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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.

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  3. Hib (Pedvaxhib)
  4. Monocyte count decreased
Hib (Pedvaxhib)×Monocyte count decreased

Monocyte count decreased Reports for Hib (Pedvaxhib)

#1614 most reported symptom for this vaccine

4
Reports
1
Deaths
3
Hospitalizations
25
Mortality Rate
%
75
Hosp. Rate
%

Monocyte count decreased and Hib (Pedvaxhib)

Monocyte count decreased has been reported 4 times in association with Hib (Pedvaxhib) vaccination in VAERS. This represents 0.0% of all 60,298 reports for this vaccine.

Among these reports, 1 mentioned death (25.00%) and 3 involved hospitalization (75.0%).

Monocyte count decreased is the #1614 most frequently reported symptom for Hib (Pedvaxhib) out of 2013 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 Monocyte count decreased after Hib (Pedvaxhib) vaccination may seem alarming, but context is critical.

The 25.00% 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 Monocyte count decreased occurred after vaccination, not that the vaccine caused it.
•Background rates: Monocyte count 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

Biopsy intestine abnormal4 reportsExposure to communicable disease4 reportsSensory loss4 reportsHair metal test4 reports

Quick Facts

Reports:4
Deaths:1
Hospitalizations:3
% of Vaccine:0.0%
Rank:#1614 of 2013

Related Pages

Hib (Pedvaxhib) OverviewMonocyte count 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.