tested positive for covid; tested positive for covid; 3rd dose; This is a spontaneous report received from contactable reporter (Consumer or other non HCP) from medical information team and product quality group. The reporter is the patient. Other Case identifier(s): US-PFIZER INC-202200091932 (Pfizer).  A 70 year-old female patient received bnt162b2 (BNT162B2), administered in unknown arm, administration date 16Oct2021 (Lot number: 30125BA) at the age of 70 years as dose 3 (booster), single, administered in unknown arm, administration date 16Feb2021 (Lot number: EL9266, Expiration Date: May2021) as dose 2, single and administered in unknown arm, administration date 22Jan2021 (Lot number: EL9262, Expiration Date: May2021) as dose 1, single for covid-19 immunisation. Relevant medical history included: "Diabetes", start date: 2017 (unspecified if ongoing); "Verbatim: Borderline high blood pressure", start date: Jan2021 (unspecified if ongoing), notes: It was diagnosed after she received the vaccine; "Breast cancer", start date: Feb2021 (unspecified if ongoing), notes: Diagnosed in between first and second vaccine; "Lung cancer of adenocarcinoma" (unspecified if ongoing); "Allergies to dust" (unspecified if ongoing), notes: Allergies to dust; "adenocarcinoma and they were removed. The nodules were removed on following dates" (unspecified if ongoing), notes: The nodules were removed on Jan2019, Jul2019, Dec2020.; "Exposure to SARS-CoV-2", start date: 02Jan2022 (unspecified if ongoing) somebody, she was at a party with on Sunday, 02Jan2022 tested positive on Monday, 03Jan2022. Additional vaccines administered on same date of the Pfizer Suspect If applicable, list all vaccines administered on same date with the Pfizer vaccine considered as suspect was none. AEs following prior vaccinations was none. The patient had no family medical history relevant to AEs. Patient did not receive any antipyretic use (around the dates of Vaccination). There were no concomitant medications. Past drug history included: Vitamin c for Allergy, notes: diagnosed a long time ago, No specific Vitamin C brand, lot or expiration,since she was a baby. Vaccination history included: Flu (Flu a month before and thinks it was 4 weeks or greater. Unknown name, lot or expiration.), administration date: 2021, for immunization. The following information was reported: IMMUNISATION (medically significant) with onset 16Oct2021, outcome "unknown", described as "3rd dose"; VACCINATION FAILURE (medically significant), COVID-19 (medically significant) all with onset 06Jan2022 10:00, outcome "not recovered" and all described as "tested positive for covid". Patient received all three doses of the Pfizer COVID vaccine and tested positive for COVID virus and had a mild case. Patient tested positive for covid virus on 08Jan2022 (as reported). The adverse events did not result in emergency room or physician office visit. The patient underwent the following laboratory tests and procedures: sars-cov-2 test: (08Jan2022) positive; (06Jan2022) positive, notes: PCR Test the following day on Thursday; (05Jan2022) negative, notes: Rapid COVID Test on Wednesday; (06Jan2022) positive, notes: Rapid COVID test the following day on Thursday.The first Rapid test was negative and then the next day, the other two were positive. For Lack of Efficacy, the primary infection site was unknown and any secondary site (e.g. empyema) was reported a none.