Study From Japan: COVID-19 Vaccines Myocarditis Risk Higher Than Originally Thought

TN: Yet another study, this time in Japan, raises concerns about mRNA COVID-19 vaccine safety signals. Recently posted in the preprint server medRxiv, co-author Rokuro Hama, director of the Japan Institute of Pharmacovigilance, a Japanese post-approval monitoring agency, reports evidence of growing concern. A sophisticated operation, this Japanese group diligently pursued its mission. They report that myocarditis mortality ratios (MMRRs) and their confidence intervals (95%) after receiving the COVID-19 vaccines compared with the general reference population over the past three years were significantly higher not only among the young adult population (highest in the 30s with MMRR of 6.69) but also in the elderly.