chills; Tired; loss of appetite; Headache; She felt like she had a little bug; This is a spontaneous report from a contactable consumer or other non-HCP (patient herself) via Medical Information Team. A 59-year-old female patient received BNT162b2 (PFIZER BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Lot number- UNKNOWN) via an unspecified route of administration in arm (reported as left or right arm) on an unspecified date in Dec2020 (also reported as Dec2021) as dose 1, single and received BNT162b2 (PFIZER BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Lot number- UNKNOWN) via an unspecified route of administration in arm (reported as left or right arm) on an unspecified date in Jan2021 as dose 2, single (at the age of 59-years-old) for COVID-19 immunization. Vaccination facility type was reported as hospital. Vaccine was not administered at military facility. List any other vaccinations within four weeks prior to the first administration date of the suspect vaccines was noted as none. Patient medical history noted that patient have other medical conditions, but none that are relevant. Patient medical history (including any illness at time of vaccination) she stated that she does have other medical conditions, but none that are relevant. Family medical history relevant to AEs were reported as none. The concomitant medications was not reported. Patient experienced after she got her shots, she was tired, and got chills, headache, and loss of appetite on an unspecified date in Dec2020. The reported seriousness of the event was non-serious. Stated that those side effects went away, but periodically the tired, chills and loss of appetite comes back, and she feels like she has a little bug, then it goes away again. Stated that the headache had not been reoccurring on an unspecified date in Jan2021.  Patient stated that she planned to talk to her doctor about all this when she goes to see him on 26Aug2021. Patient received both doses of the vaccine, one dose in Dec2020 (reported as Dec2021) and the second dose in Jan2021. She had experienced side effects like chills, tiredness and loss of appetite. These side effects reoccurred and resolved periodically. She stated this started when she got the vaccine and was asking was it possible to have these reoccurring side effects from the vaccine. Stated that she got both doses of the shot, but it had been a while. She thought she got them at the beginning of the year. She had the little side effects and they went away. Stated that she will still get them periodically and then they will go away again and she will be fine. Stated that she plans to talk to her doctor about all this when she goes to see him on 26Aug2021. After she got her shots she was tired, and got chills, headache, and loss of appetite.  Stated that those side effects went away, but periodically the tired, chills and loss of appetite comes back, and she felt like she had a little bug then it goes away again. Stated that the headache has not been reoccurring. She did not have her vaccine card with her to provide the dates of her vaccines or the Lot numbers, but caller stated that she thought she got her first dose in Dec2020 and the second dose in Jan2021. She got her shots in opposite arms, so one dose was in the right arm and the other dose was in the left arm, but she did not know which dose was in which arm. She stated that she did have other medical conditions, but none that are relevant. The adverse events did not result in visit to emergency room or physician office. The outcome of the events of tired, chills and loss of appetite, feeling abnormal was not recovered and the outcome of headache was resolved on an unspecified date in Jan2021.  The lot number for the vaccine, [BNT162B2], was not provided and will be requested during follow up.  Information about lot/batch number cannot be obtained. No further information expected.