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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.
Body temperature increased
16,993 total reports9.4% serious outcomes
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16,993
Total Reports
139
Deaths
1,464
Hospitalizations
9.4
Severity Rate
% serious outcomes
About Body temperature increased Reports
Body temperature increased has been reported 16,993 times in VAERS from 1990 to 2026.
Of these reports, 139 were associated with death (0.82%) and 1,464 involved hospitalization.
The overall serious outcome rate (death or hospitalization) for reports mentioning Body temperature increased is 9.4%.
Understanding Body temperature increased in VAERS
•Temporal association only: These reports show Body temperature increased 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 Body temperature increased. 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. COVID199,050
2. FLU31,514
3. PPV1,314
4. VARCEL1,032
5. MMR1,021
6. VARZOS975
7. TDAP927
8. HIBV912
9. PNC13840
10. DTAP785
Quick Facts
Reports:16,993
Deaths:139
Hospitalizations:1,464
Mortality Rate:0.82%
Severity Rate:9.4%
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.