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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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  2. Vaccines
  3. Pneumococcal (Prevnar)
  4. Platelet count increased
Pneumococcal (Prevnar)×Platelet count increased

Platelet count increased Reports for Pneumococcal (Prevnar)

#174 most reported symptom for this vaccine

86
Reports
2
Deaths
59
Hospitalizations
2.33
Mortality Rate
%
68.6
Hosp. Rate
%

Platelet count increased and Pneumococcal (Prevnar)

Platelet count increased has been reported 86 times in association with Pneumococcal (Prevnar) vaccination in VAERS. This represents 0.3% of all 27,970 reports for this vaccine.

Among these reports, 2 mentioned death (2.33%) and 59 involved hospitalization (68.6%).

Platelet count increased is the #174 most frequently reported symptom for Pneumococcal (Prevnar) out of 1407 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 86 reports of Platelet count increased after Pneumococcal (Prevnar) vaccination may seem alarming, but context is critical.

The mortality rate of 2.33% warrants monitoring, though VAERS deaths represent temporal associations, not confirmed causal links.

Important Context

•Association, not causation: These reports show Platelet count increased occurred after vaccination, not that the vaccine caused it.
•Background rates: Platelet count increased 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

Gastrooesophageal reflux disease89 reportsNausea89 reportsCSF culture negative85 reportsRhinitis84 reports

Quick Facts

Reports:86
Deaths:2
Hospitalizations:59
% of Vaccine:0.3%
Rank:#174 of 1407

Related Pages

Pneumococcal (Prevnar) OverviewPlatelet count increased (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.