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.
#270 most reported symptom for this vaccine
White blood cell count increased has been reported 160 times in association with Zoster Live (Zostavax) vaccination in VAERS. This represents 0.1% of all 140,312 reports for this vaccine.
Among these reports, 4 mentioned death (2.50%) and 60 involved hospitalization (37.5%).
White blood cell count increased is the #270 most frequently reported symptom for Zoster Live (Zostavax) out of 2827 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 160 reports of White blood cell count increased after Zoster Live (Zostavax) vaccination may seem alarming, but context is critical. With 140,312 total reports for this vaccine (representing many millions of doses), White blood cell count increased appears in only 0.1% 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.