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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. Pneumococcal (Prevnar13)
  4. Bronchiolitis
Pneumococcal (Prevnar13)×Bronchiolitis

Bronchiolitis Reports for Pneumococcal (Prevnar13)

#344 most reported symptom for this vaccine

49
Reports
0
Deaths
27
Hospitalizations
0
Mortality Rate
%
55.1
Hosp. Rate
%

Bronchiolitis and Pneumococcal (Prevnar13)

Bronchiolitis has been reported 49 times in association with Pneumococcal (Prevnar13) vaccination in VAERS. This represents 0.1% of all 33,058 reports for this vaccine.

Among these reports, 0 mentioned death (0.00%) and 27 involved hospitalization (55.1%).

Bronchiolitis is the #344 most frequently reported symptom for Pneumococcal (Prevnar13) out of 1920 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 49 reports of Bronchiolitis after Pneumococcal (Prevnar13) 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 Bronchiolitis occurred after vaccination, not that the vaccine caused it.
•Background rates: Bronchiolitis 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

Culture negative49 reportsEpistaxis49 reportsVaccination site rash49 reportsHypopnoea49 reports

Quick Facts

Reports:49
Deaths:0
Hospitalizations:27
% of Vaccine:0.1%
Rank:#344 of 1920

Related Pages

Pneumococcal (Prevnar13) OverviewBronchiolitis (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.