felt sick for a couple of days; Dry cough; after he was administered 2 doses of Pfizer Vaccine for Covid: he was diagnosed with COVID; after he was administered 2 doses of Pfizer Vaccine for Covid: he was diagnosed with COVID; he wasn't feeling right/feeling absolutely miserable; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 58 year-old male patient received bnt162b2 (BNT162B2), administered in arm right, administration date 20May2021 14:20 (Batch/Lot number: unknown) at the age of 58 years as dose 2, single and administered in arm right, administration date 13Apr2021 14:20 (Lot number: BR8731) as dose 1, single for covid-19 immunisation. Relevant medical history included: "Type II Diabetes", start date: 2006 (ongoing), notes: Onset or diagnosis when son was born; "Sinusitis", start date: 11Sep2001 (ongoing), notes: Pertinent Details: Diagnosed after 11Sep, patient was a first responder. Concomitant medication(s) included: METFORMIN ER taken for type 2 diabetes mellitus (ongoing); TRULICITY taken for type 2 diabetes mellitus (ongoing); HUMALOG taken for type 2 diabetes mellitus. The following information was reported: VACCINATION FAILURE (medically significant) with onset 02Jan2022, outcome "unknown", COVID-19 (medically significant) with onset 02Jan2022, outcome "recovered with sequelae" (Jan2022) and all described as "after he was administered 2 doses of Pfizer Vaccine for Covid: he was diagnosed with COVID"; FEELING ABNORMAL (non-serious) with onset 31Dec2021, outcome "not recovered", described as "he wasn't feeling right/feeling absolutely miserable"; ILLNESS (non-serious), outcome "recovered", described as "felt sick for a couple of days"; COUGH (non-serious), outcome "recovering", described as "Dry cough". The patient underwent the following laboratory tests and procedures: blood glucose: (unspecified date) blood sugar levels numbers would go up and down; glycosylated haemoglobin: (unspecified date) unknown results; sars-cov-2 test: (31Dec2021) negative; (02Jan2022) positive. Therapeutic measures were taken as a result of cough.  Clinical Course: The patient who called to report events that occurred after he was administered 2 doses of Pfizer Vaccine for Covid: he was diagnosed with COVID; and positive reaction of his blood sugar levels have leveled out, improved. COVID: Onset of symptoms where he started feeling funny late Thursday night: 30Dec2022, he wasn't feeling right. At the time he thought it could just be the power of suggestion because a lot of people were saying they were sick or had COVID. He was exposed to people who were positive for COVID several times; his whole base for the past 3 weeks people have been catching COVID which they are assuming is Omicron. By 31Dec2021 he was feeling absolutely miserable. He took a COVID home test on 31Dec2021 which was negative for COVID. He then took a COVID PCR test on 02Jan2022 which was positive for COVID-he received the results information on 03Jan2022. He initially reported that he felt sick for a couple of days and then kind of got through it; but clarified that he does have ongoing but improved dry cough from COVID. Dry cough: Described as kind of a dry cough; this is the only lasting effect of COVID that he is aware of. Dry cough does not happen all the time; occurs sometimes during the day depending on if the weather changes, or if he is laying on his back he will start to cough. Caller was prescribed Benzonatate 100mg capsules by the Physician as treatment for this event. only lasting effect, kind of dry cough, not all the time, but mostly the dry cough sometimes during the day depending on temperature changed or laying on back start to cough. improved over time, but still ongoing.  Positive reaction: blood sugar levels have leveled out, improved: Caller explained historical information that he was diagnosed with Type II Diabetes in 2006. He has been on Omnipod Humalog insulin with Dexcom G6 monitor, Metformin and Trulicity for the Type II Diabetes for at least 1 year. What he noticed after getting through COVID, starting around 03Jan2022 or 04Jan2022 was that his blood sugar levels leveled out, improved. This occurred without any change in his diet or exercise or anything like that. Before this change he had been monitoring his Type II Diabetes, using Dexcom G6 monitor and his blood sugar levels numbers would go up and down; sometimes they looked more like a heart rate monitor where he would get a lot of spikes up and down. Since around 03Jan2022 or 04Jan2022 the Dexcom G6 monitor blood sugar levels numbers look more like a soft wave; his blood sugar levels numbers have been what he would consider in the normal range big time; and he has been able to stay in that normal range without no need to bolus insulin with carbs like he normally does. He didn't change his eating habits, in fact in a few cases he tried to eat badly to see if the blood sugar levels numbers would jump up and they do not jump up which is just odd. He knows if he ate like a whole bunch of French fries or high carb food his blood sugar levels numbers would zip up in the past, but they no longer do that, his blood sugar levels numbers stay leveled out even after eating something high carb.Dose change: He was going to take the booster 31Dec2021, but because he was feeling sick with what would later be diagnosed as COVID, he did not get the booster dose.   Description of Product Complaint: Patient administered 2 doses Pfizer Vaccine for Covid on 13Apr2021 and 20May2021.Diagnosed positive for COVID on COVID PCR test 02Jan2022;symptom onset was 30Dec2021. Also reported positive reaction of blood sugar levels have leveled out,improved since Pfizer Vaccine for Covid.P fizer Vaccine for Covid:1st:Lot:BR8731,NDC/Expiry:Unknown,not on picture of CDC vaccine record card caller had with him. 2nd:Lot/NDC/Expiry:Unknown,did not take picture of CDC vaccine record card after 2nd dose. He was exposed to people who were positive for COVID several times. Concomitant products for Type II Diabetes:Metformin ER:750mg ER tablet-2 tablets daily-Start unknown other than at least 1 year ago. L ots/NDCs/Expiries :Unknown,caller did not have product with them at time of call. Trulicity:3mg/0.5mL-SDP 0.5mL injection once a week every Sunday-He was on 1.5mg at one point;Start unknown other than at least 1 year ago. Lots/NDCs/Expiries:Unknown,caller did not have product with them at time of call. Omnipod Humalog-dose Unknown other than as needed,Doctor set up different levels depending on time of day;then patient is supposed to do a bolus relative to carb calculations as needed. He does not need to bolus anymore:Lots/NDCs/Expiries:Unknown,caller did not have product with them at time of call.  The lot number for bnt162b2 was not provided and will be requested during follow up.