After received second Pfizer Covid shot patient flareups with FMF stopped. Patient used to get at least four attacks per year.; This is a spontaneous report received from a Consumer or other non HCP, Program ID. A patient (age and gender not provided) received BNT162b2 (BNT162B2), as dose 2, single (Batch/Lot number: unknown) for covid-19 immunisation. The patient’s relevant medical history included: “Familia Mediterranean Fever (FMF)” (unspecified if ongoing). The patient’s concomitant medications were not reported. Vaccination history included: Covid-19 vaccine (DOSE 1, SINGLE; MANUFACTURER UNKNOWN), for COVID-19 immunisation. The following information was reported: THERAPEUTIC RESPONSE UNEXPECTED (non-serious), outcome “unknown”, described as “After received second Pfizer Covid shot patient flareups with FMF stopped. Patient used to get at least four attacks per year.”. The information on the batch/lot number for BNT162b2 will be requested and submitted if and when received.