Covid; Caller notes that he has had "Both Pfizer vaccines, dose one and 2 and one booster."; Covid; Caller notes that he has had "Both Pfizer vaccines, dose one and 2 and one booster."; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A male patient received BNT162b2, BNT162b2 omi ba.4-5 (BNT162B2, BNT162B2 OMI BA.4-5), in 2022 as dose 3 (booster), 15 ug single (Batch/Lot number: unknown) for covid-19 immunisation; BNT162b2 (BNT162B2), as dose 1, single (Batch/Lot number: unknown) and as dose 2, single (Batch/Lot number: unknown) for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. The following information was reported: DRUG INEFFECTIVE (medically significant), COVID-19 (medically significant) all with onset 2022, outcome "unknown" and all described as "Covid; Caller notes that he has had "Both Pfizer vaccines, dose one and 2 and one booster."". The events "covid; caller notes that he has had "both pfizer vaccines, dose one and 2 and one booster."" required emergency room visit. The patient underwent the following laboratory tests and procedures: Blood test: (2022) Result Unknown; SARS-CoV-2 test: (2022) Positive. Therapeutic measures were taken as a result of drug ineffective, covid-19. The patient was prescribed nirmatrelvir; ritonavir (PAXLOVID) with paracetamol (TYLENOL) and ibuprofen. The patient said it didn't say how long to take but he is taking as prescribed on those bottles of Tylenol and Ibuprofen. The patient completed nirmatrelvir; ritonavir course this AM and was asking how soon he should feel back to normal. The patient noted that he had had both Pfizer vaccines, dose one and two and one booster. The patient would like to know how soon he should be tested because he wanted to work this week but it had not been his 10th day yet. Other than the Covid test how they know the patient had recovered. They did a blood test while the patient was getting treatment in the ER to see if he needed or to double check. The patient noted 10Oct2022 was the 5th day of nirmatrelvir; ritonavir. Thursday was 10 days of original test positive and that was a home test. When he was seen in the ER, they did not retest him and took report of positive home test. The patient want to know whether the home tests was accurate. The patient want to test on 10Oct2022. The patient wanted to known whether he should get the other booster, or wait for his primary providers guidance and whether we had general information about the booster. The patient had not really talked to anyone about the 4th booster, Pfizer COVID 19 Vaccine, booster dose. The patient heard another one was available and he had not been pushed on it. The patient would like to know whether he should have taken the booster dose within a certain amount of time from the last or should he have done it before since having covid. The patient wanted the 4th dose. The patient wanted to know if we had research determining absolutely necessary or effective.  The information on the batch/lot number for BNT162b2, BNT162b2 omi ba.4-5, BNT162b2 has been requested and will be submitted if and when received.