Consider the following medical report that includes the patient's historical health records. Use it to predict the disease that the patient is high likely exposed to. 

 Medical Report: allergies: no known allergies / adverse drug reactions attending: chief complaint: liver failure major surgical or invasive procedure: - orthotopic liver transplantation history of present illness: 51 year old male who is status post olt on complicated by conduit thrombosis resulting in graft failure.patient has been well with no recent illnesses. his baseline diarrhea has been stable. denies any fevers, chills, nausea, vomiting, abdominal pain, urinary symptoms or respiratory symptoms. past medical history: uc, primary sclerosing cholangitis, portal htn, esophageal varices (scoped ?????? g1 esophageal, g1 w/portal htn) past surgical history: lap umbo hr (narahari), lap umbo hr () social history: he had a tattoo back in college. no transfusions. no iv drug use. no recreational drug use. no tobacco. he has had rare alcohol use in the last 15 years, social in the past. he lives with his wife and his teenage son; aged 17. he has a grown daughter aged 29, who lives nearby. family history: significant for a father who had liver disease, it is unclear whether he also had primary sclerosing cholangitis. no other family history. physical exam: gen: nad heent: mmm no lesions cv: rrr no mrg resp: ctab no wrr abd: soft, nt, appropriately tender over incision. no guarding or rebound wound: abd incision and drain sites clean and dry with no erythema or drainage ext: no le edema pertinent results: 04:42am blood wbc-3.2* rbc-3.13* hgb-9.6* hct-28.0* mcv-89 mch-30.6 mchc-34.2 rdw-15.3 plt ct-116* 04:42am blood pt-12.6 ptt-22.0 inr(pt)-1.1 03:00am blood fibrino-520* 04:42am blood glucose-154* urean-35* creat-1.3* na-136 k-4.6 cl-101 hco3-28 angap-12 04:42am blood alt-57* ast-29 ld(ldh)-219 alkphos-193* totbili-0.7 04:42am blood albumin-2.8* calcium-8.8 phos-2.9 mg-1.8 04:42am blood tacrofk-6.4 liver duplex : findings: there is normal hepatopetal flow within the main, right, left, as well as right anterior and posterior branches of the portal veins. the left, middle, and right hepatic veins demonstrate normal venous waveforms with normal directional flow. the main, left and right hepatic arteries demonstrate normal arterial waveforms with normal range resistive indices. there is no evidence of stricture. impression: normal doppler vascular examination of the liver. brief hospital course: pt was admitted for olt on . the operation went well with no complications, see operative report for details. the patient was then transferred to the sicu in good condition. he stayed there overnight with no significant events. he was extubated on pod 2, was then given a clear liquid diet and transferred to the floor later in the evening. a liver duplex was found to be normal. his diet was advanced to regulars on pod 3. on pod4 he was tranfused 2u prbc's for a hct of 24, for which he responded appropriately. a roux tube cholangiogram showed patent bile ducts. by pod 5 the patient had all his drains removed, was ambulating and voiding independently, and his pain was well controlled with oral medications. he was discharged on oral lasix for further management of lower extremity edema. medications on admission: fluconazole 400', prednisone 15', docusate 100", famotidine 20", bactrim 400/80', oxycodone, mmf 500", valganciclovir 900', furosemide 20', augmentin 500/125 tid, tacrolimus 2", insulin sliding scale, caltrate 600'. discharge medications: 1. fluconazole 200 mg tablet sig: two (2) tablet po q24h (every 24 hours). 2. prednisone 20 mg tablet sig: one (1) tablet po daily (daily). 3. docusate sodium 100 mg capsule sig: one (1) capsule po bid (2 times a day). 4. famotidine 20 mg tablet sig: one (1) tablet po bid (2 times a day). 5. oxycodone 5 mg tablet sig: 1-2 tablets po q4h (every 4 hours) as needed for pain. disp:*30 tablet(s)* refills:*0* 6. furosemide 20 mg tablet sig: one (1) tablet po daily (daily). disp:*14 tablet(s)* refills:*0* 7. sulfamethoxazole-trimethoprim 400-80 mg tablet sig: one (1) tablet po daily (daily). 8. mycophenolate mofetil 500 mg tablet sig: two (2) tablet po bid (2 times a day). 9. aspirin 325 mg tablet sig: one (1) tablet po daily (daily). 10. valganciclovir 450 mg tablet sig: two (2) tablet po daily (daily). 11. tacrolimus 1 mg capsule sig: one (1) capsule po q12h (every 12 hours). 12. insulin regular human 100 unit/ml solution sig: follow sliding scale injection asdir (as directed). 13. tacrolimus 5 mg capsule sig: one (1) capsule po twice a day. discharge disposition: home discharge diagnosis: s/p olt discharge condition: mental status: clear and coherent. level of consciousness: alert and interactive. activity status: ambulatory - independent. discharge instructions: you were admitted for an elective liver transplantation. your operation went well with no complications, and you were deemed ready for discharge 6 days later. you need to have labs drawn every monday and thursday. you can shower with soap/water. pat dry. do not apply ointment/powder/lotion to incision place bandages as needed for drainage, but make sure to notify your surgeon if there is a lot of drainage or warmth/redness around your incision sites. your staples will come out at your follow up appointment. no driving while taking pain medication no heavy lifting/straining call the transplant office if you have any of the following warning signs: fever, chills,nausea, vomiting, jaundice, inability to take any of your medications, increased incision pain, increased abdominal distension, incision appears red or has drainage/bleeding followup instructions: provider: , md phone: date/time: 10:00 provider: , md phone: date/time: 2:40 provider: , md phone: date/time: 9:30 procedure: venous catheterization, not elsewhere classified other transplant of liver other lysis of peritoneal adhesions other cholangiogram diagnoses: hyperpotassemia unspecified essential hypertension portal hypertension peritoneal adhesions (postoperative) (postinfection) embolism and thrombosis of other specified artery complications of transplanted liver surgical operation with transplant of whole organ causing abnormal patient reaction, or later complication, without mention of misadventure at time of operation hepatic infarction personal history of other diseases of digestive system 

Answer: The patient is high likely exposed to