he does not have sensation in in his toes; his legs went wobbly; whammed down; he lost control of his muscles; Redness was very negligible; hit his head; broke his coccyx bone; lost all balance; achiness in his joints; Fourth Dose: 09Mar2022; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 83 year-old male patient received bnt162b2 (BNT162B2), administered in arm left, administration date 09Mar2022 (Lot number: FK9729, Expiration Date: 24Mar2022) at the age of 83 years as dose 4 (booster), 0.3 ml, single for covid-19 immunisation. Relevant medical history included: "COPD" (unspecified if ongoing), notes: Diagnosed probably before the year 2000.; "Hypotension" (unspecified if ongoing), notes: Diagnosed about 3 years ago, borderline, sometimes he has hypertension too.; "Neuropathy" (unspecified if ongoing), notes: About 10 years ago.; "one functioning lung" (unspecified if ongoing), notes: about two weeks after the surgery to remove the tumor.; "Tumor C2- C5", start date: 11Sep2001 (unspecified if ongoing), notes: Found out about the tumor 11Sep2001.; "hypertension" (unspecified if ongoing); "Surgery to take out a tumor C2- C5" (unspecified if ongoing). The patient's concomitant medications were not reported. Vaccination history included: Bnt162b2 (Dose: 01, Lot Number:  EL0140 Covered over with a label, can't see it for sure. , Dose: 0.3ml Injection, thinks it was the left arm, received it while sitting in the car, Expiration: 31Mar2021), administration date: 06Jan2021, when the patient was 82 years old, for COVID-19 immunization; Bnt162b2 (Dose: 02, Lot Number: EX931, Dose: 0.3m1 Injection into left arm, Expiration: 30Apr2021), administration date: 27Jan2021, when the patient was 82 years old, for COVID-19 immunization; Bnt162b2 (Dose: 03, Lot Number: EW0187, Dose: 0.3ml injection into left arm, Expiration: 31Aug2021), administration date: 19Aug2021, when the patient was 83 years old, for COVID-19 immunization. The following information was reported: DECREASED VIBRATORY SENSE (medically significant), outcome "unknown", described as "he does not have sensation in in his toes"; INCORRECT DOSE ADMINISTERED (non-serious) with onset 09Mar2022, outcome "unknown", described as "Fourth Dose: 09Mar2022"; ARTHRALGIA (medically significant) with onset 10Mar2022, outcome "unknown", described as "achiness in his joints"; BALANCE DISORDER (medically significant) with onset 11Mar2022, outcome "unknown", described as "lost all balance"; BALANCE DISORDER (medically significant), outcome "unknown", described as "his legs went wobbly"; FALL (medically significant), outcome "unknown", described as "whammed down"; FRACTURED COCCYX (medically significant) with onset 11Mar2022, outcome "unknown", described as "broke his coccyx bone"; MUSCLE DISORDER (medically significant), outcome "unknown", described as "he lost control of his muscles"; INJECTION SITE ERYTHEMA (medically significant), outcome "unknown", described as "Redness was very negligible"; HEAD INJURY (medically significant), outcome "unknown", described as "hit his head". The events "he does not have sensation in in his toes", "achiness in his joints", "lost all balance", "his legs went wobbly", "whammed down", "broke his coccyx bone", "he lost control of his muscles", "redness was very negligible" and "hit his head" were evaluated at the emergency room visit. The patient underwent the following laboratory tests and procedures: blood test: unknown results; computerised tomogram: unknown results; skull x-ray: unknown results; spinal x-ray: found the break of the coccyx bone, notes: They took x-rays of his lower spine and that is when they found the break of the coccyx bone.  Clinical course: Patient called to report that he saw a pharmacist he has known for years and he asked when could he get the 4th dose or booster dose, so he got the shot and it was a bit red. He had somewhat of a side effect from the second shot, he had flu like symptoms and went to bed and was fine the next day. This time he got the shot and the next day, Thursday he started getting achiness in his joints and went to bed early the achiness had somewhat there but improved but it was weird, he bent over to pick something up off of the floor, he bent over and lost all balance, his legs went wobbly, whammed down and broke his coccyx bone. Later in the day, the muscular strength returned. It was like some short circuited his muscles, no electricity or anything, he lost control of his muscles, he is 83 years old and six foot two inches and 177 pounds, not an obese person or anything like that, tries to work out five times a week. Patient was six foot five inches but gravity is an interesting thing, when he got old he started to compress. The ambulance sent him to the Emergency Room on Friday. Hard to move around because of his coccyx. Redness at site: no immediate effect, no soreness to arm. Redness was very negligible. Went to the hospital, asked why, they can't cast it they can't do anything, it is just going to a pain in the ass. Gets immunization shots every eight weeks and he gets a silver dollar sized redness, this was like a dime size, still has a little redness. Clarifies immunization shots as allergy shots. When he looked at the site of the booster shot he sees a band aid, he never took it off, states redness was really gone. Patient hit his head too, but nothing was broken there, he is very hard headed. Started getting achiness in his joints: when he woke up the next morning he had some achiness but it was highly diminished. Every joint in his body, even his toes, well he couldn't feel his toes because of neuropathy, he does not have sensation in in his toes. Patient only has one functioning lung and has COPD. His lung doesn't function because of the frenetic nerve was nicked during surgery. Surgery to take out a tumor C2- C5, he is getting old, two weeks after surgery his lung failed and he lost that lung. He has been going to a pulmonologist for a long time. In the emergency room, they took a fair amount of blood, and then put him into a machine, he thinks it was a CAT scan and then they took x-rays of his head, and down, they took x-rays of his lower spine and that is when they found the break of the coccyx bone. No additional vaccines administered on same date of the pfizer suspect. Redness to the site was covered by a bandage. The only thing he had prior vaccinations (within 4 weeks), which isn't a vaccine is that he got a low resistance level, immunity resistance is compromised, which was why he was at risk, but miraculously controlled because he takes Ayqvia, a nurse comes to his house every 4 weeks and infuses plasma, with high immunity level Plasma and he hasn't had pneumonia or bronchitis. NDC/lot/expiration unknown, They ship in the plasma, human plasma, not a medication.  No follow-up attempts are needed. No further information is expected.