Epidemiology of Febrile Seizures During the Covid-19 Pandemic: A Canadian Immunization Monitoring Program–Active (IMPACT) Study

Active surveillance for febrile seizures was conducted at 12 Canadian pediatric centers (August 2021-December 2022). Of 3367 cases, 649 (19%) were hospitalized, 156/3367 (5%) had laboratory-confirmed acute SARS-CoV-2 infection, 363 (11%) had non-SARS-CoV-2 infection and 107 (3%) occurred as adverse events following immunization (vaccinated within 15 days before presentation). Febrile seizures were more frequently associated with infection than vaccination.