Received Feb 25, 2026
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| VARCEL | VARICELLA (VARIVAX) | MERCK & CO. INC. | 4 | Y000202 | OT |
No adverse event; Inbound call from medical assistant who reported inadvertent administration of expired VARIVAX to a patient. Vaccine expired on 03JAN2026 and was administered to a patient on 23FEB2026 at 4 pm. No symptoms reported. She confirmed that there were no; This Spontaneous report was received from Medical Assistant and referred to a patient of unknown age and gender. The patient's medical history was not reported. The patient's past medications were not reported. The patient's concomitant medication included sterile diluent Solution for injection and SYRINGE (GLASS) 1.25ML LL. On 23-Feb-2026, the patient her/his fourth dose Varicella Virus Vaccine Live (Oka-Merck) lyophilisate and solvent for solution for injection (0.50 mL) (VARIVAX) total, Lot Number: Y000202, Expiration date 03-Jan-2026, via Subcutaneous (strength, anatomical location, and vaccination scheme was not reported), as Prophylaxis (Expired vaccine used). No adverse event was reported.
Sterile diluent