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.
Mental status changes appears in 3,398 VAERS reports across all vaccines. Of these, 694 reports also mentioned death and 2,668 involved hospitalization. The severity rate (deaths + hospitalizations as a percentage of reports) is 98.9%. The top vaccines associated with this symptom are COVID19, MNQ, FLU4. Remember: VAERS reports show temporal association, not causation.
Mental status changes has been reported 3,398 times in VAERS from 1990 to 2026.
Of these reports, 694 were associated with death (20.42%) and 2,668 involved hospitalization.
The overall serious outcome rate (death or hospitalization) for reports mentioning Mental status changes is 98.9%.
This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.