Vaccine safety counterpoints
Other recent studies and reviews conclude vaccines do not raise sudden‑death risk in healthy young people and that vaccine effectiveness reduces the risk of long COVID by a large margin (papers cite VE figures and 32–68.7% ranges against post‑COVID conditions). A controversial youth myocarditis report claimed cases were observed only in vaccinated children, but mainstream analyses emphasize absolute vs. relative risk and call for stratified evaluation. ( )
A population-based case‑control study published in PLOS Medicine examined 6.4 million Ontario residents aged 12–50 between 1 April 2021 and 30 June 2023, identified 4,963 sudden deaths (median age 36, 74.4% male) and reported vaccinated people had 43% lower adjusted odds of sudden death than unvaccinated peers. (journals.plos.org) A systematic review and meta‑analysis that pooled 32 studies and 775,931 people estimated a pooled diagnostic odds ratio of 0.680 and calculated an overall vaccine effectiveness (VE) of 32.0% (95% CI 11.5–47.7%) versus post‑COVID conditions, with VE of 36.9% after two doses and 68.7% after three doses. (cambridge.org) A viral report claiming myocarditis occurred “only” in vaccinated children has been debunked by fact‑checks and peer‑reviewed work showing myocarditis cases follow both infection and vaccination; USA Today labeled the exclusive‑vaccine claim false while population studies explicitly compared vaccinated, unvaccinated and infected cohorts. (usatoday.com) Surveillance data show myocarditis after mRNA doses is rare but concentrated in young males (reporting rates after a second BNT162b2 dose: ~70.7 per million for males 12–15 and 105.9 per million for males 16–17), whereas some analyses find myocarditis risk after SARS‑CoV‑2 infection can be substantially higher. (jamanetwork.com) A large English cohort analysis translated risks into excess cases per 100,000 and found SARS‑CoV‑2 infection added ~2.24 myocarditis/pericarditis cases per 100,000 children over six months versus ~0.85 extra cases per 100,000 after vaccination, underpinning calls to evaluate absolute risks by age, sex, dose and timing. (bmj.com) Public‑health bodies and reviewers stress remaining uncertainties: the ECDC and multiple systematic reviews call for harmonised PCC/long‑COVID definitions and more stratified, comparative studies, and the PLOS Medicine authors cautioned the observed lower sudden‑death odds in vaccinated people may not imply causation. (ecdc.europa.eu)
