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The U.S. Food and Drug Administration (FDA) is defending the Moderna COVID-19 vaccine after three Nordic countries paused part of the shot’s rollout due to cases of rare heart inflammation.
Denmark, Finland and Sweden limited use of Moderna in younger people after data found some males under age 30 were developing myocarditis after receiving the jab.
The vaccine is the second most commonly used in the U.S., having been administered over 152 million times since it received emergency use authorization from the FDA in December.
Officials said that they are aware of the concerns, but still support the vaccine’s use because the potential benefits outweigh risks.
‘The FDA is aware of these data,’ an FDA official said in a statement, reports Fox News.
‘At this time, FDA continues to find that the known and potential benefits of vaccination outweigh the known and potential risks for the Moderna COVID-19 Vaccine.’
A Moderna representative did not immediately return DailyMail.com’s request for comment.
Use of the Moderna vaccine has been paused in Sweden and Finland for people under the age of 30 and in Denmark for people younger than 18. The FDA stands by the vaccine’s use in the United States, saying the benefits outweigh the risks of receiving the shots (file photo)
The Moderna vaccine has been tied to cases of heart inflammation, particularly in young people, leading to officials in Denmark, Finland and Sweden putting a pause on its use in some populations. Pictured: A woman in Ishoej, Denmark, receives a dose of a COVID-19 vaccine on September 11
All three Nordic nations made the decision to pause use of the vaccine in young people last week.
The Finnish Institute for Health and Welfare said on Thursday that authorities won’t give the vaccine to males under age 30, and they will be offered the Pfizer-BioNTech immunization instead.
The government agency said it found that young men and boys were at a slightly higher risk of developing myocarditis.
In Sweden, the Moderna jab will no longer be available to any one born after 1990, or those aged 30 and younger.
Denmark has restricted access to the vaccine to anyone under the age of 18.
Norway, another Nordic country, has not taken as drastic action as its neighbors, with health officials urging people under 30 to opt for the Pfizer vaccine instead.
All four countries based their decision on an unpublished study with Sweden’s Public Health Agency saying that it signals ‘an increased risk of side effects such as inflammation of the heart muscle or the pericardium’ – the double-walled sac containing the heart and the roots of the main vessels.
It added: ‘The risk of being affected is very small.’
Myocarditis and pericarditis, both types of inflammation of the heart, are known side effects of the Covid vaccines, and the Centers for Disease Control and Prevention (CDC) even warns that the condition may develop in young males after vaccination.
Heart inflammation is also a symptom of many viral infections like COVID-19, though, and the likelihood of developing the inflammation after infection is much higher than it is after vaccination.
The Swedish health agency said it would pause using the shot for people born in 1991 and later as data pointed to an increase of myocarditis and pericarditis among youths and young adults who had been vaccinated.
The pause will last until December 1.
Those conditions involve an inflammation of the heart or its lining.
‘The connection is especially clear when it comes to Moderna’s vaccine Spikevax, especially after the second dose,’ the health agency said.
A Moderna spokesperson said in an email the company was aware of the decisions by regulators in Denmark and Sweden to pause the use of its vaccine in younger individuals because of the rare risk of myocarditis and or pericarditis.
‘These are typically mild cases and individuals tend to recover within a short time following standard treatment and rest,’ they wrote.
‘The risk of myocarditis is substantially increased for those who contract COVID-19, and vaccination is the best way to protect against this.’
According to one U.S. study that has yet to undergo peer review young males under 20 are up to six times more likely to develop myocarditis after contracting COVID-19 than those who have been vaccinated.
Denmark said that, while it used the Pfizer-BioNTech vaccine as its main option for people aged 12 to 17 years, it had decided to pause giving the Moderna vaccine to people below 18 according to a ‘precautionary principle’.
In June, the CDC issued a warning that young males were at an increased risk of myocarditis after receiving the vaccine.
The label for both the Pfizer and Moderna vaccines were changed in the U.S. to reflect the warning, though usage was never paused.
Cases of inflammation after vaccination are rare, though they do occur often enough to concern regulators.
A recent study from Kaiser Permanente Southern California found that around seven out of every one million people that receive a two-shot COVID-19 vaccine will develop myocarditis.
People who receive the Covid vaccine are seven times as likely to develop heart inflamation after the second dose of the jab when compared to the first, finds a recent study by KPSC. Those who are unvaccinated are significantly more likely to develop myocarditis, however
The same study found that 47.5 out of every one million Covid patients experience heart inflammation.
While myocarditis will often resolve itself, it can be dangerous.
Heart inflammation can often lead to fatigue, shortness of breath and chest pain for patients.
People with inflamed hearts are at a higher risk for heart failure, heart attacks and strokes.
Attempting strenuous physical activity with an inflamed heart could also potentially lead to sudden cardiac arrest, or even death.
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