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.
Weight decreased appears in 5,569 VAERS reports across all vaccines. Of these, 151 reports also mentioned death and 1,320 involved hospitalization. The severity rate (deaths + hospitalizations as a percentage of reports) is 26.4%. The top vaccines associated with this symptom are COVID-19, HPV (Gardasil), Flu (Trivalent). Remember: VAERS reports show temporal association, not causation.
Weight decreased has been reported 5,569 times in VAERS from 1990 to 2026.
Of these reports, 151 were associated with death (2.71%) and 1,320 involved hospitalization.
The overall serious outcome rate (death or hospitalization) for reports mentioning Weight decreased is 26.4%.
This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.