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Report #2883708

Received Feb 2, 2026

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
21 yrs
State
ND
Recovered
Unknown
Vaccinated
—
Onset
—
Days to onset
—
Hospital days
—

Vaccines (1)

TypeNameManufacturerDoseLotRoute / Site
TDTD ADSORBED (TENIVAC)SANOFI PASTEURUNKU7920AAOT

Symptoms (2)

Expired product administeredNo adverse event

Symptom narrative

inadvertently administering an expired tenivac to a patient with no reported adverse event; Initial information received on 28-Jan-2026 regarding an unsolicited valid non-serious case received from a other health professional. This case involves a 21 years old female patient who was inadvertently administered an expired Diphtheria-2/Tetanus-5 Adsorbed Toxoids No Preservative Adult [Tenivac], with no reported adverse event. The patient's past medical history, medical treatment(s), vaccination(s) and family history were not provided. On an unknown date, the patient received an expired 0.5mL of suspect Diphtheria-2/Tetanus-5 Adsorbed Toxoids No Preservative Adult, Suspension for injection (lot U7920AA, expiry date 25-Oct-2025, frequency once and strength standard) via intramuscular route in unknown administration site for Immunization, with no reported adverse event (expired product administered) (latency same day). It was reported "Caller stated that the will offer to repeat the dose, but they were wondering about the efficacy of the expired dose and what they could tell the patient." Action taken was not applicable. This suspected adverse reaction report is submitted and classified as a medication error solely and exclusively to ensure the marketing authorization holder's compliance with the requirements set out in the Directive 2001/83/EC and Module VI of the Good Pharmacovigilance Practices. The classification as a medical error is in no way intended, nor should it be interpreted or construed as an allegation or claim made by the marketing authorization holder that any third party has contributed to or is to be held liable for the occurrence of this medication error.