Largest multicountry COVID study links vaccines to potential adverse effects

A new study on COVID-19 vaccines that looked at nearly 100 million vaccinated individuals affirmed the vaccines’ previously observed links to increased risks for certain adverse effects including myocarditis and Guillain-Barré syndrome.

The study was conducted by the Global COVID Vaccine Safety project and took into account 99,068,901 vaccinated individuals across eight countries: Argentina, Australia, Canada, Denmark, Finland, France, New Zealand and Scotland.

The report specifically looked at adverse events following administration of the Pfizer, Moderna and AstraZeneca vaccines.