feeling horrible/lay down when it gets bad. Its on/off/ Not feeling good/ One minute feel good and next minute feel bad; It's just a general feeling of tired; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 74-year-old male patient received bnt162b2 omi xbb.1.5 (COMIRNATY (2023-2024 FORMULA)), on 02Oct2023 at 10:00 as dose 1, single (Batch/Lot number: unknown) at the age of 74 years for covid-19 immunisation; influenza vaccine (FLU [INFLUENZA VACCINE]), on 02Oct2023 as dose number unknown, single (Batch/Lot number: unknown) for influenza immunisation. The patient's relevant medical history was not reported. The patient took concomitant medications. Vaccination history included: Moderna (Dose number unknown; Manufacturer Unknown/previous vaccines received of the Covid Vaccine were all manufactured by Moderna.), for Covid-19 immunization. The following information was reported: FATIGUE (non-serious) with onset 03Oct2023, outcome "not recovered", described as "It's just a general feeling of tired"; MALAISE (non-serious) with onset 03Oct2023, outcome "not recovered", described as "feeling horrible/lay down when it gets bad. Its on/off/ Not feeling good/ One minute feel good and next minute feel bad". Relevant laboratory tests and procedures are available in the appropriate section.  Additional Information: Reporter enquired about the Pfizer Covid -19 vaccine. Asked if was normal to have a reaction for one and half week after receiving the Pfizer COVID-19 vaccine. Reporter stated he was feeling horrible. He laid down when it got bad. It was on/off. He thought he had COVID. He went to do a test but it was negative. He wanted to know if its normal to have side effects for 1 week and half. The Pfizer Covid vaccine and Flu shots were administered in left shoulder. Further stated he never had reaction to any of these vaccines previously. He got the Pfizer Covid Vaccine shot 1.5 week ago and still does not feel good. Asked if it was normal not normal. Initially stated, Monday of last week got the shot and then a day or two afterwards started feeling bad. One minute feel good and next minute feel bad.  It's nothing specific. It's just a general feeling of tired and then have to lie down. Clarified started to feel bad and not feeling good on the following Tuesday, 03Oct2023.  He would get out of bed a little while. Would be okay. Then start feeling bad again and have to lie down. Concomitant Medications reported as: On a plethora of medications. Other Conditions: Have a number of medical conditions. Nothing like this and nothing need to know about. He did not have the vaccine card to provide any details regarding dates and lot number.  He also added on the same day he received the Pfizer Covid Vaccine he also got the Flu Shot. Full name of the Flu Shot unknown to reporter.  Patient had not taken any Prior Vaccinations (within 4 weeks).The events did not require visit to Emergency Room; Physician Office; and Intensive Care Unit.   The information on the batch/lot number for [BNT162B2 OMI XBB.1.5] has been requested and will be submitted if and when received.