heart concerns with pfizer

please read important information about covid-19 vaccination requirements or testing for some visitors. our scientists pursue every aspect of cancer research—from exploring the biology of genes and cells, to developing immune-based treatments, uncovering the causes of metastasis, and more. from diagnosis to treatment, our experts provide the care and support you need, when you need it. michelle johnson, a cardiologist, says heart problems caused by a covid-19 vaccine are extremely rare. you may have read about heart issues experienced by some people who got the pfizer-biontech covid-19 vaccine (comirnaty®) or moderna covid-19 vaccine (spikevax™). these rare side effects include myocarditis, an inflammation of the middle layer of the heart muscle, and pericarditis, an inflammation of the lining around the heart. michelle johnson, a cardiologist at memorial sloan kettering cancer center, says that these heart issues are very rare, treatable, and not as dangerous as covid-19 itself.

the group that is most likely to develop myocarditis or pericarditis after getting the covid-19 vaccine is young men aged 12 to 39. these side effects have only occurred in people who received the pfizer-biontech vaccine or moderna vaccine. “it is even more rare after a booster dose.” young men ages 12 to 39 can wait longer between their first and second dose (of their primary vaccine series) to reduce their risk of myocarditis or pericarditis. all other groups should wait 3 weeks (for those who got the pfizer vaccine) or 4 weeks (for those who got the moderna vaccine) between primary vaccination doses. read about vaccine and booster timing if you have a weakened immune system (because of cancer or another medical condition) » most people can be successfully treated for myocarditis or pericarditis by a heart specialist and are able to rest and recover quickly. “in severe cases, a patient may need to be hospitalized for a more aggressive treatment strategy — intravenous drugs, a device to help their heart pump blood, or surgery.” “a young person is much more likely to get myocarditis or pericarditis from covid-19 itself than they would from a covid-19 vaccine,” she says. the cdc continues to monitor these and all potential safety problems. “i strongly recommend — and the cdc recommends — that everyone who is eligible get vaccinated and get their booster shots.”

the studies indicate that teenage boys and young men are most at risk of developing the condition, known as myocarditis. but even in this group, the vast majority of cases are mild and people recover quickly. the researchers found that up to 4 in 100,000 men developed myocarditis after receiving their second dose of the pfizer–biontech vaccine, but the incidence for women was fewer than one in 100,000. overall, fully vaccinated individuals were about twice as likely to be diagnosed with myocarditis as were unvaccinated individuals.

they found that 2 out of every 100,000 people who received at least one pfizer shot developed myocarditis, and that the incidence increased to almost 11 out of 100,000 among men aged 16–29. the same month, the us centers for disease control and prevention (cdc) reported that it had identified 5 cases out of 100,000 in men aged 18–24, rising to 6 cases per 100,000 in male adolescents aged 12–17. regulatory bodies in regions including the european union at large and australia continue to recommend both vaccines for children aged 12 and older.

michelle johnson, a cardiologist, says heart problems caused by a covid-19 vaccine are extremely rare. if they do occur, they usually clear up on their own the risk of developing inflammation of the heart muscle after receiving the pfizer–biontech covid-19 vaccine is very low, according to two getting at least one dose of the pfizer vaccine increased the risk of a rare type of heart inflammation, especially in young males, according to, .

though rare, pfizer and moderna’s vaccines have both been linked to a risk of myocarditis. however, the risk was higher following the second rare cases of inflammation of the heart have occurred after the second dose of mrna vaccines (moderna and pfizer-biontech). symptoms typically researchers from the centers for disease control and prevention (cdc) reviewed around 3,400 reports of side effects experienced by 12- to 17-year-olds after a, . cases of myocarditis reported to the vaccine adverse event reporting system (vaers) have occurred:after mrna covid-19 vaccination (pfizer-biontech or moderna), especially in male adolescents and young adults.more often after the second dose.usually within a week of vaccination.

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