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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. Rotavirus (Rotateq)
  4. Haemoglobin decreased
Rotavirus (Rotateq)×Haemoglobin decreased

Haemoglobin decreased Reports for Rotavirus (Rotateq)

#117 most reported symptom for this vaccine

107
Reports
6
Deaths
89
Hospitalizations
5.61
Mortality Rate
%
83.2
Hosp. Rate
%

Haemoglobin decreased and Rotavirus (Rotateq)

Haemoglobin decreased has been reported 107 times in association with Rotavirus (Rotateq) vaccination in VAERS. This represents 0.4% of all 25,020 reports for this vaccine.

Among these reports, 6 mentioned death (5.61%) and 89 involved hospitalization (83.2%).

Haemoglobin decreased is the #117 most frequently reported symptom for Rotavirus (Rotateq) out of 1365 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 107 reports of Haemoglobin decreased after Rotavirus (Rotateq) vaccination may seem alarming, but context is critical.

The 5.61% 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 Haemoglobin decreased occurred after vaccination, not that the vaccine caused it.
•Background rates: Haemoglobin decreased 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 pain110 reportsCondition aggravated109 reportsChest X-ray107 reportsNo adverse effect107 reports

Quick Facts

Reports:107
Deaths:6
Hospitalizations:89
% of Vaccine:0.4%
Rank:#117 of 1365

Related Pages

Rotavirus (Rotateq) OverviewHaemoglobin decreased (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.