COVID 19; COVID 19; Dose- 1, 2, 3, and 4: Moderna and Dose 5: Pfizer; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 66-year-old female patient (not pregnant) received BNT162b2, BNT162b2 omi ba.4-5 (BNT162B2, BNT162B2 OMI BA.4-5), on 24Oct2022 at 12:00 as dose 5 (booster), single (Lot number: GT3217) at the age of 66 years, in left arm for covid-19 immunisation; elasomeran (MODERNA COVID-19 VACCINE), on 02Jan2021 at 10:00 as dose 1, single (Lot number: 025L20A), in left arm, on 30Jan2021 at 11:00 as dose 2, single (Lot number: 062G20A), in right arm, on 14Nov2021 at 14:00 as dose 3 (booster), single (Lot number: 045B21A), in left arm and on 27Apr2022 as dose 4 (booster), single (Lot number: 002M21A), in right arm for covid-19 immunisation. The patient's relevant medical history included: "Hypertension" (unspecified if ongoing). Concomitant medication(s) included: CELECOXIB, start date: 01May2021.   The following information was reported: INTERCHANGE OF VACCINE PRODUCTS (medically significant) with onset 24Oct2022 at 12:00, outcome "unknown", described as "Dose- 1, 2, 3, and 4: Moderna and Dose 5: Pfizer"; DRUG INEFFECTIVE (medically significant), COVID-19 (medically significant) all with onset 26Dec2022, outcome "unknown" and all described as "COVID 19". The patient underwent the following laboratory tests and procedures: SARS-CoV-2 test: (26Dec2022) Positive, notes: started Paxlovid on day 2 of covid symptoms and the same day after a rapid test was positive and a PCR done at urgent care. I; (unspecified date) Negative, notes: I tested negative 3 days after starting the Paxlovid and remained negative on 4 BinaxNow test over the past 8 days; (unspecified date) Negative, notes: I tested negative 3 days after starting the Paxlovid and remained negative on 4 BinaxNow test over the past 8 days; (unspecified date) Negative, notes: I tested negative 3 days after starting the Paxlovid and remained negative on 4 BinaxNow test over the past 8 days; (unspecified date) Negative, notes: I tested negative 3 days after starting the Paxlovid and remained negative on 4 BinaxNow test over the past 8 days; (unspecified date) Negative, notes: I tested negative 3 days after starting the Paxlovid and remained negative on 4 BinaxNow test over the past 8 days; (unspecified date) Negative, notes: I tested negative 3 days after starting the Paxlovid and remained negative on 4 BinaxNow test over the past 8 days; (unspecified date) Negative, notes: I tested negative 3 days after starting the Paxlovid and remained negative on 4 BinaxNow test over the past 8 days; (unspecified date) Negative, notes: I tested negative 3 days after starting the Paxlovid and remained negative on 4 BinaxNow test over the past 8 days; (26Dec2022) Positive, notes: started Paxlovid on day 2 of covid symptoms and the same day after a rapid test was positive and a PCR done at urgent care. I; (29Dec2022) Negative, notes: I tested negative 3 days after starting the Paxlovid. Therapeutic measures were taken as a result of drug ineffective, covid-19.    Clinical information: Product=COVID 19 Treatment, brand=Paxlovid, Treatment start date=26Dec2022,Treatment stop date=31Dec2022,Indication=Treatment of COVID-19.