Arm soreness; Got very cold then very hot; Got very cold then very hot; Had the shakes; Weak; Chills; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP).  A 77 year-old female patient received bnt162b2 (BNT162B2), administered in arm right, administration date 08Mar2021 09:15 (Lot number: EN6208) at the age of 77 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "TIA" (unspecified if ongoing). Concomitant medication(s) included: PLAVIX taken for transient ischaemic attack, start date: 08Mar2021. Vaccination history included: Bnt162b2 (1st dose, Lot:EM9809, Expiry: Unknown, NDC: Unknown, in Right arm.), administration date: 13Feb2021, when the patient was 77 years old, for COVID-19 immunisation. The following information was reported: PAIN IN EXTREMITY (non-serious) with onset 08Mar2021 20:00, outcome "not recovered", described as "Arm soreness"; FEELING COLD (non-serious), FEELING HOT (non-serious) all with onset 08Mar2021 20:00, outcome "not recovered" and all described as "Got very cold then very hot"; TREMOR (non-serious) with onset 08Mar2021 20:00, outcome "not recovered", described as "Had the shakes"; ASTHENIA (non-serious) with onset 08Mar2021 20:00, outcome "not recovered", described as "Weak"; CHILLS (non-serious) with onset 08Mar2021 20:00, outcome "not recovered", described as "Chills".  Additional information: Family Medical History Relevant to AE(s) was reported as none. Any other vaccinations within four weeks prior to the first administration date of the suspect vaccine(s) was reported as none. AE(s) following prior vaccinations were reported as none. All the vaccines administered on same date with the Pfizer vaccine considered as suspect was reported as none. The caller stated that, he thought the Plavix was for cancer, but patient stated it was for a TIA. Stated that, she has been taking it for about 20 years. Stated that, the patient was taking Covid 19 vaccine cause she didn't wanted to get Covid-19. Stated that, the reporter called about his wife, (patient name). Stated that, they both got their 2nd dose of the Covid-19 vaccine yesterday and she has been having a hard time and was still having a hard time. Stated that, her arm got sore. Stated that, when she went to bed, she got very cold then very hot, she had the shakes and had a miserable night. Then this morning, she was still suffering from this uncomfortableness. The reporter stated that, his wife was in the other room, but just said that she was still very weak, has chills and was uncomfortable. Stated that, she had no effect from the 1st dose, but this 2nd dose has thrown her threw a loop. The reporter provided the patient's initials as (initial's withheld). Stated that, reporter did not know his wife's height and weight. Stated that, all the events started at 08:00 pm on 08Mar2021. The reporter seriousness for the events was reported as unspecified. Stated that, no treatment so far, but wanted to know how long this should go on before they should get alarmed. Verified that, the patient has the same address as the reporter. The AE did not require a visit to emergency room and physician office. The other relevant diagnostic and confirmatory test results for event(s) was reported as none. The reporter stated that, he got the same vaccine and didn't have a problem, but he was not on a blood thinner. No further details were provided.  No follow-up attempts are possible. No further information is expected.