General malaise; Back pain; flu like symptoms; couldn't go back to sleep; generalized muscle pain; Chills; Injection site pain; arm soreness; he did have injection site pain again and arm soreness after the second injection; This is a spontaneous report from a contactable physician (patient). A 58-year-old male patient received second dose bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, lot number: EL1203), via an unspecified route of administration in left arm on 14Jan2021 09:00 at single dose for COVID-19 immunization.  Vaccination facility type was hospital. Medical history included hypertension, high cholesterol, heart rate irregular.  Ongoing concomitant medications included metoprolol for heart rate control, telmisartan (TELMISARTAN) oral at once daily for Hypertension, rosuvastatin calcium (CRESTOR) oral at 40mg once daily for high cholesterol.  The patient received first dose bnt162b2 (Lot Number: EJ1685) at the age of 58-year-old for COVID-19 immunization and experienced injection site pain and arm was pretty sore. Reports he received the first dose of the Pfizer COVID 19 vaccine three week prior to the second dose. First states that was about 14Dec2020, but then clarified from his vaccine card, he received the first dose of the vaccine 23Dec2020 at 09:00AM in the left arm. He noticed injection site pain that lasted about two days and his arm was pretty sore. Both of these effects all completely resolved before the second dose. He received the second dose of the vaccine 14Jan2021 at 09:00 in the left arm. That night on 15Jan2021 at about 03:00AM in the morning he woke up with chills and general muscle pain, which he described as flu like symptoms. Adds he took his temperature but it was normal on 15Jan2021. He couldn't go back to sleep on 15Jan2021 so he took some Motrin. The next morning 15Jan2021 at 07:00 AM when he woke up, he felt okay but then in the late afternoon he started to feel the pain in his back and chills. He took Motrin and his pain and chills were gone after four or five hours. Adds it seemed like it took awhile for the Motrin to have an effect that time.  Then the third day 16Jan2021, he had the same back pain and chills. He took Motrin and the pain and chills went away after 2 hours. The fourth day he only felt mild muscle pain in his back and just a little chills. He took Motrin again and it went away pretty quickly. Clarified he took Motrin at 16:00 and his pain had gone away by 16:30. He was fine by 19:00PM that evening. Adds he felt general muscle pain starting the first night he woke up and continuing with the back pain but each day all his symptoms got milder. The generalized muscle pain was minimal yesterday. He was still sore but not as bad. All of his symptoms are gone now; so far today he has not had any symptoms of the effects he reported. Adds he did have injection site pain again and arm soreness (Jan2021) after the second injection but it resolved completely by the next day (15Jan2021) after the second dose and was not as bad. Adds he felt a generalized malaise from the time he woke up on 15Jan2021 at 03:00AM after the second dose that has completely resolved when all his other symptoms resolved yesterday (17Jan2021). No any AEs require a visit to physician or ER. Therapeutic measures were taken as a result of the events. The outcome of events Injection site pain and arm soreness was recovered on 15Jan2021. The outcome of other events was recovered on 17Jan2021. Relatedness of drug to reaction(s)/event(s) was reported related.