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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
  2. Vaccines
  3. Hib Polysaccharide
  4. Gastrointestinal haemorrhage
Hib Polysaccharide×Gastrointestinal haemorrhage

Gastrointestinal haemorrhage Reports for Hib Polysaccharide

#69 most reported symptom for this vaccine

3
Reports
0
Deaths
1
Hospitalizations
0
Mortality Rate
%
33.3
Hosp. Rate
%

Gastrointestinal haemorrhage and Hib Polysaccharide

Gastrointestinal haemorrhage has been reported 3 times in association with Hib Polysaccharide vaccination in VAERS. This represents 1.1% of all 282 reports for this vaccine.

Among these reports, 0 mentioned death (0.00%) and 1 involved hospitalization (33.3%).

Gastrointestinal haemorrhage is the #69 most frequently reported symptom for Hib Polysaccharide out of 81 total symptoms.

Disclaimer: VAERS reports describe events that occurred after vaccination but do not establish that the vaccine caused the event. Many reported symptoms may be coincidental or related to underlying conditions.

What This Means

Seeing 3 reports of Gastrointestinal haemorrhage after Hib Polysaccharide vaccination may seem alarming, but context is critical.

The mortality rate among these reports is very low at 0.00%, suggesting most cases are non-fatal.

Important Context

•Association, not causation: These reports show Gastrointestinal haemorrhage occurred after vaccination, not that the vaccine caused it.
•Background rates: Gastrointestinal haemorrhage may occur naturally at baseline rates in the population, unrelated to vaccination.
•Anyone can report: VAERS accepts reports from anyone — patients, parents, healthcare providers — without requiring medical verification.
•Denominator missing: VAERS counts reports, not rates per dose. Without knowing how many doses were given, raw counts can be misleading. Learn more →

Similarly Ranked Symptoms

Chills3 reportsPetechiae3 reportsDehydration3 reportsGastrointestinal disorder3 reports

Quick Facts

Reports:3
Deaths:0
Hospitalizations:1
% of Vaccine:1.1%
Rank:#69 of 81

Related Pages

Hib Polysaccharide OverviewGastrointestinal haemorrhage (All Vaccines)Why Raw Numbers MisleadTop Symptoms Analysis

Data Source

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