muscle pain; This is a spontaneous report from a Pfizer-sponsored program received from a contactable consumer (patient) reported for herself. Report 1 of 2. A 60-years-old female consumer received second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Lot number: EN6204, Expiration date: unknown) via an unspecified route of administration, administered in right arm on 17Mar2021 (age at vaccination 60 years) as dose 2, single for COVID-19 immunization. The patient's medical history included breast cancer survivor (survivor for 14 years and stated she was not taking anything for that) and immunocompromised person (she had an auto-immune disorder). The patient's concomitant medications included infliximab (REMICAID) taken for autoimmune disorder (she initially started therapy with Remicaid in Sept2019. She had to change her remicaid infusion and pushed that back a week because they said the remicaid and Pfizer COVID vaccine should not be close together), ascorbic acid, ergocalciferol, folic acid, nicotinamide, panthenol, retinol, riboflavin, thiamine hydrochloride (MULTIVITAMINS [ASCORBIC ACID;ERGOCALCIFEROL;FOLIC ACID; NICOTINAMIDE; PANTHENOL; RETINOL; RIBOFLAVIN; THIAMINE HYDROCHLORIDE]), fish oil and calcium carbonate, colecalciferol (VITAMIN D 2000) taken for an unspecified indication (she began taking those for years but has no idea for how long). The patient previously received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Lot number: EN6202, Expiration date: unknown) via an unspecified route of administration, administered in left arm on 24Feb2021 at 16:30 pm (age at vaccination 60 years) as dose 1, single for COVID-19 immunization. The patient did not receive any other vaccines within 4 weeks prior to COVID vaccine. No additional vaccines were administered on same date of the Pfizer Suspect. The patient had received both dose of the Pfizer COVID vaccine and was tested and did not have any antibodies present. She asked about information for immunity of the Pfizer COVID Vaccine if she did not get immunity to it. After testing she asked if she had immunity to the Pfizer COVID vaccine and after testing had no immunity from the Pfizer COVID Vaccine. The caller wanted to know whether Pfizer had any studies specific for immune compromised individuals like her. On an unspecified date in Mar2021, patient experienced muscle pain for a little bit of time. She stated that the muscle pain began after the 2nd dose of the Pfizer COVID Vaccine and the pain was not that bad and it was not like she took anything for it and it did not interfere with anything and the pain resolved and it lasted a day and a half and thought it was from working out or something she did but then thought it was probably the vaccine and realized it came on suddenly while she was at work, stated the muscle pain began the day after the 2nd dose of the vaccine 24 hours after the 2nd dose. The patient underwent lab test which included Antibody test: negative (she did not have immunity from the Pfizer COVID vaccine) on 28Jun2021. She took both Pfizer COVID shots but she still had no antibodies for the SARS-COV-2. There was a product compliant. The outcome of event was resolved on an unspecified date in 2021.