States her height has decreased; Hand is numb from holding phone receiver since 8:00 AM; Light headache; She still didn't feel good; She didn't feel like doing anything; She slept all day; Chills; she has been isolating herself; This is a spontaneous report received from contactable reporter (Consumer). The reporter is the patient.  A 93-year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 22Mar2021 (Lot number: EP7534) at the age of 93 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "Blood pressure" (ongoing); "Cholesterol" (ongoing); "fever" (not ongoing), notes: The last time she had a fever was in the 80s. She hardly ever has a fever. The patient took concomitant medications. Vaccination history included: bnt162b2 (Dose 1, single (Lot Number: EN6203, Expiration Date: Unknown)), administration date: 01Mar2021, when the patient was 93 years old, for COVID-19 Immunization; Flu shot (She gets a flu shot every year.), administration date: Sep2020; Pneumonia shot (She also gets the pneumonia shot every five years.). The following information was reported: CHILLS (non-serious) with onset 22Mar2021, outcome "recovered" (23Mar2021), described as "Chills"; HEADACHE (non-serious) with onset 23Mar2021, outcome "recovered" (24Mar2021), described as "Light headache"; BODY HEIGHT DECREASED (non-serious), outcome "unknown", described as "States her height has decreased"; MALAISE (non-serious) with onset 23Mar2021, outcome "unknown", described as "She still didn't feel good"; DECREASED INTEREST (non-serious) with onset 23Mar2021, outcome "unknown", described as "She didn't feel like doing anything"; FATIGUE (non-serious) with onset 23Mar2021, outcome "unknown", described as "She slept all day"; PATIENT ISOLATION (non-serious) with onset Mar2021, outcome "unknown", described as "she has been isolating herself"; HYPOAESTHESIA (non-serious) with onset 26Mar2021, outcome "unknown", described as "Hand is numb from holding phone receiver since 8:00 AM". Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of headache.  Additional Information: The patient received Pfizer COVID vaccine because she did not want the COVID. She received her second dose last Monday on 22Mar2021 and she had chills that night. She was asking if it was something to do with her age. She was so cold so she turned on the heater, slept with her robe on and socks, even though she never wore socks, and two layers of blankets. She slept well and woke up around 3:00 AM. She didn't know if she should take acetaminophen (TYLENOL) or not because she wasn't sure if it would affect the shot. On Tuesday 23Mar2021, she had a headache so she took one acetaminophen and it worked. She wanted to know if this was a regular reaction and if it was because of age. She didn't know if she should call the doctor or not. She stated that the first dose was like any other vaccine. She was getting a flu shot every year and she got it in September, pneumonia shot every five years, and the shingles shot. The patient's reported weight was 130-135 (unspecified unit). Her height had decreased. She had a doctor's appointment to return in the second week of next month (April). She was concerned because some people didn't have a reaction and asked if it was because of her age. She was already okay and back to herself. She was fine. She did not have a fever. The last time she had a fever was in the 80s. She hardly ever had a fever. The chills started when she was about to go to sleep. She was fine in the morning, but she still didn't feel good. She didn't feel like doing anything on Tuesday (23Mar2021) and she slept all day. The chills lasted through Monday night (22Mar2021) to Tuesday during the day (23Mar2021). She described her headache as a "light headache". She woke up on Wednesday (24Mar2021) and she was fine. She seldom got headache. She had been isolating herself. Her concomitant medications included prescription for blood pressure, cholesterol, and vitamin supplements which she was taking every day for maintenance. Her hand was numb from holding phone receiver since 8:00 AM and she could not hold the phone for much longer.   No follow-up attempts are possible. No further information is expected.