Caller states he tested positive for Covid recently on Tuesday 22Mar2022; Caller states he tested positive for Covid recently on Tuesday 22Mar2022; like a light head cold; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team for a Pfizer sponsored program (172086). The reporter is the patient.  A 42 year-old male patient received bnt162b2 (BNT162B2), administration date Oct2021 (Batch/Lot number: unknown) as dose 3 (booster), single, administration date Mar2021 (Batch/Lot number: unknown) as dose 2, single and administered in arm, administration date Mar2021 (Batch/Lot number: unknown) as dose 1, single for covid-19 immunisation. Relevant medical history included: "no" (unspecified if ongoing), notes: Other Conditions: No. There were no concomitant medications. The following information was reported: DRUG INEFFECTIVE (medically significant), outcome "unknown", COVID-19 (medically significant) with onset 22Mar2022, outcome "unknown" and all described as "Caller states he tested positive for Covid recently on Tuesday 22Mar2022"; NASOPHARYNGITIS (non-serious) with onset Mar2022, outcome "unknown", described as "like a light head cold". The patient underwent the following laboratory tests and procedures: sars-cov-2 test: (22Mar2022) positive; (22Mar2022) positive. Therapeutic measures were taken as a result of covid-19.  Clinical Course: The reporter reported that a review of the Prescribing Information for Paxlovid failed to find any information regarding it's effect on natural immunity . Please consult with your doctor or health care provider for further guidance, as your doctor/healthcare provider is the most familiar with your medical condition." Warm transfer from (withheld) with Pfizer Medical Information, of caller preferring to stay anonymous. Agent reports caller first called with a question about Paxlovid today, and is reporting adverse event that he has had both Pfizer COVID-19 vaccine doses and booster last year, then tested positive Tuesday morning, this past week, for COVID. Agent reports caller started taking Paxlovid on Tuesday this past week as well. During joined call, caller asks agent if he were to get sick again with COVID, can he take Paxlovid again? Agent referred caller to speak to his provider if this happened in the future for this question. Caller declines to provide Paxlovid prescribing provider information. Caller says he started taking Paxlovid as the doctor prescribed it, and also taking Vitamin D, Vitamin C, and Vitamin E, and just has been drinking lots of water. He say he is also taking Zinc as well. Caller says he doesn't have the vitamins in front of him, but he is taking 50mg of Zinc, 1000mg of Vitamin C, 50mcg D3, and 400IU Vitamin E, which he takes each of those once a day by mouth. He says he also takes a multivitamin, so there is going to be additional vitamins to the amounts he takes. Paxlovid dose: Caller says he has taken this as it is prescribed: in the morning he takes 100mg Ritonavir and also two tablets of 150mg Nirmatrelvir, then he takes these again in the evening as prescribed, they are taken by mouth.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.