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.
#178 most reported symptom for this vaccine
White blood cell count increased has been reported 192 times in association with Influenza, Seasonal (Flulaval Quadrivalent) vaccination in VAERS. This represents 0.4% of all 52,111 reports for this vaccine.
Among these reports, 5 mentioned death (2.60%) and 101 involved hospitalization (52.6%).
White blood cell count increased is the #178 most frequently reported symptom for Influenza, Seasonal (Flulaval Quadrivalent) out of 2354 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 192 reports of White blood cell count increased after Influenza, Seasonal (Flulaval Quadrivalent) vaccination may seem alarming, but context is critical.
The mortality rate of 2.60% 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.