Moderna Covid vaccine side effects: Heart damage can occur in younger men

The Medicines and Healthcare products Regulatory Agency (MHRA) have recognised that inflammation of the heart (known as myocarditis or pericarditis) is a possible risk of having the Moderna jab.

MHRA advised healthcare professionals to “be alert to the signs and symptoms of myocarditis and pericarditis”.

Recipients of the Moderna jab should “seek immediate medical attention” if they experience a new onset of:

  • Chest pain
  • Shortness of breath
  • Irregular heartbeat.

Common symptoms of myocarditis include:

  • A stabbing pain and/or tightness in the chest which may spread across the body
  • Shortness of breath when lightly exercising or walking
  • Difficulty breathing when resting
  • Flu-like symptoms such as a high temperature, tiredness and fatigue
  • Palpitations or an abnormal heart rhythm.

Treatment can involve close monitoring, anti-inflammatory medicines and antibiotics.

Long-term cases of myocarditis could develop into heart failure, with severe damage requiring a heart transplant.

What is pericarditis?

The NHS stated pericarditis is “not usually serious” but it has the potential to “cause serious health problems”.

Warning signs of pericarditis include:

  • Sharp or stabbing chest pain
  • Chest pain that worsens when you take a deep breath in or lie down.

“You may also have a high temperature and feel hot and shivery.” Added the NHS.

Pericarditis can change the sound of your heart, which can be picked up on by a medical professional.

Confirmation of pericarditis tends to involve blood tests, a chest X-ray, electrocardiogram (ECG) or echocardiogram in hospital.

Treatment may involve the use of anti-inflammatory painkillers, steroids or antibiotics; it can take up to two weeks to recover.

The MHRA still stands with the notion that “the benefits of getting vaccinated outweigh the risks in the majority of people”.

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As of June 23, 2021, there have been five reports of myocarditis and two reports of pericarditis following the administration for the Moderna jab.

When it comes to the Pfizer jab, there has been 60 reports of myocarditis and 42 reports of pericarditis.


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