Report #2870336

Received Nov 3, 2025

A note on interpretation. VAERS reports are unverified and may be incomplete or coincidental. A report does not establish that a vaccine caused an event, and counts should not be used to calculate incidence or infer causation. Full disclaimer

Overview

Sex: Female
Age: Age unknown
State: WI
Recovered: Unknown
Vaccinated: Oct 21, 2025
Onset: Oct 21, 2025
Days to onset: 0
Hospital days: —

Vaccines (1)

Type	Name	Manufacturer	Dose	Lot	Route / Site
RSV	RSV (AREXVY)	GLAXOSMITHKLINE BIOLOGICALS	UNK	UNK	—

Symptoms (1)

Product preparation issue

Symptom narrative

Maladministration of diluent only; Maladministration of diluent only; This non-serious case was reported by a pharmacist via call center representative and described the occurrence of inappropriate preparation of medication in a 80-year-old female patient who received RSVPreF3 adjuvanted (Arexvy) for prophylaxis. On 21-OCT-2025, the patient received Arexvy. On 21-OCT-2025, an unknown time after receiving Arexvy, the patient experienced inappropriate preparation of medication (Verbatim: Maladministration of diluent only) and inappropriate dose of vaccine administered (Verbatim: Maladministration of diluent only). The outcome of the inappropriate preparation of medication and inappropriate dose of vaccine administered were not applicable. Additional Information: GSK Receipt Date:22-OCT-2025 The pharmacist reported that there was maladministration of only the diluent component for Arexvy on a patient, which led to inappropriate preparation of medication and inappropriate dose of vaccine administered. The Vaccine Administration Facility is the same as Primary Reporter.