Skip to main content
VaccineWatch
VaccinesSymptomsStatesAnalysisToolsDashboardCompare

VaccineWatch

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

Explore Data

  • Vaccines
  • Symptoms
  • Manufacturers
  • States
  • Dashboard
  • Compare Tool
  • Search

Deep Dives

  • The Denominator Problem
  • Onset Timing
  • Lot Number Analysis
  • COVID Impact
  • Myocarditis
  • Death Reports
  • Interactive Tools
  • Reporting Rate Calculator
  • Signal Detection
  • All 23 Articles →

Resources

  • About
  • Methodology
  • FAQ
  • Glossary
  • Side Effects Guide
  • Vaccine Schedule
  • Vaccine Safety
  • Safety Timeline
  • Adverse Events
  • Is VAERS Reliable?
  • Myocarditis
  • Guillain-Barré
  • Allergic Reactions
  • Report an Event
  • Disclaimer
  • VAERS Official Site ↗

Sister Sites

  • OpenMedicaid
  • OpenFeds
  • OpenImmigration
  • OpenSubsidies
  • OpenSpending
  • OpenMedicare
  • OpenLobby
  • TheDataProject.ai

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.

⚠️

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 (Fluvirin)
  4. International normalised ratio
Influenza, Seasonal (Fluvirin)×International normalised ratio

International normalised ratio Reports for Influenza, Seasonal (Fluvirin)

#924 most reported symptom for this vaccine

28
Reports
0
Deaths
6
Hospitalizations
0
Mortality Rate
%
21.4
Hosp. Rate
%

International normalised ratio and Influenza, Seasonal (Fluvirin)

International normalised ratio has been reported 28 times in association with Influenza, Seasonal (Fluvirin) vaccination in VAERS. This represents 0.0% of all 119,695 reports for this vaccine.

Among these reports, 0 mentioned death (0.00%) and 6 involved hospitalization (21.4%).

International normalised ratio is the #924 most frequently reported symptom for Influenza, Seasonal (Fluvirin) out of 3021 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 28 reports of International normalised ratio after Influenza, Seasonal (Fluvirin) vaccination may seem alarming, but context is critical. With 119,695 total reports for this vaccine (representing many millions of doses), International normalised ratio appears in only 0.0% of reports.

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 International normalised ratio occurred after vaccination, not that the vaccine caused it.
•Background rates: International normalised ratio 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

Blood folate normal28 reportsDiet refusal28 reportsGlycosylated haemoglobin28 reportsDrug screen negative28 reports

Quick Facts

Reports:28
Deaths:0
Hospitalizations:6
% of Vaccine:0.0%
Rank:#924 of 3021

Related Pages

Influenza, Seasonal (Fluvirin) OverviewInternational normalised ratio (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.