got the covid 19 vaccine on 21Dec2020 and tested positive for covid on 24Dec2020; got the covid 19 vaccine on 21Dec2020 and tested positive for covid on 24Dec2020; This is a spontaneous report from a contactable Nurse (patient) from a Pfizer-sponsored program Pfizer First Connect. A 36-year-old female patient received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, batch/lot number: EK5730), via intramuscular in left deltoid  on 21Dec2020 10:00 at 0.3 ml, single for precaution as front line healthcare worker in hospital which is not a military facility.  Medical history included nonsmoker. She did not provide causality but stated that she probably already had COVID when she got the vaccine. It was unknown if the patient had SARS-CoV2 antibodies at diagnosis as she had never been tested. Other history was none. The patient did not have a history of hypertension, diabetes, heart disease, lung disease, liver disease, kidney disease, cancer, immunosuppressive disorder, obesity. There was not any pre-existing diseases worsened during the SARS-CoV2 infection. The patient hadn't been treated with immunomodulating or immunosuppressing medications or received any other vaccines around the time of COVID-19 vaccination. Concomitant medication included bupropion hydrochloride (WELLBUTRIN SR), sertraline hydrochloride (ZOLOFT), amfetamine aspartate, amfetamine sulfate, dexamfetamine saccharate, dexamfetamine sulfate (ADDERALL). Prior Vaccinations (within 4 weeks) were none. AE following prior vaccinations were none. There was no additional vaccines administered on Same Date (21Dec2020) of the Pfizer bnt162b2. The patient got the covid 19 vaccine on 21Dec2020 and tested positive for covid on 24Dec2020. The patient wanted guidance on receiving the 2nd dose of the vaccine. The reporter considered event was non-serious. The patient received the first dose of the vaccine on 21Dec2020, and after that on 24Dec2020, she tested positive for COVID . She was supposed to be revaccinated on 07Jan2021. She would like to know if she should she get this or does she need to be revaccinated. There is no prescriber. She received it through her work. She received the first dose on 21Dec2020, and assumed she was positive when she got it. She just had cough and muscle aches and a headache. Her dad was hospitalized. Hers was not that serious. She had not completely recovered yet. Her smell had not come back yet and she was just tired still. She said the headache was prior to getting vaccine. She did not provide causality but stated that she probably already had COVID when she got the vaccine. The cough occurred on 25Dec2020, muscle aches on 22Dec2020 at 08:00. There was no emergency room of or physician's office required for the events. The patient was not hospitalized or admitted to an ICU. Nasal swab test done. Imaging for COVID-Pneumonia, other radiological investigations, hematology, clinical chemistry, inflammatory markers, urinalysis, evidence of hypoxemia, other relevant test were none. The patient did not display clinical signs at rest indicative of severe systemic illness. The patient did not require supplemental oxygen (including high flow or ECMO) or receive mechanical ventilation. The patient did not receive any additional therapies for COVID-19. The event did not require the initiation of new medication or other treatment or procedure.  She did start taking extra vitamins on her own. The patient was recovered with some lasting effects such as not being able to smell and is tired still.; Sender's Comments: The Company cannot completely exclude the possible causality between the reported COVID with symptoms and the administration of COVID 19 vaccine, bnt162b2.  However, as the reporter claimed "she probably already had COVID when she got the vaccine", this may provide  an alternative explanation.