This is a spontaneous report received from a contactable reporters (Consumer or other non HCP) from product quality group. The reporter is the patient. A 64-year-old female patient (not pregnant) received BNT162b2 (BNT162B2), on 28Dec2021 as dose 3 (booster), single (Lot number: FJ1611), in left arm and on 06May2022 at 15:00 as dose 4 (booster), single (Lot number: FM9992) at the age of 64 years, in left arm for Covid-19 immunisation; CoviD-19 vaccine miRNA (miRNA 1273) (MODERNA COVID-19 VACCINE), on 15Mar2021 as dose 1 , single (Lot number: 030A21A), in left arm and on 12Apr2021 as dose 2, single (Lot number: 036B21A), in left arm 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 07May2022, outcome "recovered" and all described as "COVID-19". The patient underwent the following laboratory tests and procedures: SARS-CoV-2 test: Unknown results. Therapeutic measures were not taken as a result of drug ineffective, Covid-19. Product Quality Group provided investigation results. Product Description (CR): COMPOUND BNT 162 COVID 19 VACCINE SUSPENSION FOR INTRAMUSCULAR 2ML MULTIPLE DOSE VIAL X 1 Lot (CR): FJ1611. Conclusion of Previously Completed Investigation (FCI/SI/OffCI): The complaint for lack of effect of the PFIZER BIONTECH COVID-19 VACCINE lot FJ1611 was investigated. The investigation included reviewing manufacturing and packaging batch records, retain samples, deviation investigations, analytical release test results, and an analysis of complaint history for the reported lot. The final scope of this investigation is limited to the reported finished goods lot FJ1611, fill lot FH4344 and the bulk formulated drug product FJ8502. 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. Product Description (CR): COMPOUND BNT 162 COVID 19 VACCINE SUSPENSION FOR INTRAMUSCULAR 2ML MULTIPLE DOSE VIAL X 1 Lot (CR): FM9992. Conclusion of Previously Completed Investigation (FCI/SI/OffCI): For this lot Adverse Event Safety Request For Investigation and/or Lack Of Effect was previously investigated. All analytical results were checked and were within registered limits. The investigation of the referenced PR ID resulted in the following conclusion: Reference PR ID 7142695 (see File attachment in this investigation record) The complaint for "PFIZER BIONTECH COVID -19 VACCINE" was investigated. The investigation included reviewing the involved batch records, deviation investigation, an analysis of the complaint history for the reported lot and product type. The final scope was determined to be the associated lot(s) of the reported lot FM9992. A complaint sample was not returned. No related quality issues were identified during the investigation. There is no impact on product quality, regulatory, validation and stability. Regulatory Authority concludes that the reported defect is not representative of the quality of the batch and the batch remains acceptable. The RA process determined that no regulatory notification was required. The reported defect could not be confirmed. No root cause or CAPA were identified as the complaint was not confirmed. No follow-up attempts are possible. No further information is expected.