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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.
Irritability
10,844 total reports13.4% serious outcomes
Share
10,844
Total Reports
163
Deaths
1,285
Hospitalizations
13.4
Severity Rate
% serious outcomes
About Irritability Reports
Irritability has been reported 10,844 times in VAERS from 1990 to 2026.
Of these reports, 163 were associated with death (1.50%) and 1,285 involved hospitalization.
The overall serious outcome rate (death or hospitalization) for reports mentioning Irritability is 13.4%.
Understanding Irritability in VAERS
•Temporal association only: These reports show Irritability 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 Irritability. 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.
Most Associated Vaccines
1. HIBV3,455
2. DTAP3,151
3. PNC3,106
4. RV52,230
5. IPV2,188
6. PNC132,097
7. MMR2,085
8. VARCEL1,608
9. DTAPHEPBIP1,566
10. HEP1,362
Detailed Breakdowns
Quick Facts
Reports:10,844
Deaths:163
Hospitalizations:1,285
Mortality Rate:1.50%
Severity Rate:13.4%
Related Analysis
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Data Source
This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.