Headache/ massive headache; Chills/ Shivers; Some fever 98.6/ temperature probably went up to 98-99; bodyaches; sore arm; This is a spontaneous report from a contactable consumer (patient himself, a dental hygienist, who worked in a dental office). A 39-year-old male patient received the first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection; lot number: EL9262, expiration date was unknown), intramuscularly on the left arm on 25Jan2021 at 08:15 at a single dose for COVID-19 immunization. The vaccine facility type was reported as the hospital, a public hospital. The vaccine was not administered at the military facility. Relevant medical history included ongoing migraines, which had been going on since he was in 20's, (condition began around 20 years prior reporting); allergies to pollen, grass, and dust; ongoing high blood pressure (HBP), which was diagnosed maybe about 6 years prior reporting; ongoing seasonal allergy, which started also in his 20's (around 20 years ago); slight shrimp allergy; tested positive for COVID-19 on 10Dec2020 (also reported as a month and a half ago); and diuresis. Concomitant medications included ongoing losartan (tablet; lot number: unknown, expiry date: 30Apr2022) for high blood pressure; ongoing hydrochlorothiazide (tablet; discard after date: 23Dec2021) as water pill; cetirizine hydrochloride (ZYRTEC); ongoing cetirizine hydrochloride (ALLERTEC) for allergy; ongoing ascorbic acid (ESTER-C) for vitamin C supplementation; ongoing ascorbic acid, betacarotene, biotin, calcium carbonate, calcium pantothenate, chromic chloride, colecalciferol, copper sulfate, cyanocobalamin, dl-alpha tocopheryl acetate, folic acid, magnesium oxide, manganese sulfate, nicotinamide, phytomenadione, potassium iodide, pyridoxine hydrochloride, retinol acetate, riboflavin, sodium molybdate, sodium selenate, thiamine mononitrate, zinc oxide (NATURE MADE MULTI FOR HIM 50+, Tablet; lot number: 2393606, expiry date: Aug2022) as multivitamin that he only took once daily - supposed to take it twice daily, but they were big so he just takes one); ongoing chondroitin sulfate, glucosamine hydrochloride, hyaluronic acid (SCHIFF GLUCOSAMINE CHONDROITIN COMPLEX, "Schiff Move Free Joint Health," also says "advanced with glucosamine and chondroitin") as dietary supplement; and unspecified multivitamins. The patient had no prior vaccinations within 4 weeks. On 25Jan2021 at 17:00, the patient experienced headache, chills, some fever at 98.6, and body aches. It was further reported that the patient felt fine all day on 25Jan2021; he just had the sore arm. Mid afternoon, around 5pm, he started getting the shivers. He had a fever. The main thing was the chills and body aches. His temperature probably went up to 98-99. He also had a massive headache. He still had the headache at the time of the report, but it was not as bad. The patient stated he took ibuprofen (ADVIL) and took some dextromethorphan hydrobromide, doxylamine succinate, paracetamol, pseudoephedrine hydrochloride (NYQUIL, clarified as " Up and Up Brand Nighttime Cold and Flu" with lot number: 0EK0993, expiry date: Apr2022) last night. At the time of the report, he had taken 2 Advil's and some dextromethorphan hydrobromide, paracetamol, phenylephrine hydrochloride (DAYQUIL, clarified as " Up and Up brand Daytime Cold and Flu" with lot number: 0EK0735, expiry date: Sep2021). He had been drinking water and tea. He was okay at the time of the report. He still had a headache. When the effectiveness of the medication went away, his fever came back and his headache got more intense. He still had body aches, but they were little better after taking the medication. The adverse events (AEs) did not require any visit to an emergency room or a physician office. Therapeutic measures were taken as a result of headache, chills, some fever at 98.6, and body aches. The patient was not tested for COVID post vaccination. The patient was not recovered from all the events.