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.
#775 most reported symptom for this vaccine
Influenza B virus test positive has been reported 40 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, 1 mentioned death (2.50%) and 4 involved hospitalization (10.0%).
Influenza B virus test positive is the #775 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.
Seeing 40 reports of Influenza B virus test positive 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), Influenza B virus test positive appears in only 0.0% of reports.
The mortality rate of 2.50% warrants monitoring, though VAERS deaths represent temporal associations, not confirmed causal links.
This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.