Received Jan 22, 2026
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| VARCEL | VARICELLA (VARIVAX) | MERCK & CO. INC. | UNK | Y01350 | — |
No additional AE; an improperly stored dose of VARIVAX was inadvertently administered to a patient; This Spontaneous report was received from a Nurse Practitioner 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 medications were not reported. On 06-Jan-2026, the patient was vaccinated with improperly stored varicella virus vaccine live (oka/merck) (VARIVAX) (0.5 ml total, lot # reported as Y01350 was an invalid lot#, expiration date reported as 02-Aug-2026; strength, anatomical location and route of administration were not provided) for prophylaxis. The vaccine was reconstituted with sterile diluent (Hollister-Stier STERILE DILUENT). It was reported that the suspect vaccine was underwent temperature excursions of 8.8 degree Fahrenheit (F) (the time frame was 1 hour 10 minutes) (product storage error). There were previous temperature excursions. No additional adverse event (AE) was reported (no adverse event).
DILUENT MRK