As a result, Moderna (NSDQ:MRNA) and Pfizer (NYSE:PFE) have agreed to expand clinical trials of their vaccines in children aged five to 11 before seeking emergency use authorization. In April, Israel first reported suspected cases of heart inflammation in recipients of the COVID-19 vaccine from Pfizer and its partner BioNTech. Since then, FDA has substantiated the risk of myocarditis,…