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Covid vaccine: The worrying side effect that could lead to ‘severe heart failure'

Daily Express logo Daily Express 28/01/2022 Diana Buntajova

The UK is currently seeing a rapid booster rollout, with more than 37 million extra jabs already given out. Even though the Centers for Disease Control and Prevention report that Covid vaccines are "safe and effective", they can trigger side effects in some people. New research looks into a specific side effect linked to the jab. Here's who seems to be most at risk and when it's likely to occur.

The side effect linked to coronavirus jabs in question is myocarditis.

Myocarditis describes inflammation of the heart muscle, the Mayo Clinic states.

This inflammation can lead to a lowered ability for the heart to pump blood, and can lead to rapid or irregular heart rhythms.

New research, published in The Journal of the American Medical Association (JAMA), reports that the severity of myocarditis can vary across patients.

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Covid vaccine side effect: Myocarditis could lead to ‘severe heart failure'. © GETTY Covid vaccine side effect: Myocarditis could lead to ‘severe heart failure'.

The research shares: "The clinical presentation and course of myocarditis is variable, with some patients not requiring treatment.

"And others experiencing severe heart failure that requires subsequent heart transplantation or leads to death."

Both the UK and international data report "an increase" in myocarditis cases following vaccination, according to the Government.

For example, statistics from the US share that from 296 million doses of mRNA vaccines, there were 1,226 reports of myocarditis after.

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The new study from JAMA looked at 1626 cases of myocarditis in total.

They concluded that the cases were highest after the second dose of vaccine.

And the age groups who saw the highest numbers were adolescent males aged between 12 to 15 years, adolescent males aged between 16 to 17, and young men aged 18 to 24.

However, they warn that multiple ages and sexes can be also at risk.

Myocarditis describes an inflammation of the heart muscle. © GETTY Myocarditis describes an inflammation of the heart muscle.

The research concluded: "Vaccination against COVID-19 provides clear public health benefits, but vaccination also carries potential risks.

"This risk should be considered in the context of the benefits of COVID-19 vaccination."

What about myocarditis data in the UK?

The Government reports that as of December 8, 2021, the UK saw more than 700 cases of myocarditis following a Covid jab.

However, they stress that many of these were self-reported.

Vaccine effectiveness. © Vaccine effectiveness.

How do I know if I have myocarditis?

The inflammation can present with:

  • Chest pain
  • Shortness of breath
  • Feelings of having a fast-beating, fluttering, or pounding heart.

The Government advises that anyone who experiences these symptoms within 10 days of their Covid vaccine "should urgently seek medical assistance".

Based on current data, most of these cases seem "mild" and are able to recover shortly with standard treatment.

"However, it may have long-term consequences and studies are in progress to further understand the potential longer-term consequences with follow-up at three months and six months," the Government concluded.


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