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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.
Blood test
30,290 total reports25.3% serious outcomes
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30,290
Total Reports
242
Deaths
7,420
Hospitalizations
25.3
Severity Rate
% serious outcomes
About Blood test Reports
Blood test has been reported 30,290 times in VAERS from 1990 to 2026.
Of these reports, 242 were associated with death (0.80%) and 7,420 involved hospitalization.
The overall serious outcome rate (death or hospitalization) for reports mentioning Blood test is 25.3%.
Understanding Blood test in VAERS
•Temporal association only: These reports show Blood test 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 Blood test. 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. COVID1930,348
2. VARZOS1,374
3. FLU31,335
4. HPV41,261
5. COVID19-2637
6. FLU4627
7. UNK604
8. PPV599
9. TDAP578
10. FLUX491
Detailed Breakdowns
Quick Facts
Reports:30,290
Deaths:242
Hospitalizations:7,420
Mortality Rate:0.80%
Severity Rate:25.3%
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.