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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. Pneumococcal (Pneumovax)
  4. CD8 lymphocytes decreased
Pneumococcal (Pneumovax)×CD8 lymphocytes decreased

CD8 lymphocytes decreased Reports for Pneumococcal (Pneumovax)

#1225 most reported symptom for this vaccine

7
Reports
3
Deaths
4
Hospitalizations
42.86
Mortality Rate
%
57.1
Hosp. Rate
%

CD8 lymphocytes decreased and Pneumococcal (Pneumovax)

CD8 lymphocytes decreased has been reported 7 times in association with Pneumococcal (Pneumovax) vaccination in VAERS. This represents 0.0% of all 71,157 reports for this vaccine.

Among these reports, 3 mentioned death (42.86%) and 4 involved hospitalization (57.1%).

CD8 lymphocytes decreased is the #1225 most frequently reported symptom for Pneumococcal (Pneumovax) out of 2065 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 7 reports of CD8 lymphocytes decreased after Pneumococcal (Pneumovax) vaccination may seem alarming, but context is critical.

The 42.86% 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 CD8 lymphocytes decreased occurred after vaccination, not that the vaccine caused it.
•Background rates: CD8 lymphocytes 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

Abdominal pain lower7 reportsCheilitis7 reportsComplement factor normal7 reportsInadequate aseptic technique in use of product7 reports

Quick Facts

Reports:7
Deaths:3
Hospitalizations:4
% of Vaccine:0.0%
Rank:#1225 of 2065

Related Pages

Pneumococcal (Pneumovax) OverviewCD8 lymphocytes 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.