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Transparent access to VAERS data for informed decision-making. We present the data as-is, with appropriate context and disclaimers.

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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. Influenza, Seasonal (Fluad Quadrivalent)
  4. Positive airway pressure therapy
Influenza, Seasonal (Fluad Quadrivalent)×Positive airway pressure therapy

Positive airway pressure therapy Reports for Influenza, Seasonal (Fluad Quadrivalent)

#276 most reported symptom for this vaccine

9
Reports
5
Deaths
8
Hospitalizations
55.56
Mortality Rate
%
88.9
Hosp. Rate
%

Positive airway pressure therapy and Influenza, Seasonal (Fluad Quadrivalent)

Positive airway pressure therapy has been reported 9 times in association with Influenza, Seasonal (Fluad Quadrivalent) vaccination in VAERS. This represents 0.2% of all 4,184 reports for this vaccine.

Among these reports, 5 mentioned death (55.56%) and 8 involved hospitalization (88.9%).

Positive airway pressure therapy is the #276 most frequently reported symptom for Influenza, Seasonal (Fluad Quadrivalent) out of 673 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 9 reports of Positive airway pressure therapy after Influenza, Seasonal (Fluad Quadrivalent) vaccination may seem alarming, but context is critical.

The 55.56% 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 Positive airway pressure therapy occurred after vaccination, not that the vaccine caused it.
•Background rates: Positive airway pressure therapy 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

Atelectasis9 reportsLung consolidation9 reportsHyponatraemia9 reportsAnosmia9 reports

Quick Facts

Reports:9
Deaths:5
Hospitalizations:8
% of Vaccine:0.2%
Rank:#276 of 673

Related Pages

Influenza, Seasonal (Fluad Quadrivalent) OverviewPositive airway pressure therapy (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.