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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. Hepatitis A + B (Twinrix)
  4. Hepatitis B surface antigen positive
Hepatitis A + B (Twinrix)×Hepatitis B surface antigen positive

Hepatitis B surface antigen positive Reports for Hepatitis A + B (Twinrix)

#193 most reported symptom for this vaccine

19
Reports
3
Deaths
1
Hospitalizations
15.79
Mortality Rate
%
5.3
Hosp. Rate
%

Hepatitis B surface antigen positive and Hepatitis A + B (Twinrix)

Hepatitis B surface antigen positive has been reported 19 times in association with Hepatitis A + B (Twinrix) vaccination in VAERS. This represents 0.4% of all 5,237 reports for this vaccine.

Among these reports, 3 mentioned death (15.79%) and 1 involved hospitalization (5.3%).

Hepatitis B surface antigen positive is the #193 most frequently reported symptom for Hepatitis A + B (Twinrix) out of 871 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 19 reports of Hepatitis B surface antigen positive after Hepatitis A + B (Twinrix) vaccination may seem alarming, but context is critical.

The 15.79% 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 Hepatitis B surface antigen positive occurred after vaccination, not that the vaccine caused it.
•Background rates: Hepatitis B surface antigen positive 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

Haematocrit decreased19 reportsMetabolic function test normal19 reportsComputerised tomogram normal19 reportsAtaxia19 reports

Quick Facts

Reports:19
Deaths:3
Hospitalizations:1
% of Vaccine:0.4%
Rank:#193 of 871

Related Pages

Hepatitis A + B (Twinrix) OverviewHepatitis B surface antigen positive (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.