high fever up to 102 degrees; joint pains/joint aches; Chills; This is a spontaneous report received from contactable Consumer or other non HCP from medical information team. The reporter is the patient.  A 69 year-old female patient received bnt162b2 (BNT162B2), intramuscular, administered in arm left, administration date 18Jan2021 08:30 (Lot number: EL3247) as dose 1, single and intramuscular, administered in arm left, administration date 08Feb2021 08:30 (Lot number: EL9264) as dose 2, single for covid-19 immunisation. Relevant medical history included: "High blood pressure" (unspecified if ongoing); "Fever" (unspecified if ongoing); "Aches" (unspecified if ongoing). Concomitant medication(s) included: VALSARTAN HCT taken for hypertension, start date: 08Feb2021, stop date: 12Feb2021; TYLENOL taken for pyrexia, pain, start date: 15Oct2021, stop date: 19Oct2021. Past drug history included: Senior flu shot. The following information was reported: PYREXIA (non-serious), outcome "unknown", described as "high fever up to 102 degrees"; ARTHRALGIA (non-serious), outcome "unknown", described as "joint pains/joint aches"; CHILLS (non-serious), outcome "unknown", described as "Chills". Relevant laboratory tests and procedures are available in the appropriate section.  Additional information: The patient received her first Covid-19 shot on 18Jan2021 at (withheld). She did not experience any reaction other than a sore arm for a day or two. On 08Feb2021, she received her second Covid-19 shot at (withheld).  at approximately 8:30 am. By 10 pm, she began experiencing chills, body aches, joint pain and 101.9 fever. This lasted for 4 days followed by 100-degree fever for another day and extreme tiredness for several weeks. In light of this reaction, she was hesitant to obtain a booster shot without discussing this with a professional medical adviser. Her concern was that this was not a typical response and that she was experiencing a hyperimmune or autoimmune response. Also, Guillain-Barre syndrome crossed my mind. At that time, She did not consider that the product was defective, but rather that something in her immune system might be amiss. On 27Sep2021, while at a well-care visit, she discussed this reaction with my physician. She recommended that perhaps she could delay taking the booster if she checked my antibody titers. she was not comfortable with putting off the inevitable, taking a booster, since she was over 65 years old. The following day, she called facility to obtain reassurance that her reaction was normal and it would be safe to make an appointment for a booster shot. She spoke to (withheld) in the medical division. She advised her to speak to my physician which she had already done and she read off a list of common reactions. she did not experience a rash, hives, low grade fever, or any other anaphylaxis event. With no clear direction on whether or not the booster would be safe for her to take, she made the decision to take a booster at withheld on 15Oct2021 at 1 pm. By 10 pm that night she once again had severe tremors, chills, aches, joint pain and 101.7 fever which lasted for three days followed by extreme fatigue. She is currently relieved that she was as protected as possible from Covid-19, but concerned that she will have to obtain a yearly booster shot for the disease.  No follow-up attempts are possible. No further information is expected.