A study has found there is a "probable link" after receiving the second dose of the Pfizer vaccine that men have suffered from myocarditis.
Health officials are looking further to see if myocarditis can be caused by the Moderna jab against coronavirus, as it uses the same technology.
Myocarditis is a heart condition and is said to affect young men between the age of 16 and 30.
Israel saw 275 cases of myocarditis reported from December 2020 to May 2021 through 5 million vaccinated people.
It has not been proven if myocarditis is caused by the vaccination but statistics have shown even if it was, the chances of suffering from the heart condition are extremely rare, at around 55 people out of one million.
According to Reuters, Pfizer confirmed in a statement after being made aware of Israel’s cases that no "causal link" had been established between the vaccine and myocarditis.
The European Medicines Agency (EMA) said it was "aware" of myocarditis developing after the vaccination.
Further adding there is "no indication at the moment these cases are due to vaccination".
Speaking further over the concerns of the link between the vaccine and myocarditis, MHRA, the medicine regulator in the UK said in April: "Currently no new safety concerns raised regarding myocarditis," indicating that the condition had not been raised as an issue in the UK from any vaccinations distributed.
However, officials in the US are said to be investigating a link between Moderna and Pfizer jabs in young people and myocarditis. The Centers for Disease Control and Prevention (CDC) stated that cases were appearing in young men 16 years or over.
Despite this, the chances of suffering from myocarditis are still very low and CDC is still encouraging people to receive the covid vaccine as it is the best way to protect themselves from Covid.
An advisory group for CDC is asking for more research to take place into the side effects of vaccines such as Pfizer and Moderna. These are mRNA vaccines, the technology being around for years but it is the first time they have ever been used on humans.
What is Myocarditis and the symptoms to look out for?
Myocarditis is a heart condition that is an inflammation of the heart muscle, known as myocardium.
The mayo clinic says “Myocarditis can affect your heart muscle and your heart's electrical system, reducing your heart's ability to pump and causing rapid or abnormal heart rhythms (arrhythmias)”.
In some cases, the heart condition can become serious but cases found from the Pfizer jab appear to be mild.
Around 95% of cases experienced a mild form of the heart condition, spending no longer than four days in the hospital for treatment.
Some Myocarditis cases can improve on their own without any treatment needed.
The Mayo Clinic says: "In mild cases, persons should avoid competitive sports for at least three to six months. Rest and medication to help your body fight off the infection causing myocarditis might be all you need."
It can be found most commonly in young men from 16 to 30 years old, particularly those under 20.
There are five key symptoms to look out for that are caused by Myocarditis.
- Chest pain
- Rapid or abnormal heart rhythms (arrhythmias)
- Shortness of breath, when resting or during physical activity
- Fluid retention with swelling of the legs, ankles and feet
Other signs can also include symptoms of a viral infection, such as a headache, body aches, joint pain, fever, a sore throat, or diarrhoea.
If you experience any of these symptoms of myocarditis, contact your local GP or doctor, particularly if you experience chest pain or shortness of breath.
With no direct confirmation that the Pfizer jab is the main cause of Myocarditis the vaccination is still being distributed and people are urged to get their Covid vaccination when eligible to do so.
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