Sore arm immediately after getting second dose of COVID Vaccine; Chills; Myalgia; severe headache; Nausea; She felt like she had a temperature and by the time it was checked her temperature was 101.9/febrile; This is a spontaneous report from a contactable other healthcare professional (HCP) reporting for herself.  A 64-year-old female patient received the second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, lot number: EK9231), via an unspecified route of administration at left upper arm on 07Jan2021 14:30 at single dose for covid-19 immunization. The COVID-19 vaccine was administered at Hospital, not a Military Facility. The patient's medical history was none. There were no concomitant medications. The patient did not receive any other vaccines within 4 weeks prior to the COVID vaccine. The patient got the Flu Vaccine last part of Sep2020 or Beginning of Oct2020. The patient received the first dose of BNT162B2 (lot number: EK57530), via an unspecified route of administration at left Upper arm on 17Dec2020 9:10AM for covid-19 immunization. She only had a sore arm. It started the same day, a couple of hours after getting the vaccine. It went away a day to a day and a half after it started. After that she was fine. She got the second dose on 07Jan2021. After the second dose, immediately, like within five minutes her arm became very sore, this event was assessed as non-serious by HCP. Also, that Thursday (07Jan2021) night after getting the second dose of the Vaccine around 9PM-10PM she started to get chills, myalgia, severe headache, and nausea. She also mentioned she was so sick during the night she was not able to get up and around. She felt like she had a temperature and by the time it was checked her temperature was 101.9. She was febrile all through 08Jan2021. She started to become afebrile 09Jan2021 with improvement and by 10Jan2021 all her symptoms had gone away and completely resolved. Seriousness Criteria: Stated she felt these are serious. She was unable to go to work on Friday. She could not return back to work until Monday. The HCP assessed all events were related to the vaccine. The outcome of the events was recovered on 10Jan2021. She stated, even though she got so sick with getting the vaccine she was just continuously telling her self this is better than having COVID. She stated she even told people even if she knew after getting the shot she would have this reaction she would still take it. She has seen death occur from COVID and does not want that to happen.; Sender's Comments: Based on plausible temporal relationship, clinical course and known safety profile of the product, the reported events chills, myalgia, severe headache, nausea and fever were likely causally related to the use of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE).  The case will be reassessed should additional information become 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.