chills; white blood count was low,; blood pressure in the 140 range now, but he used to be 118.; fever; Shaking, freezing cold; Shaking, freezing cold; Not sleeping; Exhausted; Restlessness; Sore arm; This is a spontaneous report from a contactable consumer (patient). A 66-year-old male patient received BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Formulation: Solution for injection, Lot number: EW0182, Expiration Date: 30Aug2021), via an unspecified route of administration on 09May2021 10:45 as dose 1, single for COVID-19 immunization (at the age of 66-year-old).  Medical history included had COVID a year ago, arthralgia Just old, has joint pain, a lot of joint pain in knees, hands and shoulders, blood clots. Concomitant medication(s) included warfarin (Blood thinner for blood clots) from 2014 and ongoing; atorvastatin (LIPITOR [ATORVASTATIN]) taken for an unspecified indication. The patient experienced chills, white blood count was low, blood pressure in the 140 range now, but he used to be 118 on an unspecified date, sore arm on 09May2021, fever, shaking, freezing cold, not sleeping, exhausted, restlessness on 10May2021. It was reported that, He was administered the first dose of Pfizer Covid-19 Vaccine 09May2021 and felt fine all day, just had a sore arm. Last night he went to bed around 23:30 and by around 10May2021 at 00:00 he had onset of he couldn't stop shaking, freezing cold; restlessness; had a slight fever which would bounce between 98.9 degrees and 99 degrees; the shakes were unbelievable, he was freezing; He asked if these symptoms were normal. He felt alright, was just exhausted from not sleeping. He went to bed and experienced chills and fever. His temperature today had improved, around 98.7 or 98.8 or 98.6 degrees. Patient enquired if he wont get the second dose of the vaccine and will still be experiencing this on the second dose. Freaked him out because he had a pneumonia vaccination in 2014 and a week later was in the hospital with blood clots all the doctors said the vaccination had nothing to do with it but he was not sure he agreed with that. Patient was just old, had joint pain, a lot of joint pain in knees, hands and shoulders. Patient had COVID a year ago. He had his windows replaced, and the guy in his house was coughing and coughing, and he thought he just had a bad cold because the COVID thing wasn't really well known yet; the guy asked to use the bathroom. Patient did not know if he even wanted to get the second dose. Patient reported that, that he gets his blood checked quarterly because he took Lipitor; to make sure that it was not eating his kidneys or liver or anything. His total cholesterol blood sugar were good. He did mention his white blood count was low, not a whole lot; but he was not sure how to read the information so had no further details to provide for this report. He thought the low white blood count was from the COVID he had a year ago. 6 months after he had COVID he went to a blood specialist who he sees twice a year; he checked his blood platelets which were supposed to be at 150, but his were at 50 but it came back up on it's own. His blood pressure had always been perfect, he is in the 140 range now, but he used to be 118. After the pneumonia vaccine he had in 2014 he had 2 more pneumonia vaccinations and did not had to get any more; they said after the second of the 2 more pneumonia vaccines that he was good for life; and after those 2 pneumonia vaccines he was fine, no blood clots. The patient underwent lab tests and procedures which included blood cholesterol: normal (cholesterol blood sugar were good), blood pressure measurement: unknown (His blood pressure had always been perfect, he is in the 140 range now, but he used to be 118), body temperature: His temperature today has improved, around 98.7 or 98.8 or 98.6 degrees , platelet count decreased: unknown blood platelets which are supposed to be at 150, but his were at 50 but it came back up on it's own , sars-cov-1 test: unknown (had COVID a year ago), white blood cell count: white blood count was low all on an unspecified date in 2020. The outcome of the events chills, sore arm, white blood count was low, blood pressure in the 140 range now, but he used to be 118 was unknown, fever, exhausted, restlessness was recovering and shaking, freezing cold, not sleeping recovered with sequelae on 10May2021.  No follow-up attempts are needed; information about lot/batch number cannot be obtained.