she is a little tired; slight headache; arm hurt; she felt lousy; fever/she was running at 99.5 low grade fever; didn't feel well; She had chills; didn't sleep well; This is a spontaneous report from a contactable consumer. A 76-years-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection) via an unspecified route of administration, administered in Deltoid Right on 26Jan2021 15:00 (at the age of 76-years-old) (Batch/Lot Number: EL1283) as SINGLE DOSE for covid-19 immunisation. No additional Vaccines Administered on Same Date of the Pfizer Suspect. The patient was not Vaccine Administered at Facility. The patient had no medical history (including any illness at time of vaccination). The patient had no family medical history relevant to AE(s). There were no concomitant medications. Historical vaccination included flu vaccine for the indication of flu vaccination which gave a reaction of sore arm. On 26JAN2021 patient experienced fever/she was running at 99.5 low grade fever, didn't feel well, she had chills, didn't sleep well, arm hurt and she felt lousy. The patient underwent lab tests and procedures which included body temperature: 99.5 on 26Jan2021 low grade fever; Her normal temperature is 96-97.0. On 27Jan2021, the patient had slight headache. On 28Jan2021, body temperature was 98.1 and she is a little tired, but her fever was 98.1. Therapeutic measures were taken as a result of fever/she was running at 99.5 low grade fever, didn't feel well, she had chills, didn't sleep well, slight headache, she is a little tired, arm hurt, she felt lousy. The patient got the first dose yesterday and had some reaction. She got a fever, her arm hurt and she felt lousy. She also mentioned that she took Tylenol yesterday. She and her husband got the vaccine on Tuesday 26Jan2021. Her husband was fine except for the sore arm but she didn't feel so well. Her normal temperature is 96-97.0 but she was running at 99.5 low grade fever and didn't feel well. She had chills and didn't sleep well. Last night she had a slight headache, chills, and didn't sleep well but today is much better. She has had no other symptom but was taking Tylenol. When speaking with her sister, she was told by her that she read Tylenol could effect the efficacy of the vaccine. She wants to know does it effect the efficacy, also her husband and her had a martini to celebrate getting the vaccine. Is that ok. The night of the 26Jan2021 she had chills that left her she was hot then cold. On 27Jan2021, later in the evening, she had a slight headache and then it went away later on that evening. Treatment: She could not gotten through the day without the Tylenol. Today, she is a little tired but her fever was 98.1 when she last took her temperature. She is much better today. The only way to describe yesterday is that she felt really lucky. The patient had no prior vaccinations (within 4 weeks). No AE(s) require a visit to Emergency Room. The patient had no relevant tests. The patient is healthy. The seriousness of the events was reported as non-serious. Outcome of the events fever/she was running at 99.5 low grade fever, She had chills, didn't sleep well, slight headache was reported as recovered on 28Jan2021, didn't feel well, she felt lousy and arm hurt was reported as unknown, she is a little tired was reported as not recovered. No investigation assessment needed.  Follow-up attempts are completed. No further information is expected.