High fever and extreme Chills; I did take Tylenol and it did not work; have extreme chills; Dizziness; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non-HCP). The reporter is the patient.  A 61-year-old male patient received BNT162b2 (BNT162B2), as dose 4 (booster), single (Lot number: FK9895) at the age of 61 years intramuscular for covid-19 immunisation. The patient's relevant medical history included: "Blood pressure high" (unspecified if ongoing). Concomitant medication(s) included: LISINOPRIL AND HYDROCHLOROTHIAZIDE taken for hypertension; ATORVASTATIN; METFORMIN HCL. Vaccination history included: BNT162b2 (Dose 1 , First dose LOT:EL3247), administration date: 21Jan2021, when the patient was 60-year-old, for covid 19 immunization; Bnt162b2 (Dose 2, Second dose LOT:EN6207), when the patient was 60 years old, for covid 19 immunization; Bnt162b2 (Dose 3, Third dose LOT:FF2588), when the patient was 60 years old, for covid 19 immunization. The following information was reported: PYREXIA (non-serious), outcome "unknown", described as "High fever and extreme Chills; I did take Tylenol and it did not work"; CHILLS (non-serious), outcome "unknown", described as "have extreme chills"; DIZZINESS (non-serious), outcome "unknown". Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of pyrexia, chills, dizziness. Additional information: Reaction / Event as Reported by the Primary Source for Translation: I had trouble with all four doses of COVID-19 Vaccine; I was sick this week . Reaction / Event as Reported by the Primary Source for Translation: High fever and extreme Chills; I did take Tylenol and it did not work. Characterization of drug role: CONCOMITANT. Medicinal Product Name as Reported by the Primary Source: Lisinopril, Hydrochlorothiazide .Additional information on drug: Additional Information for Other medicines Lisinopril, Hydrochlorothiazide: Dose: Consumer stated, "I think it is 10-12.5 mg tablets once a day." Characterization of drug role: CONCOMITANT Medicinal Product Name as Reported by the Primary Source: Metformin HCl. Additional information on drug: Additional Information for Other medicines Metformin HCl: Consumer stated, "I take Metformin HCL which is an extended release, I take two in the morning and two in the evening." Is report related to a study or programme? No. Reason for no lot number: of Tylenol: Other: Consumer stated, "I do not have that information. It was an extra strength Tylenol and that was 500 mg." Additional Context: Consumer stated, "I have had trouble with my Pfizer COVID shot and I did not give the web address to the first person that I gave out, would I rather need to speak with you or get on the web address and give my information." (Previously Department where consumer firstly called in not clarified hence by default report captured as initial report in the tab). Vaccine name: Pfizer, COVID-19 Vaccine. When paraphrased the concern, consumer stated, "Yes, I actually have just learned that this number existed, I had both of my original Pfizer shots, my first booster and my second booster and I had trouble with all four shots (Pfizer, COVID-19 Vaccine)." When probed for consumer's age at the time event started, consumer stated, "I was 60 at the first shot, second shot, third shot and 61 at the fourth shot."  First dose Vaccination date, consumer stated, "It was the January 21st 2021.".First dose LOT#EL3247 (Captured in the tab).Second dose LOT#EN6207 .Third dose LOT#FF2588. Fourth dose LOT# FK9895. When probed for the adverse event, consumer stated, "It was almost identical with all four shots, after I received the shots, usually about 6 to 7 hours later I would get high fever, and I will have extreme chills and feeling of dizziness." When probed for vaccination Anatomical site, consumer stated, "I can't remember the first three shots where I received but it was in my arm on the right hand side for my last shot up towards my shoulder and so it was in the same spot but maybe the other arm." When probed if still experiencing the events after the treatment, consumer stated, "I did take Tylenol and it did not work." Any Prior vaccination (within 4 weeks): No. When probed for vaccination timings, consumer stated, "Most of them were made around lunch time mid-day. I know the last one was made at 10 AM but the other three were made at approximately 12 o'clock." Vaccination Route of administration: Intramuscular.  Follow-up (20Apr2022): Follow-up attempts are completed. No further information is expected. No follow-up attempts are possible. No further information is expected.