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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. DTP + Hib
  4. Subarachnoid haemorrhage
DTP + Hib×Subarachnoid haemorrhage

Subarachnoid haemorrhage Reports for DTP + Hib

#133 most reported symptom for this vaccine

16
Reports
16
Deaths
16
Hospitalizations
100
Mortality Rate
%
100
Hosp. Rate
%

Subarachnoid haemorrhage and DTP + Hib

Subarachnoid haemorrhage has been reported 16 times in association with DTP + Hib vaccination in VAERS. This represents 0.2% of all 6,892 reports for this vaccine.

Among these reports, 16 mentioned death (100.00%) and 16 involved hospitalization (100.0%).

Subarachnoid haemorrhage is the #133 most frequently reported symptom for DTP + Hib out of 303 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 16 reports of Subarachnoid haemorrhage after DTP + Hib vaccination may seem alarming, but context is critical.

The 100.00% mortality rate among these reports is elevated, but this reflects the severity of the condition itself rather than vaccine causation.

Important Context

•Association, not causation: These reports show Subarachnoid haemorrhage occurred after vaccination, not that the vaccine caused it.
•Background rates: Subarachnoid 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

Injection site swelling16 reportsDisseminated intravascular coagulation16 reportsPoliomyelitis15 reportsMydriasis15 reports

Quick Facts

Reports:16
Deaths:16
Hospitalizations:16
% of Vaccine:0.2%
Rank:#133 of 303

Related Pages

DTP + Hib OverviewSubarachnoid 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.