Received Feb 17, 2026
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| HEPA | HEP A (VAQTA) | MERCK & CO. INC. | UNK | Y015910 | — |
No additional AE reported; the dose the patient received is actually expired at the time of administration and it had been through temperature excursions in the past.; the dose the patient received is actually expired at the time of administration and it had been through temperature excursions in the past.; A medical assistant reported that a 50-year-old patient received a pediatric dose of VAQTA rather than the adult dose.; This spontaneous report was received from an Other health professional and refers to a 50-year-old patient of unknown gender. The patient's medical history was not reported. The patient's concurrent conditions were not reported. Concomitant therapies were not reported. On 10-Feb-2026, the patient was vaccinated with an improperly stored and expired dose of Hepatitis A Vaccine, Inactivated (VAQTA) Suspension for injection, (lot #Y015910, expiration date: 06-Feb-2026) 0.5 ml, total, as prophylaxis (Product storage error and Expired product administered). The vaccine administered was pediatric dose rather than the adult dose (Underdose). The improperly stored vaccine underwent a temperature excursion of 51.31 degrees Fahrenheit (F) for 1 hour and 47 minutes and 52.33 F for 1 hour and 15 minutes without previous excursions. No adverse events were reported.