Numerous series of myocarditis following the second jab of an mRNA vaccine have been published in leading peer-reviewed journals. The common theme is that young men develop myocarditis within 3-5 days after the second jab, most have severe chest pain, elevated troponins suggesting heart muscle cellular damage, ECG changes, signs of heart inflammation on cardiac MRI, and reduced left ventricular ejection fraction on 2 D echocardiogram. One patient had an ejection fraction as low as 35%. All these patients needed hospitalisation. The researchers report that number of cases was much greater than normally observed.
The verdict however is that myocarditis is “rare”, “mild” and the benefits of vaccination outweigh the risks in children.
Against this background, we have a news report in the Times of Israel that more than 75 schoolchildren have contracted (delta) Covid 19; it began with one schoolchild getting infected by a vaccinated relative, who in turn got infected by a vaccinated person returning from the UK.
The Israeli government may reimpose restrictions starting next week. The moot point is whether vaccines are ineffective against Delta or whether the Israeli government wants to motivate more people to get vaccinated, especially children.