of a safety review that earlier appeared to just be focused on children.
Dec 10, 2025
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Genetic variant may explain why some children with myocarditis develop heart failure
A genetic variant is likely putting some children suffering with myocarditis—inflammation of the heart muscle—at higher risk of developing heart failure, which can be fatal, according to a study published in Circulation Heart ...
Dec 5, 2025
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CDC panel may change longtime rule on hepatitis B shots for newborns
A CDC advisory group is meeting today and preparing to vote on whether newborns should still get a hepatitis B vaccine within the first 24 hours of life, a significant change from guidance that has been in place since the ...
Dec 4, 2025
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FDA memo claims COVID vaccine tied to 10 child deaths
A confidential internal memo from the U.S. Food and Drug Administration (FDA) is creating new controversy around vaccine safety after an agency official said the COVID-19 vaccine may have played a role in the deaths of at ...
Dec 2, 2025
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Analysis of 14 million children finds COVID-19 infection poses greater heart complication risk than vaccination
A new study shows children and young people face long-lasting and higher risks of rare heart and inflammatory complications after COVID-19 infection, compared to before or without an infection. Meanwhile, the COVID-19 vaccination ...
Nov 4, 2025
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Health data in England show changing patterns of heart diseases before, during and after the pandemic
A comprehensive study of electronic health records for 57 million people living in England has revealed the evolving burden of cardiovascular diseases before, during and after the COVID-19 pandemic.
Oct 27, 2025
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Liquid biopsy offers early detection of ICI-related myocarditis with 40% mortality rate
Treatments for cancer are continuously improving, but they can still cause debilitating, even fatal, side effects. Immune checkpoint inhibitors, or ICIs, have revolutionized cancer therapy, yet their use can trigger a rare ...
Oct 10, 2025
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Risk of long COVID in children may be twice as high after a second infection
A new study published in The Lancet Infectious Diseases involving over 460,000 children and adolescents across 40 pediatric hospitals in the U.S. suggests that children who were infected with COVID-19 for the second time ...
Sep 30, 2025
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