mild chronic parenchymal non-specific interstitial lung changes; I had the COVID-19 vaccine last AUG, not realizing that, when I had it, I was positive to COVID-19.; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A male patient received BNT162b2 (BNT162B2), in Aug2021 as dose 1, single (Batch/Lot number: unknown) for covid-19 immunisation. The patient's relevant medical history included: "Covid-19" (unspecified if ongoing), notes: He had COVID-19 last year and ended up hospitalized. The patient's concomitant medications were not reported. The following information was reported: COVID-19 (hospitalization) with onset Aug2021, outcome "recovering", described as "I had the COVID-19 vaccine last AUG, not realizing that, when I had it, I was positive to COVID-19."; INTERSTITIAL LUNG DISEASE (hospitalization, medically significant), outcome "unknown", described as "mild chronic parenchymal non-specific interstitial lung changes". The patient was hospitalized for covid-19, interstitial lung disease (hospitalization duration: 11 day(s)). The patient underwent the following laboratory tests and procedures: SARS-CoV-2 test: Positive, notes: I was positive; X-ray: mild chronic parenchymal non-specific interstitial, notes: I came home with portable oxygen. I had an X-ray, and the results show mild chronic parenchymal non-specific interstitial lung changes. Therapeutic measures were taken as a result of covid-19. Clinical course: Caller stated that he would like to get information to make a choice. He had COVID-19 last year and ended up hospitalized. He suffered lung damage: diffuse chronic lung changes with interstitial marking. He would like to know if he should get the COVID-19 vaccine, because he had received varied opinions from his HCPs. Caller confirmed the previous information that he had the COVID-19 vaccine last AUG, not realizing that, when he had it, he was positive to COVID-19. 4 days later he came down with the virus. He was in the hospital for 11 days. He was never intubated; his oxygen levels were low, but it could be fixed with supplemental oxygen. He came home with portable oxygen. He had an X-ray, and the results show mild chronic parenchymal non-specific interstitial lung changes. He have been getting conflicting information from my HCPs. One said he should get the vaccine, and the other said he should not get it. He haven't received any other vaccine other than the one he got last year. Patient asked that if he did not get it, was that going to put him in a situation where he don't recover? Would it affect his damaged lungs? he was conflicted". He stated that his pneumonologist said it was up to him; he didn't want to compromise himself". He had COVID 19 and was admitted to the hospital last year. He needs guidance on getting the COVID vaccine. He had been getting conflicting answers from different doctors he had seen. After having COVID, his x-ray results showed damaged lungs. He has diffuse chronic lung changes with interstitial markings in his lungs.   The information on the batch/lot number for BNT162b2 has been requested and will be submitted if and when received.