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.
#1187 most reported symptom for this vaccine
Gram stain negative has been reported 10 times in association with Influenza, Seasonal (Flulaval Quadrivalent) vaccination in VAERS. This represents 0.0% of all 52,111 reports for this vaccine.
Among these reports, 1 mentioned death (10.00%) and 7 involved hospitalization (70.0%).
Gram stain negative is the #1187 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 10 reports of Gram stain negative after Influenza, Seasonal (Flulaval Quadrivalent) vaccination may seem alarming, but context is critical.
The 10.00% mortality rate among these reports is elevated, but this reflects the severity of the condition itself rather than vaccine causation.
This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.