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.
No adverse event appears in 142,256 VAERS reports across all vaccines. Of these, 23 reports also mentioned death and 39 involved hospitalization. The severity rate (deaths + hospitalizations as a percentage of reports) is 0.0%. The top vaccines associated with this symptom are COVID-19, Chickenpox (Varivax), HPV (Gardasil 9). Remember: VAERS reports show temporal association, not causation.
No adverse event has been reported 142,256 times in VAERS from 1990 to 2026.
Of these reports, 23 were associated with death (0.02%) and 39 involved hospitalization.
The overall serious outcome rate (death or hospitalization) for reports mentioning No adverse event is 0.0%.
This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.