Report #2836458

Received Apr 17, 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: Unknown
Age: Age unknown
State: IA
Recovered: Unknown
Vaccinated: Apr 4, 2025
Onset: Apr 4, 2025
Days to onset: 0
Hospital days: —

Vaccines (1)

Type	Name	Manufacturer	Dose	Lot	Route / Site
HEP	HEP B (RECOMBIVAX HB)	MERCK & CO. INC.	UNK	X021478	—

Symptoms (2)

No adverse eventUnderdose

Symptom narrative

No symptoms; pediatric dose of RECOMBIVAX HB was administered to an adult patient in error; This spontaneous report was received from a licensed practical nurse (LPN) concerning an adult patient of unspecified gender. The patient's medical history, concurrent conditions, concomitant therapies and drug reactions/allergies were not reported. On 04-Apr-2025, the patient was vaccinated in error by a healthcare professional with a pediatric dose of Hepatitis B Vaccine (Recombinant) (RECOMBIVAX HB) 5 mcg/0.5 mL pre-filled syringe, lot #X021478, expiration date reported as 29-Nov-2025 but upon internal verification established as 18-May-2026, 1 dosage form (dosage regimen, anatomical location and route of administration were not provided) administered as prophylaxis (accidental underdose). It was reported that patient was intending to get Hepatitis b vaccine rHBsAg (yeast) (HEPLISAV B) vaccine. There were no symptoms (no adverse event.)