CARDIFF, WALES - DECEMBER 08: A member of staff poses with a phial of Pfizer-BioNTech Covid-19 vaccine at a vaccination health centre on the first day of the largest immunisation programme in the UK's history on December 8, 2020 in Cardiff, United Kingdom. Wales joined the other UK nations in rolling out the covid-19 vaccine on Tuesday, a rare moment of coordination after months of disjointedness in the four nations' pandemic response. Wales introduced a 17-day "firebreak" lockdown in October and November to suppress the surge in covid-19 cases, but infections have continued to rise. (Photo by Justin Tallis/Pool/Getty Images)
FDA greenlights Pfizer Covid-19 vaccine for adolescents
03:59 - Source: CNN
CNN  — 

The teenaged boys all looked like they were having heart attacks.

They complained of chest pain and general discomfort, and tests looked at first as if they were suffering an acute myocardial infarction, or heart attack.

But they weren’t. Instead, the seven youths ages 14 to 19 were suffering from a very rare type of heart inflammation. It’s one that public health officials are beginning to link to Covid-19 vaccines.

“Fortunately, none of our patients were critically ill and all of them responded very quickly to treatment,” Dr. Judith Guzman-Cottrill of Oregon Health & Science University told a meeting of the National Vaccine Advisory Committee Thursday.

While all the young patients were hospitalized for cardiac monitoring because of their symptoms, they quickly recovered.

Guzman-Cottrill said she believes the heart inflammation, called myocarditis, might be a result of a very rare reaction to the coronavirus vaccine. All seven patients had been recently vaccinated, and none had evidence of a recent coronavirus infection.

Children and teens appear to have stronger immediate reactions to the vaccine than adults do, she noted. These reactions, widely reported, include fever, malaise and headache. Inflammation of the heart may be a more extreme manifestation of this response, Guzman-Cottrill said.

“I am wondering if myocarditis is actually an additional rare adverse event related to systemic reactogenicity and/or immunogenicity and these younger patients just tend to have more reactogenicity compared to older populations – and more severe reactogenicity,” she told the NVAC meeting.

NVAC advises the US Health and Human Services Department and asked Guzman-Cottrill to describe findings she reported June 1 in the journal Pediatrics.

The seven youths had chest pain, fever and other symptoms and test results looked like those seen in people having acute myocardial infarctions – the technical term for a heart attack. But none of the teenagers was having a heart attack.

The patients all were better within days. Different treatments were tried, including aspirin, ibuprofen and steroids.

“We still don’t know to this day what the optimal therapy is,” Guzman-Cottrill said.

Doctors in Virginia and Texas reported similar findings Wednesday in a case series of seven men ages 19 to 39. They, too, had alarming symptoms including chest pain. They were diagnosed with myocarditis, and were treated and released, the doctors reported in the journal Circulation.

A different group of vaccine advisers, the Centers for Disease Control and Prevention’s Advisory Committee on Immunization Practices, were scheduled to meet Friday to discuss whether myocarditis might be clearly linked to vaccines. That meeting has been rescheduled for next week because of the Juneteenth federal holiday.

The US Food and Drug Administration is considering the possible myocarditis risk as it decides how to advise companies that want to seek authorization for using vaccines in children under 12. The FDA has noted that people will want extra safety data for children, especially given that the virus is less likely to cause severe disease and death in children than in adults.

Guzman-Cottrill says it’s important for pediatricians and parents to be aware of the symptoms but said she is watching CDC data indicating that millions of youths have been vaccinated with very few cases of myocarditis being reported. “That is very reassuring to me,” she said.

CDC Director Dr. Rochelle Walensky said her agency is on the lookout for cases but is finding they are unusual.