This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team, Program ID: (Unknown). The reporter is the patient.  A 55-year-old female patient received BNT162b2, BNT162b2 omi ba.4-5 (BNT162B2, BNT162B2 OMI BA.4-5), as dose 3 (booster), single (Batch/Lot number: unknown) for covid-19 immunisation. The patient's relevant medical history included: "damage in smooth muscle in pancreas" (unspecified if ongoing); "diabetic" (unspecified if ongoing). The patient's concomitant medications were not reported. Vaccination history included: Bnt162b2 (DOSE 1, SINGLE), for COVID-19 Immunization; Bnt162b2 (DOSE 2, SINGLE), for COVID-19 Immunization. The following information was reported: MULTIPLE FRACTURES (medically significant), outcome "unknown", described as "her knees breaking her bones"; GAIT DISTURBANCE (non-serious), outcome "unknown", described as "she can't even walk because of the pain and that she feels like she's about to fall after 3 steps."; DYSSTASIA (non-serious), outcome "unknown", described as "she couldn't even get up."; FEELING ABNORMAL (non-serious), outcome "unknown", described as "when I took the booster it was terrible"; COUGH (non-serious), outcome "unknown", described as "Coughing"; BONE PAIN (non-serious), OSTEOPOROSIS (non-serious), outcome "unknown" and all described as "I had discovered aches and that's why my bones were very greasy; very fragile"; PAIN IN EXTREMITY (non-serious), ARTHRALGIA (non-serious), outcome "unknown" and all described as "having pain in my knees, in my legs, its like I want to, its like my joint wants to break"; LOSS OF PERSONAL INDEPENDENCE IN DAILY ACTIVITIES (non-serious), outcome "unknown", described as "I cannot work"; MALAISE (non-serious), outcome "unknown", described as "I was sick"; MYALGIA (non-serious), outcome "unknown", described as "muscle problems in the legs were so serious".  Clinical course: is experiencing muscle problem, coughing and nail problems and wanted to know if there are other people experiencing these side effects. Caller confirmed this happened with the Pfizer COVID-19 Vaccine Booster for adults. She added that the muscle problems in the legs were so serious that she couldn't even get up. She felt struggling in bones and muscle.  She described this as a serious problem, that she can't even walk because of the pain and that she feels like she's about to fall after 3 steps. Then she added that since she can't walk, she hasn't been able to work and that her HCP and company won't let her be at sick leave since they don't consider this problem to be as serious as she believes. She had discovered aches and that's why her bones were very greasy; very fragile. She couldn't get up, couldn't get up without absolute help. Reported also as "having pain in my knees, in my legs, its like I want to, its like my joint wants to break. My knees, both knees to be talking first, when I took the booster it was terrible, coughing. Seriously, I was sick and later I had discovered aches and that's why my bones were very greasy to lost of people, I want to spend, 'I want to break' but very fragile. I have taken but couldn't get up, couldn't get up without absolute help."   The information on the batch/lot number for BNT162b2, BNT162b2 omi ba.4-5 has been requested and will be submitted if and when received.