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Data source: VAERS (Vaccine Adverse Event Reporting System)

Data through 2026 · Updated quarterly

Built by TheDataProject.ai · © 2026 VaccineWatch

Important: VAERS accepts reports of adverse events following vaccination. For any given report, there is no certainty that the reported event was caused by the vaccine. Reports may contain information that is incomplete, inaccurate, coincidental, or unverifiable. Most reports to VAERS are voluntary, which means they are subject to biases. This data cannot be used to determine if vaccines cause or contribute to adverse events.

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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.

  1. Home
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  3. Petechiae

Petechiae

2,981 total reports41.7% serious outcomes
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Petechiae appears in 2,981 VAERS reports across all vaccines. Of these, 206 reports also mentioned death and 1,037 involved hospitalization. The severity rate (deaths + hospitalizations as a percentage of reports) is 41.7%. The top vaccines associated with this symptom are COVID19, MMR, HIBV. Remember: VAERS reports show temporal association, not causation.

2,981
Total Reports
206
Deaths
1,037
Hospitalizations
41.7
Severity Rate
% serious outcomes

About Petechiae Reports

Petechiae has been reported 2,981 times in VAERS from 1990 to 2026.

Of these reports, 206 were associated with death (6.91%) and 1,037 involved hospitalization.

The overall serious outcome rate (death or hospitalization) for reports mentioning Petechiae is 41.7%.

Understanding Petechiae in VAERS

•Temporal association only: These reports show Petechiae 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 Petechiae. 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. COVID191,559
2. MMR511
3. HIBV445
4. HEP356
5. PNC325
6. VARCEL299
7. DTAP283
8. OPV253
9. IPV218
10. FLU3190
View all vaccines →

Detailed Breakdowns

Petechiae × COVID19 →Petechiae × MMR →Petechiae × HIBV →

Quick Facts

Reports:2,981
Deaths:206
Hospitalizations:1,037
Mortality Rate:6.91%
Severity Rate:41.7%

Related Analysis

Most Common Symptoms Analysis →Serious Outcomes Analysis →When Do Side Effects Start? →Recovery Rates Analysis →

Explore Further

Compare with Other SymptomsRead Symptoms Analysis

Data Source

This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.