Numbers of Myocarditis after Pfizer Vaccine.
According to the Therapeutic Goods Administration (TGA), the likelihood of developing myocarditis or pericarditis after an mRNA vaccine remains exceedingly rare.
Australian figures at 14 November 2021, showed there had been 329 reports of likely myocarditis from approximately 23.4 million doses of Pfizer and 978,000 Moderna doses.
A further 592 cases have been identified as ‘suspected myocarditis’.
There have also been 1,370 cases of suspected pericarditis only.
The number works out at 2.1 cases per 100,000 vaccine doses.
The rates, broken down by age group, are shown here:
What is Myocarditis?
Myocarditis is usually caused by a viral infection. A severe case can weaken the heart, which can lead to heart failure, abnormal heartbeat and sudden death.
3.1 million cases of myocarditis were diagnosed worldwide in 2017 (statistics posted in Lancet, November 2018)
The majority of cases of myocarditis have no symptoms and are not diagnosed.