fever/fever 101-100; nausea; Aches everywhere; Chills; could not walk or get out of bed/can hardly walk; She is still having sob; Weakness; affected my heart muscle; she couldn't eat for 5 days; appetite still not right; cold; Received the booster dose; Very sick/seriously ill/deathly ill; couldn't move; By myself and lost for about 4 or 5 days; This is a spontaneous report received from contactable consumer from Medical information team. The reporter is the patient.  A 73 year-old female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE), administration date 22Nov2021 08:45 (Lot number: F63527) as dose 3 (booster), single for COVID-19 immunization when the patient was 73 years old. Relevant medical history included: "I had heart surgery" (unspecified if ongoing); "2 double knees" (unspecified if ongoing); "2 knee replacements" (unspecified if ongoing); "Open Heart Surgery" (unspecified if ongoing). The patient's concomitant medications were not reported. Vaccination history included: Covid-19 vaccine (dose 1, Unknown manufacturer (Lot number: EL9262), Primary Immunization series complete but unknown manufacturer), administration date: 20Jan2021, for COVID-19 Immunization; Covid-19 vaccine (dose 2, unknown manufacturer (lot number: EN6201), Primary Immunization series complete but unknown manufacturer), administration date: 10Feb2021, for COVID-19 Immunization. The following information was reported: MALAISE (non-serious) with onset Nov2021, outcome "unknown", described as "Very sick/seriously ill/deathly ill"; PYREXIA (non-serious) with onset 22Nov2021, outcome "recovered", described as "fever/fever 101-100"; NAUSEA (non-serious) with onset 22Nov2021, outcome "recovered", described as "nausea"; PAIN (non-serious) with onset 22Nov2021, outcome "recovered", described as "Aches everywhere"; CHILLS (non-serious) with onset 22Nov2021, outcome "recovered" (06Dec2021), described as "Chills"; GAIT DISTURBANCE (non-serious) with onset 22Nov2021, outcome "recovering", described as "could not walk or get out of bed/can hardly walk"; DYSPNOEA (non-serious) with onset 22Nov2021, outcome "recovering", described as "She is still having sob"; ASTHENIA (non-serious) with onset 22Nov2021, outcome "recovering", described as "Weakness"; FEELING ABNORMAL (non-serious) with onset 2021, outcome "unknown", described as "By myself and lost for about 4 or 5 days"; CARDIOMYOPATHY (non-serious) with onset 22Nov2021, outcome "not recovered", described as "affected my heart muscle"; FEEDING DISORDER (non-serious) with onset 22Nov2021, outcome "recovering", described as "she couldn't eat for 5 days"; MOVEMENT DISORDER (non-serious) with onset 2021, outcome "unknown", described as "couldn't move"; APPETITE DISORDER (non-serious) with onset 22Nov2021, outcome "recovering", described as "appetite still not right"; FEELING COLD (non-serious) with onset 22Nov2021, outcome "recovering", described as "cold"; and IMMUNISATION (non-serious) with onset 22Nov2021, outcome "unknown", described as "Received the booster dose". The events "fever/fever 101-100", "nausea", "aches everywhere", "chills", "could not walk or get out of bed/can hardly walk", "she is still having sob", "weakness", "by myself and lost for about 4 or 5 days", "affected my heart muscle", "she couldn't eat for 5 days", "couldn't move" and "appetite still not right" were evaluated at the physician office visit. The patient underwent the following laboratory tests and procedures: body temperature: fever 101 to 100. Therapeutic measures were taken as a result of pyrexia. Additional information: The patient reported that she had a very bad reaction to the Pfizer Covid Vaccine Booster Shot. She reported that she is a human being and she is not very happy. She lost 2 weeks of her life, she was so sick, she has never been this sick and she has had open heart surgery and 2 knee replacements and never has she been this sick, it was horrible. She had her first two shots and never had a problem. She took the booster and she thought she lost her mind, and she lives alone and she was stuck in her bed for 3-4 days and she couldn't move. Caller states she had fever 101 to 100, nausea, aches everywhere, chills for 12-14 days, she couldn't walk, couldn't get out of bed hardly at all, she had to wear a diaper, she couldn't eat for 5 days, she stayed in bed and couldn't move. She was so pleased with Pfizer at first, but she is not taking a booster gain, this was too much. Now, she has to take tests on her heart because they think it affected the muscles, she will find out next week. She still has shortness of breath and she can hardly walk and she was so weak. She was not sick before. She hadn't been anywhere, she took the shot and came home, she had to leave Store, because got so cold, she didn't even get in the store. Her appetite still is not right either. As treatment the patient took Tylenol for the fever. The patient did not receive any other vaccines within 4 weeks prior to the COVID vaccine. No AEs prior to vaccinations.  No follow-up attempts are possible. No further information is expected.