In July was the first one but he did not come back for his second until yesterday; In July was the first one but he did not come back for his second until yesterday; Case reference number US-BN-2021-002306 is a spontaneous case report initially received from other health professional via regulatory authority (ID: USBAV21-0495) on 01-Oct-2021 and concerns a *63-year-old* male patient.  The patients' medical history and concomitant medication details were not provided.  On *27*-July-2021, the patient was vaccinated with the first dose of RabAvert (inactivated rabies virus vaccine; batch number: unknown), at unknown dosage regimen or route of administration, for pre-exposure. *It was confirmed that further data regarding the first dose was unavailable.*  On 30-Sep-2021, the patient was vaccinated with the second dose of RabAvert (inactivated rabies virus vaccine; batch number: *ARBA851A, expiration date: Jan-2024), in the right deltoid*, at an unknown dosage regimen or route of administration, for pre-exposure (explicitly coded as 'Inappropriate schedule of vaccine administered' and 'Missed dose').  *On 19-Oct-2021, the patient was vaccinated with the third dose of RabAvert (inactivated rabies virus vaccine; batch number: ARBA851C, expiration date: Jan-2024), in the left deltoid, at an unknown dosage regimen or route of administration, for pre-exposure.  At the time of follow up report it was *confirmed that the patient did not experience any adverse event.*  All follow-up information is blended into the case narrative above, with the latest information presented between asterisks (*).  Follow up information was received from the reporter on 21-Oct-2021: New information included patient's details (initials and age), vaccination details (exact date for the first dose; batch numbers, expiration date and anatomical location of the second dose and an additional, third dose) and confirmation that the patient did not experience any adverse event.; Reporter's Comments: The 63-year-old male patient was vaccinated with the first dose of RabAvert for pre-exposure. Reportedly, two months after the first dose, the patient was vaccinated with the second dose of RabAvert, which is considered inappropriate schedule of product administration and product dose omission issue. As reported, the patient was vaccinated with the third dose of RabAvert. The events of inappropriate schedule of product administration and product dose omission issue are considered listed per convention. The patient's medical history and concomitant medication details were not provided. No associated adverse events were reported with the reported medication errors. The causality for the events of inappropriate schedule of product administration and product dose omission issue is assessed as not related to the suspect vaccine, but to a human action. This case is considered non-serious.; Sender's Comments: The 63-year-old male patient was vaccinated with the first dose of RabAvert for pre-exposure. Reportedly, two months after the first dose, the patient was vaccinated with the second dose of RabAvert, which is considered inappropriate schedule of product administration and product dose omission issue. As reported, the patient was vaccinated with the third dose of RabAvert. The events of inappropriate schedule of product administration and product dose omission issue are considered listed per convention. The patient's medical history and concomitant medication details were not provided. No associated adverse events were reported with the reported medication errors. The causality for the events of inappropriate schedule of product administration and product dose omission issue is assessed as not related to the suspect vaccine, but to a human action. This case is considered non-serious.