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.
Local swelling appears in 4,321 VAERS reports across all vaccines. Of these, 2 reports also mentioned death and 189 involved hospitalization. The severity rate (deaths + hospitalizations as a percentage of reports) is 4.4%. The top vaccines associated with this symptom are Flu (Trivalent), Pneumococcal (PPV23), Tdap. Remember: VAERS reports show temporal association, not causation.
Local swelling has been reported 4,321 times in VAERS from 1990 to 2026.
Of these reports, 2 were associated with death (0.05%) and 189 involved hospitalization.
The overall serious outcome rate (death or hospitalization) for reports mentioning Local swelling is 4.4%.
This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.