breaking into shivers like she was at the north pole and she could not get warm, it was like an internal earthquake; breaking into shivers like she was at the north pole and she could not get warm, it was like an internal earthquake; Then the heat turned on; for 4 hours she was burning up and sweating; Then the heat turned on; for 4 hours she was burning up and sweating / I would go in to sweat like a fever in sweat for another 4 hours; extremely tired; her arm hurts / soreness in the arm; had a headache that she had never had before unlike any other; nauseated; flu like discomfort; 4 hours like scarlet fever; Upset stomach; I would be weak; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  An 80-year-old female patient received BNT162b2 (BNT162B2), on 18May2022 as dose 4 (booster), single (Lot number: FM0173) at the age of 79 years for covid-19 immunisation. The patient's relevant medical history included: "I am over weight" (unspecified if ongoing), notes: I am over weight; "blood pressure" (ongoing), notes: I take blood pressure pill (Losartan); "reflux" (ongoing), notes: something for reflux, Omeprazole. Concomitant medication(s) included: LOSARTAN taken for blood pressure abnormal; OMEPRAZOLE taken for gastrooesophageal reflux disease. Vaccination history included: BNT162b2 (DOSE 1, SINGLE, Lot#: EN6202), administration date: 28Feb2021, when the patient was 78-year-old, for COVID-19 immunization, reaction(s): "her arm was sore", "a little fatigue"; BNT162b2 (DOSE 2, SINGLE, Lot: EN6206), administration date: 21Mar2021, when the patient was 78-year-old, for COVID-19 immunization, reaction(s): "her arm was sore", "a little fatigue"; BNT162b2 (DOSE 3 (BOOSTER), SINGLE, Lot#: 3012SBA), administration date: 07Oct2021, when the patient was 78-year-old, for COVID-19 Immunization, reaction(s): "breaking into shivers like she was at the north pole and she could not get warm, it was like an internal earthquake", "breaking into shivers like she was at the north pole and she could not get warm, it was like an internal earthquake", "breaking into shivers like she was at the north pole and she could not get warm, it was like an internal earthquake", "Then the heat turned on; for 4 hours she was burning up and sweating", "Then the heat turned on; for 4 hours she was burning up and sweating", "extremely tired", "her arm hurts/soreness in the arm", "had a headache that she had never had before unlike any other", "Nauseated", "flu like discomfort", "suffered upset stomach", "Weak", "4 hours like scarlet fever".  The following information was reported: CHILLS (non-serious), outcome "recovering", FEELING COLD (non-serious), outcome "unknown" and all described as "breaking into shivers like she was at the north pole and she could not get warm, it was like an internal earthquake"; BURNING SENSATION (non-serious), outcome "unknown", described as "Then the heat turned on; for 4 hours she was burning up and sweating"; HYPERHIDROSIS (non-serious), outcome "unknown", described as "Then the heat turned on; for 4 hours she was burning up and sweating / I would go in to sweat like a fever in sweat for another 4 hours"; FATIGUE (non-serious), outcome "unknown", described as "extremely tired"; PAIN IN EXTREMITY (non-serious), outcome "unknown", described as "her arm hurts / soreness in the arm"; HEADACHE (non-serious), outcome "recovered", described as "had a headache that she had never had before unlike any other"; NAUSEA (non-serious), outcome "unknown", described as "nauseated"; INFLUENZA LIKE ILLNESS (non-serious), outcome "unknown", described as "flu like discomfort"; SCARLET FEVER (non-serious), outcome "unknown", described as "4 hours like scarlet fever"; ABDOMINAL DISCOMFORT (non-serious), outcome "unknown", described as "Upset stomach"; ASTHENIA (non-serious), outcome "unknown", described as "I would be weak". Therapeutic measures were taken as a result of headache, nausea.  Additional information: The caller stated she had taken all of the Pfizer Covid vaccine shots, the primary and all the boosters. She stated it had been about 5 months since her last booster dose. She stated she was the only one her age that had her age that had the reactions she did and she read in the fact sheets and it said mild symptoms and she did not thought her symptoms were mild. Because of her reaction she was reluctant to take the next dose and wanted someone to tell her but the CDC and the doctors do not help. She stated she received the first two shots, no problem, the only major thing was a little fatigue and her arm was sore. She stated the booster dose, problem: She got the vaccine at noon and went and ran errands and at 10:00, she started breaking into shivers like she was at the north pole and she could not get warm, it was like an internal earthquake. Then the heat turned on; for 4 hours she was burning up and sweating. The next day the shivers and heat subsided and she was extremely tired and of course her arm hurts, it always hurts after. She had a headache that she had never had before unlike any other. She was also nauseated. Her headache subsided after she took Tylenol. The flu like discomfort lasted about a week. The next time (next booster dose)- she got the vaccine at noon, ran errands and at 10:00 almost to the point it all happened again. The third time (next booster dose), it happened again. She stated she does not consider 4 hours of shivering mild, 4 hours like scarlet fever. She had a healthy body. For her body to go into that state seemed rather extreme. She had read that fact sheet and all she was getting was okay thanks, for nothing. She wish some people at Pfizer would be like here were more severe side effects that may occur. After providing that there were some more severe side effects listed like allergic reactions she stated she did not see that in the fact sheet. The caller stated she already reported this and provided the previous agent with all the numbers for each vaccine and all of the information regarding this. The caller wanted to know if she should receive the next booster after all of this? She wanted someone to tell her whether these side effects were more than "mild." She wanted to know who can determine this for her? She doesn't know if there is a long term side effect or what it is doing to her body. The consumer stated that she had all her initial shots and all the boosters and so she thought it's then time she should get another one they say you get another one, right? You keep getting them if you are 80 but or do you stop getting them? The consumer stated that she got the Pfizer shot for the COVID- 19, she did not know what it's called. When paraphrased the concern, Consumer stated, Yes, correct. she wanted to know should she, number one? If I answer that question then I have a follow-up question which is the primary reason she was calling. Consumer was informed about the role of Pfizer Drug Safety and Pfizer Medical Information. Consumer stated, Okay, well now was she supposed to report that she had felt like she had adverse symptoms to this department? Because that's determining whether she wanted to take next one or not, for the last few shots she did know she had read all the reports about the have suffered a mild symptoms, she did not think her symptoms were mild, the first time she didn't notice it was going to happen, so the second, third time okay she thought she will be prepared with food and suffered upset stomach because the three time, 10 hours after she got the shot almost to the minute because she got the shot at noon and she went about doing her business and everything that happened at the time of shot was the soreness in the arm but at 10 o'clock that night for 3 times she would break out in the chills, she mean really bad chills like she was suffering from some disease and she would last about 4 hours, then the chills would stop and she would go in to sweat like a fever in sweat for another 4 hours, so then those with the side and she would be weak and nauseated and she had never had headache, she was in good condition, her vitals were good, she was over weight other than that I take blood pressure pill (Losartan) and something for reflux, Omeprazole and those are really 2 prescription she took for pretty good. Anyway for entire week she was just no good, she was disreg she don't consider, and then her friend through her age or little younger ones her age, the only symptoms they she was had soreness in the arm, now she had read that people say well it just means the shot was working, well it's having a hell of war with me so they must be working damn good to put her out for a week, she was wondering the next shot if she should take it if you understand because that was a week of her body going through (Incomplete sentence). When paraphrased the concern, Consumer stated, Yes because she know COVID is still around, she wear the mask and as much as possible if you go out to eat it was still going to be vulnerable to the people, you always going to take your mask on vacation. Consumer was informed about the role of Pfizer Drug Safety. Lot number for dose 4, Consumer stated that well she could not read that she would tell you what it looks it, she was going to give you her best guess, she could not tell it's F or P M0173. That's all she had. Consumer further stated, she had got another number but she don't know if this is a Pfizer product they have put it on COVID vaccination record but it got a different name and a lot number on 10Jun2022, she will give it to you but it look like BHAUERIC that's the name she guess. When she got it, she asked Pharmacist for a COVID card and this is what he wrote a Lot# but it doesn't say Pfizer on it she have been getting the Pfizer shot she thought but she can't really read the writing and then there is a number underneath it looks like the name and then it says GH9694, is that a Pfizer product? she told you she gave you those letters that's the first thing and then there is a number, she was giving you everything. she hope this is Pfizer (As consumer was unsure if the details were of Pfizer COVID Vaccine or any other vaccine, hence product details not captured in tab). Other Medical Conditions or Other Medications: Consumer stated, For blood pressure Losartan and Omeprazole, well she took a bunch of Vitamin supplements. Prior Vaccination (within 4 weeks): Consumer stated, The last vaccine she took a flu shot at the same time, she put her cards away but over the last day for the COVID vaccination which one she had the flu shot. Consumer stated that the day of the last COVID vaccine she gave you, she put the cards away. Consumer stated that tylenol and something for nausea but she did not remember she had chewable, Tums she think.; Sender's Comments: Linked Report(s) : US-PFIZER INC-202300214238 same patient and drug, different dose and event;