Received Apr 9, 2026
Reports are unverified and do not show that a vaccine caused an event. Full disclaimer
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| HEP | HEP B (HEPLISAV-B) | DYNAVAX TECHNOLOGIES CORPORATION | 1 | 946914 | IM / LA |
Given Engerix Instead of Second Dose of HEPLISAV-B; Initial report received on 16-Mar-2026. A healthcare professional reported that a 23-year-old male received HEPLISAV-B (hepatitis B vaccine) for the first dose of hepatitis B immunization and then received ENGERIX as the second dose. No medical history or concomitant medications were reported. On 13-Jan-2026, the patient received dose 1 of a hepatitis B vaccine [HEPLISAV-B (lot number 946914, expiration date 12-Mar-2028, and NDC number not reported)] in the left deltoid. On 13-Feb-2026, 31 days after having been vaccinated with HEPLISAV-B, there was a mix up of hepatitis vaccines and the patient was given ENGERIX-B instead of a second dose of HEPLISAV-B. No adverse events were reported. No other information was available. Company Comment: The company assessed the event as non-serious.; Sender's Comments: The company assessed the event as non-serious.
Engerix b