Chills/teeth chattering; sweating; low grade fever; mild headache; congestion; sore arm; mild nausea; general feeling of unwell; very sleepy; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 70-year-old female patient (not pregnant) received BNT162b2 (BNT162B2), on 18Nov2021 at 13:30 as dose 3 (booster), single (Lot number: FH8030), in left arm and on 20May2022 at 12:30 as dose 4 (booster), single (Lot number: FP4554) at the age of 70 years, in left arm for covid-19 immunisation. The patient's relevant medical history included: "Dyslipidemia" (unspecified if ongoing); "Osteopenia" (unspecified if ongoing); "Sleep Apnea" (unspecified if ongoing); "Allergic Rhinitis" (unspecified if ongoing); "Raynaud's" (unspecified if ongoing); "Scleroderma" (unspecified if ongoing); "Epilepsy" (unspecified if ongoing); "Acid Reflux" (unspecified if ongoing). Concomitant medication(s) included: ROSUVASTATIN CALCIUM; VITAMIN B 12 [CYANOCOBALAMIN]; D3. Past drug history included: Tegretol, reaction(s): "Known allergies: Tegretol"; Codeine, reaction(s): "Known allergies: Codeine"; Amoxicillin, reaction(s): "Known allergies: Amoxicillin"; Prednisone, reaction(s): "Known allergies: Prednisone"; Trileptal, reaction(s): "Known allergies: Trileptal"; Reclast infusion, reaction(s): "Known allergies: Reclast Infusion". Vaccination history included: BNT162b2 (Dose Number: 1, Batch/Lot No: EN6203, Location of injection: Arm Left), administration date: 27Feb2021, when the patient was 69-year-old, for Covid-19 Immunization; BNT162b2 (Dose Number: 2, Batch/Lot No: EN6208, Location of injection: Arm Left), administration date: 20Mar2021, when the patient was 69-year-old, for Covid-19 Immunization. The following information was reported: CHILLS (non-serious) with onset 20May2022 at 19:00, outcome "recovered", described as "Chills/teeth chattering"; NASAL CONGESTION (non-serious) with onset 20May2022 at 19:00, outcome "recovered", described as "congestion"; MALAISE (non-serious) with onset 20May2022 at 19:00, outcome "recovered", described as "general feeling of unwell"; PYREXIA (non-serious) with onset 20May2022 at 19:00, outcome "recovered", described as "low grade fever"; HEADACHE (non-serious) with onset 20May2022 at 19:00, outcome "recovered", described as "mild headache"; NAUSEA (non-serious) with onset 20May2022 at 19:00, outcome "recovered", described as "mild nausea"; PAIN IN EXTREMITY (non-serious) with onset 20May2022 at 19:00, outcome "recovered", described as "sore arm"; HYPERHIDROSIS (non-serious) with onset 20May2022 at 19:00, outcome "recovered", described as "sweating"; SOMNOLENCE (non-serious) with onset 20May2022 at 19:00, outcome "recovered", described as "very sleepy". Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were not taken as a result of chills, hyperhidrosis, pyrexia, headache, nasal congestion, pain in extremity, nausea, malaise, somnolence.  Additional information: No other vaccine in four weeks. Other medications in two weeks are Rosuvastatin Calcium 10 MG, B12 5000mg, D3 50 mcg. No Covid prior vaccination. No Covid tested post vaccination. Teeth chattering chills, sweating, low grade fever, mild headache, congestion, sore arm, mild nausea, general feeling of unwell, very sleepy. Same as with 1st booster but for a shorter period of time 36 hours vs 53 hours.