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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.

Inappropriate schedule of drug administration

8,678 total reports2.2% serious outcomes

8,678

Total Reports

Deaths

167

Hospitalizations

2.2

Severity Rate

% serious outcomes

About Inappropriate schedule of drug administration Reports

Inappropriate schedule of drug administration has been reported 8,678 times in VAERS from 1990 to 2026.

Of these reports, 25 were associated with death (0.29%) and 167 involved hospitalization.

The overall serious outcome rate (death or hospitalization) for reports mentioning Inappropriate schedule of drug administration is 2.2%.

Understanding Inappropriate schedule of drug administration in VAERS

•Temporal association only: These reports show Inappropriate schedule of drug administration 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 Inappropriate schedule of drug administration. 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.