My symptoms went away within 6 days of starting Paxlovid. I tested negative that day. 2 days after that I still had lingering cough, woke up on day 3 with symptoms, and tested + again.; I tested negative that day. 2 days after that I still had lingering cough, woke up on day 3 with symptoms, and tested + again.; Interchange of vaccine products; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from product quality group. The reporter is the patient.  A 49-year-old male patient received BNT162b2 (BNT162B2), on 19Mar2021 as dose 1, single (Lot number: en6208), in left arm and on 16Apr2021 as dose 2, single (Lot number: er8729), in left arm for covid-19 immunisation; elasomeran (COVID-19 VACCINE MODERNA), on 25Oct2021 as dose 3 (booster), single (Lot number: 993904), in left arm and on 13Apr2022 as dose 4 (booster), single (Lot number: 48c21a), in left arm for covid-19 immunisation; davesomeran, elasomeran (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)), on 14Sep2022 as dose 5 (booster), single (Batch/Lot number: unknown), in left arm and on 16Mar2023 as dose 6 (booster), single (Batch/Lot number: unknown), in left arm for covid-19 immunisation. The patient's relevant medical history included: "Ulcerative Proctitis" (unspecified if ongoing); "Known allergies: Stone fruits -allergic" (unspecified if ongoing); "stomach intolerance of: black pepper, corn, dairy, chocolate, spinach" (unspecified if ongoing). Concomitant medication(s) included: OMEGA 3 [FISH OIL], start date: Jan2014, stop date: May2023; FLAX OIL, start date: Jan2014, stop date: May2023; FLUSH FREE NIACIN, start date: Jan2014, stop date: May2023; PROBIOTIC 10 [BIFIDOBACTERIUM BIFIDUM;BIFIDOBACTERIUM LACTIS;LACTOBACILLUS ACIDOPHILUS;LACTOBACILLUS BREVIS;LACTOBACILLUS BULGARICUS;LACTOBACILLUS CASEI;LACTOBACILLUS PARACASEI;LACTOBACILLUS PLANTARUM;LACTOBACILLUS RHAMNOSUS;LACTOBACILLUS SALIVARIUS], start date: Jan2014, stop date: May2023; B12-VITAMIIN, start date: Jan2014, stop date: May2023; SELENIUM, start date: Sep2020, stop date: May2023; VITAMIN D NOS, start date: Nov2011, stop date: May2023; MESALAMINE DELAYED RELEASE, start date: Jan2015, stop date: May2023. The following information was reported: INTERCHANGE OF VACCINE PRODUCTS (non-serious) with onset 25Oct2021, outcome "unknown"; COVID-19 (medically significant) with onset 2023, 9 days 21 hrs after the suspect product(s) administration, outcome "recovered", described as "I tested negative that day. 2 days after that I still had lingering cough, woke up on day 3 with symptoms, and tested + again."; DRUG INEFFECTIVE (medically significant) with onset 2023, 9 days 21 hrs after the suspect product(s) administration, outcome "recovered", described as "My symptoms went away within 6 days of starting Paxlovid. I tested negative that day. 2 days after that I still had lingering cough, woke up on day 3 with symptoms, and tested + again.". The patient underwent the following laboratory tests and procedures: SARS-CoV-2 test: (02May2023) Negative; (05May2023) Positive, notes: at 09:00 PM. Therapeutic measures were taken as a result of drug ineffective, covid-19. Additional information: Patient received COVID 19 anti-viral treatment with Paxlovid (Lot # 6f5573) from 26Apr2023 to 01May2023. Patient was recovering without treatment from COVID 19 recurrence.