COVID-19 test: Result: Positive; COVID-19 test: Result: Positive; he started feeling feverish about 20 days; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from product quality group. The reporter is the patient.  A 77-year-old male patient received bnt162b2 omi xbb.1.5 (COMIRNATY (2023-2024 FORMULA)), on 12Oct2023 as dose 1, single (Lot number: HG6480) at the age of 77 years, in left arm for covid-19 immunisation; influenza vaccine (INFLUENZA VACCINE), on 12Oct2023 as dose number unknown, single (Batch/Lot number: unknown), in right arm for immunisation. The patient had no relevant medical history. The patient's concomitant medications were not reported. Vaccination history included: bnt162b2 (DOSE 1, Lot: EL9269, Site: In the arm), administration date: 16Feb2021, when the patient was 74-year-old, for COVID-19 immunization; bnt162b2 (DOSE 2, Lot: EN6205, Site: In the arm), administration date: 09Mar2021, when the patient was 74-year-old, for COVID-19 immunization; bnt162b2 (DOSE 3 (BOOSTER), Lot: FF2587, Expiration: 31Dec2021, Site: In the arm), administration date: 27Sep2021, when the patient was 75-year-old, for COVID-19 immunization; bnt162b2 (DOSE 4 (BOOSTER), Lot: FJ4989, Expiration: 24Jun2022, Site: In the arm), administration date: 03May2022, when the patient was 75-year-old, for COVID-19 immunization; bnt162b2;bnt162b2 omi ba.4-5 (DOSE 5 (BOOSTER), Lot: GJ2524 Bivalent, Expiration: 17Nov2022, Site: In the arm), administration date: 10Sep2022, when the patient was 76-year-old, for COVID-19 immunization; bnt162b2;bnt162b2 omi ba.4-5 (DOSE 6 (BOOSTER), Lot: GJ6743, Site: In the arm), administration date: 08May2023, when the patient was 76-year-old, for COVID-19 immunization; flu shot (DOSE NUMBER UNKNOWN, Reported that he also got his flu shot in the right arm), administration date: 10Sep2022, when the patient was 76-year-old, for Immunization. The following information was reported: PYREXIA (medically significant) with onset 31Oct2023, outcome "recovering", described as "he started feeling feverish about 20 days"; VACCINATION FAILURE (medically significant), COVID-19 (medically significant) all with onset 01Nov2023, outcome "recovering" and all described as "COVID-19 test: Result: Positive". The patient underwent the following laboratory tests and procedures: SARS-CoV-2 test: (01Nov2023) Postive; (03Nov2023) Positive, notes: weaker; (05Nov2023) Positive, notes: weaker; (10Nov2023) Positive; (13Nov2023) Negative; Weight: (unspecified date) 215-220 lbs; Body height: (unspecified date) Used to be 5ft 10in. Therapeutic measures were taken as a result of vaccination failure, covid-19, pyrexia. Clinical course: Caller is a consumer that was calling about the medication Paxlovid and reported that 2 weeks ago Tuesday, he started feeling feverish about 20 days after he had the Pfizer mRNA COVID Vaccine. He started feeling feverish and Wednesday morning his COVID test was positive right away. He called his doctor right away and asked for Paxlovid. His doctor prescribed Paxlovid and he started taking it at Noon that Wednesday (01Nov2023). After 4 doses, Thursday night he was feeling a lot better. he kept taking it and felt great. By the next Wednesday, about 2 days after he finished he was feeling good. He has not spoken to the doctor since his relapse.