Important: VAERS reports alone cannot determine if a vaccine caused an adverse event. Reports may contain incomplete, inaccurate, or unverified information. Correlation does not equal causation.
Convulsion appears in 14,104 VAERS reports across all vaccines. Of these, 257 reports also mentioned death and 5,268 involved hospitalization. The severity rate (deaths + hospitalizations as a percentage of reports) is 39.2%. The top vaccines associated with this symptom are HIBV, DTAP, MMR. Remember: VAERS reports show temporal association, not causation.
Convulsion has been reported 14,104 times in VAERS from 1990 to 2026.
Of these reports, 257 were associated with death (1.82%) and 5,268 involved hospitalization.
The overall serious outcome rate (death or hospitalization) for reports mentioning Convulsion is 39.2%.
This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.