⚠️

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.

Muscle twitching

7,009 total reports12.3% serious outcomes

7,009

Total Reports

Deaths

825

Hospitalizations

12.3

Severity Rate

% serious outcomes

About Muscle twitching Reports

Muscle twitching has been reported 7,009 times in VAERS from 1990 to 2026.

Of these reports, 35 were associated with death (0.50%) and 825 involved hospitalization.

The overall serious outcome rate (death or hospitalization) for reports mentioning Muscle twitching is 12.3%.

Understanding Muscle twitching in VAERS

•Temporal association only: These reports show Muscle twitching 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 Muscle twitching. 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.