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Transparent access to VAERS data for informed decision-making. We present the data as-is, with appropriate context and disclaimers.

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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 B (Engerix-B)
  4. Cytomegalovirus test
Hepatitis B (Engerix-B)×Cytomegalovirus test

Cytomegalovirus test Reports for Hepatitis B (Engerix-B)

#1945 most reported symptom for this vaccine

4
Reports
0
Deaths
3
Hospitalizations
0
Mortality Rate
%
75
Hosp. Rate
%

Cytomegalovirus test and Hepatitis B (Engerix-B)

Cytomegalovirus test has been reported 4 times in association with Hepatitis B (Engerix-B) vaccination in VAERS. This represents 0.0% of all 73,280 reports for this vaccine.

Among these reports, 0 mentioned death (0.00%) and 3 involved hospitalization (75.0%).

Cytomegalovirus test is the #1945 most frequently reported symptom for Hepatitis B (Engerix-B) out of 2382 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 4 reports of Cytomegalovirus test after Hepatitis B (Engerix-B) 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 Cytomegalovirus test occurred after vaccination, not that the vaccine caused it.
•Background rates: Cytomegalovirus test 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

Complement factor C44 reportsEyelid disorder4 reportsRubella antibody test4 reportsGlucose tolerance impaired4 reports

Quick Facts

Reports:4
Deaths:0
Hospitalizations:3
% of Vaccine:0.0%
Rank:#1945 of 2382

Related Pages

Hepatitis B (Engerix-B) OverviewCytomegalovirus test (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.