Heart risks rare after Pfizer Covid vaccination, study finds; researchers identified 54 cases of myocarditis among more than 2,500,000 people ages 16 years and older who got at least one dose of the Pfizer vaccine.
Chest pain was the most common reported symptom, along with fever and shortness of breath. The median hospital stay was three days, with 65 percent of patients sent home without ongoing need for treatment.
More than three-quarters of the cases were described as mild, meaning the patients had symptoms but their heart function was normal. Another 22 percent with symptoms experienced some abnormality in cardiac testing. “The study reinforces the bottom-line message, which is that most of these cases are mild,” said Dr. Walid Gellad, the director of the Center for Pharmaceutical Policy and Prescribing at the University of Pittsburgh.
“This is a problem primarily for teenage boys and young men,” Gellad said. “It's just a repeated pattern in every study that this is a problem after the second dose primarily for young men.”Dr. Yvonne Maldonado, a pediatric infectious disease physician at Stanford University, said it is important that people know that the risk of myocarditis from coronavirus infection remains higher than from Covid vaccinations.
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