Higher Risk of Seizures in Toddlers Shortly After COVID-19 Vaccination: FDA Study

Researchers reported results in a new study.

A 1-year-old child receives a Pfizer COVID-19 vaccination in Seattle, Wash., on June 21, 2022. David Ryder/Getty Images

Toddlers and other young children faced a higher risk of seizures shortly after COVID-19 vaccination, according to a new study from U.S. Food and Drug Administration (FDA) researchers.

The incidence of febrile seizures was 2.5 times higher among children within a day after receiving a Moderna shot than among the same children 8 to 63 days after vaccination, the researchers said.