This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. A 95 year-old female patient received bnt162b2 (BNT162B2), administered in arm right, administration date 11Mar2021 (Lot number: EN6206) at the age of 94 years as dose 1, single for Covid-19 immunisation. The patient had no relevant medical history. The patient's concomitant medications were not reported. The following information was reported: GAIT DISTURBANCE (non-serious) with onset Mar2021, outcome "not recovered", described as "get problems walking/after the first dose, about 5 days afterwards the legs and walking issues/ was loosing control of the muscles in the legs and he was having to help her walk"; LIMB DISCOMFORT (non-serious) with onset Mar2021, outcome "not recovered", described as "After the first shot he noticed her right foot was not responding properly and turning in a little bit"; MOVEMENT DISORDER (non-serious) with onset Mar2021, outcome "not recovered", described as "after getting the shots she has been having problems with her feet moving along and it's all getting worse and worse"; MUSCULAR WEAKNESS (non-serious) with onset Mar2021, outcome "not recovered", described as "was loosing control of the muscles in the legs and he was having to help her walk". The events "get problems walking/after the first dose, about 5 days afterwards the legs and walking issues/ was loosing control of the muscles in the legs and he was having to help her walk" and "was loosing control of the muscles in the legs and he was having to help her walk" were evaluated at the physician office visit. Additional information: Clinical course: It was reported that patient received both doses of the Pfizer-BioNTech Covid-19 vaccine and a week after she started taking it she started to get problems walking, having cognitive issues pretty much since getting the shots, she has been losing control of the muscle of her legs and it is frightening to see this process. Reporter wasn't to know how people could be fully vaccinated and still get Covid. Second vaccine was about 5 months ago (lot number: ER8732), 01Apr2021, he guesses that was the recommended time for her to get that. No other vaccines given that same day and no problems with vaccines in past. She got the vaccine because she was concerned, she might get them sick, or she could get sick, and they were coming in on an airplane. They live on the beach and since Covid and quarantine he has been very recluse and was concerned. They have a bunch of visitors and were trying to minimalize potential of getting Covid and fear of the problems. States the cognitive issues started after the second vaccine. He noticed after the first dose, about 5 days afterwards the legs and walking issues. Prior to the shot, states she is not a roller stoker, but she was using a walker. After the first shot he noticed her right foot was not responding properly and turning in a little bit. Does not know if it's just her time of life where things or if things are just a coincidence. He goes with her when she goes to the car, or the doctors and he noticed that after getting the shots she has been having problems with her feet moving along and it's all getting worse and worse. Again, mentions he does not know if it's this is just a part of getting old. He has been with other seniors in their family, his grandmother, aunts, uncles and has not seen anything like this. Knows that anything can happen to any family member, but his family has excellent longevity. Patient did not receive any previous immunization with the Pfizer vaccine considered as suspect and not have any additional vaccines administered on same date of the Pfizer suspect. No follow-up attempts are possible. No further information is expected.