Researchers have found more evidence for the links between COVID-19 vaccination and a slight increase in the risk of certain adverse health effects, including myocarditis, pericarditis, and Guillain-Barré syndrome.
In the largest COVID-19 vaccine study conducted to date involving nearly 100 million vaccinated individuals across eight countries, researchers from the Global Vaccine Data Network - the research wing of the World Health Organization - evaluated the expected versus observed rates of 13 medical conditions that were considered "adverse events of special interest" in vaccinated individuals. These conditions included Bell's palsy, convulsions, myocarditis, pericarditis, and Guillain-Barré syndrome.
