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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.

Muscular weakness

20,544 total reports23.2% serious outcomes

20,544

Total Reports

192

Deaths

4,577

Hospitalizations

23.2

Severity Rate

% serious outcomes

About Muscular weakness Reports

Muscular weakness has been reported 20,544 times in VAERS from 1990 to 2026.

Of these reports, 192 were associated with death (0.93%) and 4,577 involved hospitalization.

The overall serious outcome rate (death or hospitalization) for reports mentioning Muscular weakness is 23.2%.

Understanding Muscular weakness in VAERS

•Temporal association only: These reports show Muscular weakness occurred after vaccination, not necessarily because of vaccination.

•Background rates matter: Many symptoms occur naturally at baseline rates in the population, unrelated to vaccination.

•Reporting variability: Medical terminology may be used differently by various healthcare providers and over time.

•Investigation needed: High-frequency reports may trigger further epidemiological studies to determine causation.

What This Data Shows

Most Associated Vaccines: The vaccines most frequently mentioned in reports with Muscular weakness. This may reflect usage patterns, not causation.

Severity Patterns: The percentage of reports that involve serious outcomes can help prioritize safety investigations.

Reporting Trends: Changes in reporting frequency over time may reflect increased awareness, media attention, or actual safety signals.