she has been sick since then/She has been sick for 6 days; headache; abdominal pain; difficulty in sleeping/could not sleep properly; fever; she received the vaccine last 15Nov2022, and at the same day, she also received the flu vaccine; she received the vaccine last 15Nov2022, and at the same day, she also received the flu vaccine; Interchange of vaccine products; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non-HCP) from medical information team. The reporter is the patient.  A 77-year-old female patient received BNT162b2, BNT162b2 omi ba.4-5 (BNT162B2, BNT162B2 OMI BA.4-5), on 15Nov2022 as dose 5 (booster), single (Lot number: GK3724) for covid-19 immunisation; influenza vaccine inact split 4v (FLUZONE HIGH DOSE QUADRIVALENT), on 15Nov2022 as dose number unknown, single (Batch/Lot number: unknown) for immunisation. The patient's relevant medical history and concomitant medications were not reported. Vaccination history included: Moderna covid vaccine (DOSE 4 (Booster), she received 4 doses of the Moderna covid vaccine), administration date: 13May2022, for Covid-19 Immunization; Moderna covid vaccine (DOSE 3 (Booster), she received 4 doses of the Moderna covid vaccine), for Covid-19 Immunization; Moderna covid vaccine (DOSE 2, she received 4 doses of the Moderna covid vaccine), for Covid-19 Immunization; Moderna covid vaccine (DOSE 1, she received 4 doses of the Moderna covid vaccine), for Covid-19 Immunization. The following information was reported: INTERCHANGE OF VACCINE PRODUCTS (non-serious) with onset 15Nov2022, outcome "unknown"; OFF LABEL USE (non-serious), PRODUCT USE ISSUE (non-serious) all with onset 15Nov2022, outcome "unknown" and all described as "she received the vaccine last 15Nov2022, and at the same day, she also received the flu vaccine"; ILLNESS (non-serious), outcome "unknown", described as "she has been sick since then/She has been sick for 6 days"; HEADACHE (non-serious), outcome "unknown"; ABDOMINAL PAIN (non-serious), outcome "unknown"; INSOMNIA (non-serious), outcome "unknown", described as "difficulty in sleeping/could not sleep properly"; PYREXIA (non-serious), outcome "unknown", described as "fever". The event "she has been sick since then/she has been sick for 6 days" required physician office visit. Relevant laboratory tests and procedures are available in the appropriate section.  Additional Information: Patient stated that she received the vaccine last 15Nov2022, and at the same day, also received the flu vaccine. Patient was told by the nurse who administered the vaccines that it was okay to receive them together, while some told her that it should not be given together. Patient added that she has been sick since then. Patient had been sick for 6 days and had visited the urgent care last Saturday where patient was tested for negative for covid. Patient further explained that she had been healthy before getting the mentioned vaccines, but she had been experiencing headache, abdominal pain, difficulty in sleeping/could not sleep properly, and fever. Patient added that she frequently used the bathroom due to the abdominal pain. Patient also mentioned that previously, received 4 doses of the Moderna covid vaccine. Patient was worried that she may die due to these SEs and that her son died from Covid, and she does not want to happen to her as well. Consumer stated, "It was good now you could talk to me, before I cannot talk and did not even get up from bed. I just eat my lunch.  No follow-up attempts are possible. No further information is expected.