IMMEDIATELY HOSPITALIZED; 2nd dose delayed more than 35 days,; 2nd dose interchanged; This spontaneous case was reported by a pharmacist and describes the occurrence of HOSPITALISATION (IMMEDIATELY HOSPITALIZED) in a  patient of an unknown age and gender who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.    Co-suspect product included non-company product COVID-19 VACCINE NRVV AD26 (JNJ 78436735) (JANSSEN COVID-19 VACCINE) for COVID-19 vaccination.    No Medical History information was reported.   On 04-Jan-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. In 2021, the patient started COVID-19 VACCINE NRVV AD26 (JNJ 78436735) (JANSSEN COVID-19 VACCINE) (unknown route) at an unspecified dose. In April 2021, the patient experienced INAPPROPRIATE SCHEDULE OF PRODUCT ADMINISTRATION (2nd dose delayed more than 35 days,) and INTERCHANGE OF VACCINE PRODUCTS (2nd dose interchanged). In 2021, the patient experienced HOSPITALISATION (IMMEDIATELY HOSPITALIZED) (seriousness criterion hospitalization). In April 2021, INAPPROPRIATE SCHEDULE OF PRODUCT ADMINISTRATION (2nd dose delayed more than 35 days,) and INTERCHANGE OF VACCINE PRODUCTS (2nd dose interchanged) had resolved. At the time of the report, HOSPITALISATION (IMMEDIATELY HOSPITALIZED) outcome was unknown.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) was unknown.   For mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown), the reporter did not provide any causality assessments.   No concomitant medications were reported. No treatment medications were reported.  Limited Information Adverse Event, HCP is calling with a question but mentions AE. They have a patient at different pharmacy wanting to get booster dose on 30Dec2021.Consumer received 1st dose of the moderna covid-19 vaccine on 04Jan2021 and was immediately hospitalized. Consumer did not get second dose of covid-19 vaccine until 12Apr2021. But the 2nd dose was J&J covid-19 vaccine. The AE is hospitalization, delayed 2nd dose, and 2nd dose interchanged. HCP did not have additional information because the consumer goes to their other pharmacy. Agent able to get consent for SO FO. Email Address verified.   This case concerns a patient of an unknown age and gender, with no reported medical history in this case, who experienced the serious unexpected adverse event of Hospitalisation. The event occurred in an unknown date after the administration of the first dose of the mRNA-1273 vaccine. The outcome at the time of the report was Unknown. The rechallenge could be considered unknown, as the event happened after the first dose of the vaccine. The benefit-risk relationship of the mRNA-1273 vaccine is not affected by this report.; Sender's Comments: This case concerns a patient of an unknown age and gender, with no reported medical history in this case, who experienced the serious unexpected adverse event of Hospitalisation. The event occurred in an unknown date after the administration of the first dose of the mRNA-1273 vaccine. The outcome at the time of the report was Unknown. The rechallenge could be considered unknown, as the event happened after the first dose of the vaccine. The benefit-risk relationship of the mRNA-1273 vaccine is not affected by this report.