shaking; weak; cough; shortness of breath; very ill/ sick; horrible chills; I had a 103 degree fever for 4 days, horrible chills that were just debilitating; ached everywhere/ severe aches; site soreness; This is a spontaneous report from a contactable nurse (patient). A 62-year-old female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Batch/lot number: EH9899) via an unspecified route of administration at left upper arm on 18Dec2020 at single dose for COVID-19 immunization. Medical history included auto immune problems, diabetes, thyroid condition, all ongoing since age 28; pemphigusvulgarism since Sep2020 and ongoing. No concomitant medications. Patient is a frontline worker. She received the vaccine on 18Dec2020 at (Name) where she works. 9 days later she got very ill. she didn't know if it's unrelated. She wanted to know if there is anything she need to be watching out for in order to get her second vaccine on Friday. She was so sick and she did have some autoimmune problems. She was really healthy. On 26Dec2020, she had a 103 degree fever for 4 days, horrible chills that were just debilitating. She was just shaking. She ached everywhere, she had severe aches since 26Dec2020. She got tested for Covid and it was negative on 28Dec2020, she had no cough and no vomit. She stayed in bed and drank lots of fluids and toughed it out. By New Year's Day (reported as 30Dec2020) her fever broke but she was so weak and didn't work. She was back at work now. Also, she experienced site soreness from the injection since 19Dec2020. She did have a cough or any shortness of breath. She felt awful. She had recovered. She was just a little nervous because everything she read said the reaction was more severe with second injection. She planned on getting the second shot. She would have a repeat Covid test on 07Jan2020. Reporter seriousness for fever 103: Medically significant. Reporter seriousness for severe aches: Medically significant. Reporter considered the causality of the event site soreness was related with bnt162b2, of the events fever 103 and severe aches was unknown. The outcome of the event fever was recovered on 30Dec2020, of event ache was recovered on 31Dec2020, of event chills was recovering, of event vaccination site pain was recovered on an unspecified date in Dec2020, of events cough and shortness of breath was recovered on an unspecified date.; Sender's Comments: Based on available information, a possible contributory role of the subject product, BNT162B2 vaccine, cannot be excluded for the fever, pain and other reported events due to temporal relationship.  There is limited information provided in this report.  Additional information is needed to better assess the case, including complete medical history, diagnostics, counteractive treatment measures and concomitant medications.  This case will be reassessed once additional information is available.  The impact of this report on the benefit/risk profile of the Pfizer product is evaluated as part of Pfizer procedures for safety evaluation, including the review and analysis of aggregate data for adverse events. Any safety concern identified as part of this review, as well as any appropriate action in response, will be promptly notified to Regulatory Authorities, Ethics Committees and Investigators, as appropriate.