Jynneos vaccine was administered intradermally, past beyond use date; Jynneos vaccine was administered intradermally, past beyond use date; Case reference number US-BN-2023-000318 is a spontaneous case report initially received on 21-Feb-2023 from other health care professional via Communications (reference: USBAV23-0298) and concerns an adult male patient.  The patient's medical history and concomitant medications details were not provided.  On 06-Jan-2023, the patient was vaccinated with the first dose of Jynneos vaccine (batch number: FDP00015; expiration date: 30-Sep-2024), at a dose of 0.1 mL, at unknown site of administration, intradermally (explicitly coded as 'intradermal injection'), for smallpox/monkeypox prophylaxis.  On 03-Feb-2023, 28 days after the first dose, the patient was vaccinated with the second dose of Jynneos vaccine (batch number: FDP00015; expiration date: 30-Sep-2024), at a dose of 0.1 mL, at unknown site of administration, intradermally (explicitly coded as 'intradermal injection') with beyond use date of 26-Jan-2023 (explicitly coded as 'expired vaccine used').  At the time of this report, it was unknown if the patient experienced any adverse event due to Jynneos.  Additional information received on 22-Feb-2023 from Bavarian Nordic included local BN case ID.  This case is linked to US-BN-2023-000316, US-BN-2023-000317, US-BN-2023-000319, US-BN-2023-000320, US-BN-2023-000321, US-BN-2023-000322, US-BN-2023-000323 and US-BN-2023-000324, concerning same reporter.; Reporter's Comments: An an adult male patient was vaccinated with the first dose of Jynneos vaccine, at a dose of 0.1 mL, at unknown site of administration, intradermally, which is considered as intradermal injection, for smallpox/monkeypox prophylaxis. On 03-Feb-2023, the patient was vaccinated with the second dose of Jynneos vaccine, at a dose of 0.1 mL, at unknown site of administration, intradermally, which is considered as intradermal injection, with beyond use date of 26-Jan-2023, which is considered as expired vaccine used. At the time of this report, it was unknown if the patient experienced any adverse event due to Jynneos. Expired product administered and intradermal injection are considered as listed per company convention. The patient's medical history and concomitant medications details were not provided. Expired product administered and intradermal injection have been considered as not related to the suspect vaccine, but to a human factor. This case is considered as non-serious.; Sender's Comments: An an adult male patient was vaccinated with the first dose of Jynneos vaccine, at a dose of 0.1 mL, at unknown site of administration, intradermally, which is considered as intradermal injection, for smallpox/monkeypox prophylaxis. On 03-Feb-2023, the patient was vaccinated with the second dose of Jynneos vaccine, at a dose of 0.1 mL, at unknown site of administration, intradermally, which is considered as intradermal injection, with beyond use date of 26-Jan-2023, which is considered as expired vaccine used. At the time of this report, it was unknown if the patient experienced any adverse event due to Jynneos. Expired product administered and intradermal injection are considered as listed per company convention. The patient's medical history and concomitant medications details were not provided. Expired product administered and intradermal injection have been considered as not related to the suspect vaccine, but to a human factor. This case is considered as non-serious.