tinnitus; hearing loss; The initial case was missing the following minimum criteria: Unspecified AE. Upon receipt of follow-up information on (29Mar2022), this case now contains all required information to be considered valid.   This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team for a Pfizer sponsored program (159558). The reporter is the patient.  A 67 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 09Apr2021 15:00 (Lot number: EW0150) as dose 2, single for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. Vaccination history included: Bnt162b2 (DOSE 1, SINGLE; Batch/lot number: ER2613, Left Arm), administration date: 19Mar2021, when the patient was 67 years old, for Covid-19 immunisation, reaction(s): "Partial Hearing Loss", "Tinnitus"; Bnt162b2 (DOSE 1, SINGLE; Batch/lot number: ER2613, Left Arm), administration date: 19Mar2021, when the patient was 67 years old, for COVID-19 Immunization, reaction(s): "sore arm"; Bnt162b2 (DOSE 1, SINGLE; Batch/lot number: ER2613, Left Arm), administration date: 19Mar2021, when the patient was 67 years old, for Covid-19 Immunization, reaction(s): "headache", "tired for a couple of weeks", "she had a humming sound like a fan". The following information was reported: DEAFNESS (medically significant), outcome "recovered", described as "hearing loss"; TINNITUS (non-serious), outcome "recovered", described as "tinnitus". The events "hearing loss" and "tinnitus" were evaluated at the physician office visit. The patient went to the doctor and they said she had hearing loss and couldn't tell what it was from. The tinnitus would get loud then fainter and the same thing with her hearing. The patient used her own ear phones with an app that tracks the hearing and stated it was accurate because she looked at the peaks and valleys. The patient underwent the following laboratory tests and procedures: protein total: (unspecified date) minus seventeen to eighteen hundred, notes: (units were not verified); sars-cov-2 antibody test: (26Apr2021) negative. Stated that patient had her spike protein checked 2 weeks after the second dose and it showed she had a pretty good reaction but there were no guidelines on if protected or not. The patient has had both vaccines and was due for the booster but didn't have it because last year when she had the first dose she had the typical reactions. The patient continued to have hearing loss for 3 months but it came back and the tinnitus was pretty much gone. She was struggling with the third vaccine deal. She could not be certain it was from the vaccine but the timeline she has means it couldn't be anything else. Stated that her hearing loss took three months but she already got better. She also stated that she does not know if their doctors found anything as well. Further stated that she was delaying her third dose and in the position of not losing her hearing again. She also mentioned a doctor from clinic who was a vaccinologist and virologist which she followed online and mentioned experienced tinnitus as well after getting the "covid vaccine." With that being said, she wanted to know if there is a test to be done to check her protection against the COVID virus, or any guidelines available.    No follow-up attempts are possible. No further information is expected.