COVID 19 Treatment; COVID 19 Treatment; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from product quality group. The reporter is the patient.  A 57-year-old male patient received BNT162b2 (BNT162B2), on 28Jan2021 as dose 1, single (Lot number: EN5318), in left arm, on 18Feb2021 as dose 2, single (Lot number: EN6198), in left arm and on 17Oct2021 as dose 3 (booster), single (Lot number: FF2590) at the age of 56 years, in left arm for covid-19 immunisation; coviD-19 vaccine mrna (mrna 1273) (MODERNA COVID-19 VACCINE), on 30Apr2022 as dose 4 (booster), single (Lot number: 056A22a), in left arm for covid-19 immunisation. The patient had no relevant medical history. There were no concomitant medications. The following information was reported: DRUG INEFFECTIVE (medically significant), COVID-19 (medically significant), outcome "not recovered" and all described as "COVID 19 Treatment". The patient underwent the following laboratory tests and procedures: SARS-CoV-2 test: (unspecified date) Negative; (08Jun2022) Negative; (10Jun2022) Negative; (13Jun2022) positive; (unspecified date) Unknown results. Therapeutic measures were taken as a result of drug ineffective, covid-19.  On 14Jun2022, investigation result received from product quality group:Conclusion of Previously Completed Investigation: The complaint for lack of effect of the PFIZER-BIONTECH COVID-19 VACCINE INJECTABLE lot FF2590 was investigated. The investigation included reviewing manufacturing and packaging batch records, deviation investigations, analytical release test results, and an analysis of the complaint history for the reported lot. The final scope was determined to be the reported finished goods lot FF2590, fill lot FF2559, and the bulk formulated drug product lot FE5320. A complaint sample was not returned. No related quality issues were identified during the investigation. There is no impact on product quality. No root cause or CAPA were identified as the complaint was not confirmed. All release testing performed prior to the release of the reported batch was within specifications.  On 14Jun2022, investigation result received from product quality group:Conclusion of Previously Completed Investigation: The complaint for lack of effect of the PFIZER-BIONTECH COVID-19 VACCINE lot EN6198 was investigated. The investigation included a review of manufacturing and packaging batch records, deviation investigations, and an analysis of complaint history for the reported lot. The final scope included the reported finished goods lot EN6198, fill lot EN5330, and the formulated drug product lot EN5319. A complaint sample was not returned, and photographs were not received. No related quality issues were identified during the investigation. There is no impact to product quality. No root cause or corrective/preventative actions were identified as the complaint was not confirmed. All release testing performed prior to the release of the reported batch was within specifications.  On 14Jun2022, investigation result received from product quality group:Conclusion of Previously Completed Investigation: The complaint for lack of effect of the PFIZER BIONTECH COVID-19 VACCINE INJECTABLE lot EN5318 was investigated. The investigation included reviewing manufacturing and packaging batch records, deviation investigations, and an analysis of complaint history for the reported lot. The final scope was determined to be the reported finished goods lot EN5318, fill lot EN5317, and the formulated drug product lot EN5316. A complaint sample was not returned. No related quality issues were identified during the investigation. There is no impact on product quality. No root cause or CAPA were identified as the complaint was not confirmed. All release testing performed prior to the release of the reported batch was within specifications.  Addition information: Treatment start date of treatment of COVID-19 was 01Jun2022. Treatment stop of treatment of COVID-19 was date was 05Jun2022. COVID-19 Rebound. Symptoms ended on Wednesday 01Jun, and started testing negative on an antigen test on Wednesday 08Jun. Tested negative daily until Friday 10Jun and started testing positive on an antigen test. No symptoms. Continue testing positive on an antigen test as of today 13Jun. Known allergies was no.