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.
Adverse reaction appears in 2,103 VAERS reports across all vaccines. Of these, 8 reports also mentioned death and 127 involved hospitalization. The severity rate (deaths + hospitalizations as a percentage of reports) is 6.4%. The top vaccines associated with this symptom are COVID-19, Shingles (Zostavax), Pneumococcal (PPV23). Remember: VAERS reports show temporal association, not causation.
Adverse reaction has been reported 2,103 times in VAERS from 1990 to 2026.
Of these reports, 8 were associated with death (0.38%) and 127 involved hospitalization.
The overall serious outcome rate (death or hospitalization) for reports mentioning Adverse reaction is 6.4%.
This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.