he felt “flu-ish” for a day or two; This spontaneous case was reported by a patient family member or friend and describes the occurrence of INFLUENZA LIKE ILLNESS (he felt “flu-ish” for a day or two) in a male patient of an unknown age who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 008B21A) for COVID-19 prophylaxis. No Medical History information was reported. On 27-Mar-2021, the patient received dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On an unknown date, the patient experienced INFLUENZA LIKE ILLNESS (he felt “flu-ish” for a day or two). At the time of the report, INFLUENZA LIKE ILLNESS (he felt “flu-ish” for a day or two) had resolved. The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) was unknown. No concomitant medications were reported. No treatment medications were reported. This case was linked to US-MODERNATX, INC.-MOD-2022-467516 (E2B Linked Report).; Sender’s Comments: US-MODERNATX, INC.-MOD-2022-467516:Reporter’s case