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: ace inhibitors attending: chief complaint: bright red blood per rectum major surgical or invasive procedure: upper endoscopy colonoscopy tunnelled hemodialysis catheter history of present illness: 84 yo man with a pmh significant for cad, afib, esrd on hd, pvd, severe mitral regurg who p/w brbpr. he was recently hospitalized at the in for incision and drainage of a left foot hematoma. he was discharged to rehab on where he subsequently required intermittent blood transfusions. during the 24 hours prior to admissions, his hct dropped from 28 to 24 and was noted to have several episodes of grossly bloody stools with large clots. he received ns and 1 units prbcs with repeat hct of 21. he was sent to for further management. . in the ed, his pulse was 70 and his bp was 130s/70s. his stool was guaiac positive. no ng lavage was done. he was not transfused due to multiple antibodies. he was given protonix, vanco, levo, and flagyl. . he was admitted to the micu for further care. ng lavage was negative. has received 2 units of prbc since admission with hct stable for the past 24 hours, 25.3-28.5. . chest pain, sob, dizziness, abdominal pain. past medical history: 1)ischemic cardiomyopathy w/severe lv systolic dysfunction with ef of 30% 2)cad 3)severe mitral regurgitation 4)atrial fibrillation, s/p icd-not anticoagulated 5)peripheral disease, s/p bypass leg surgery 6)esrd on hd t/h/s (via r subclav permacath) 7)anemia on procrit and iron supplementation 8)? cva years ago with left facial numbness 9)hypothyroidism 10) s/p right above the knee popliteal bypass graft in and a left femoral popliteal artery bypass graft with revision that included the left femoral to anterior tibial artery jump graft in social history: smoked 1 ppd x 50 yrs, quit . reported heavy etoh use in past, none currently. currently at . lives with his wife in . 2 children living in .retired maintenance worker at . family history: nc physical exam: t: 96.9 bp: 172/45 p: 78 r: 21 100% on 2lnc 24 hour i/o: 2920/2168 gen: elderly male in nad, lying comfortably in bed heent: nc, at, anicteric, mm dry neck: supple lungs: rales on left lower base. cv: rrr, holosystolic systolic murmer heard best at the right sternal border abd: soft, nt/nd, +bs ext: no edema skin: eccymosis on arms. tophi on toes bilaterally. dressing over left foot. pertinent results: admission labs: 04:25am blood wbc-6.8# rbc-2.64* hgb-8.4* hct-25.0* mcv-95 mch-32.1* mchc-33.8 rdw-17.3* plt ct-159 04:25am blood neuts-72.9* lymphs-18.3 monos-4.5 eos-3.9 baso-0.4 04:25am blood pt-13.1 ptt-33.3 inr(pt)-1.1 04:25am blood glucose-97 urean-54* creat-3.8* na-136 k-4.6 cl-105 hco3-21* angap-15 04:25am blood calcium-7.9* phos-3.7 mg-2.0 06:19am blood albumin-2.4* calcium-7.8* phos-3.1 mg-1.7 04:37am blood cortsol-13.3 . most recent labs: 09:02am blood wbc-5.1 rbc-3.22* hgb-10.4* hct-30.0* mcv-93 mch-32.2* mchc-34.5 rdw-18.6* plt ct-152 09:02am blood plt ct-152 09:02am blood glucose-87 urean-38* creat-4.6* na-137 k-3.9 cl-102 hco3-24 angap-15 05:43am blood calcium-7.6* phos-3.8 mg-2.0 . . tagged rbc scan on : following intravenous injection of autologous red blood cells labeled with tc-m, blood flow and dynamic images of the abdomen for 60 minutes were obtained. a left lateral view of the pelvis was also obtained. blood flow images show increased tracer activity in the left upper quadrant which is due to uptake in an enlarged spleen. dynamic blood pool images show no evidence of active gastrointestinal bleeding. impression: no active gastrointestinal bleeding identified. splenomegaly. . chest x-ray on : the left-sided is seen with leads in unchanged position. a right hemodialysis line is seen with tip in the superior vena cava. the cardiomediastinal silhouette is within normal limits.a left retrocardiac opacity is less conspicuous on the current examination. impression: 1. left retrocardiac opacity has minimally improved and may represent atelectasis or pneumonia. . upper endoscopy : erythema, edema, friability in the stomach body, antrum and pylorus compatible with severe gastritis erosions in the stomach body small hiatal hernia otherwise normal egd to second part of the duodenum . colonoscopy : diverticulosis of the sigmoid colon and descending colon polyps in the throughout the colon angioectasias in the cecum otherwise normal colonoscopy to cecum brief hospital course: . # gi bleed: patient initially admitted to micu due to dramatic hematocrit drop. this subsequently stabilized after 2 units prbc transfusion. ng lavage was negative. patient was prepped and underwent esophagogastroduodenoscopy and colonoscopy. egd showed severe gastritis and colonoscopy showed numerous diverticuli and adenomatous polyps. tagged rbc scan was negative. likely multifactorial bleed due to above 3 causes, with diverticular bleed probably greatest contributor. the patient's hematocrit was relatively stable throughout the hospital stay. the patient received 2 more units of prbcs. patient is scheduled for follow-up with gi as an outpatient for removal of polyps. h. pylori antibody test was positive. triple therapy with ppi, amoxicillin, and clarithromycin (all renally dosed) was strated on to be continued for a total of 14 days. . # c. diff: patient developed diarrhea on hospital day 5. it was thought that the diarrhea was likely secondary to c. diff and he was emperically started on metronidazole on . c. diff toxin assay was sent and subsequently came back positive . he should continue on flagyl for at least 7 days beyond h. pylori triple therapy. . # hypotension: patient was initially hemodynamically stable on presentation, and in fact, became hypertensive later in micu course. his home regimen of antihypertensive was therefore restarted as follows: hydralazine, valsartan, metoprolol. imdur was restarted on . on hospital day 5 the patient had hypotensive episode with systolic bp between 80-90. fluid was given and bp medications were held to maintain stable systolic blood pressure >120. it was thought that the hypotensive episode was due to hypovolemia secondary to 1.6 kg fluid removed during hemodialysis earlier that day, as well as significant volume depletion secondary to his diarrhea from c. diff. no further hypotensive episodes were noted after fluid resuscitation. . # fever: on hospital day 5, patient had fever of 101. his fever was thought to be secondary to c. diff infection, as diarrhea was present at that time (see above). blood cultures were negative for several days, and still pending at the time of discharge. his temperature normalized after initiation of flagyl for c. diff. . # a fib: patient has a . rate was stable and he was continued on amiodarone. . # esrd: patient was dialyzed tu/th/sa via subclavian permacath. his hd catheter was repositioned on this admission. he was continued on nephrocaps, erythropoietin at dialysis and neurontin. the renal service followed him throughout this admission. next hd session planned for friday, . . # left foot hematoma: s/p i&d on his last admission by surgery. he was continued papain and becaplermin. he will follow up with as previously scheduled as an outpatient. . # hypothyroidism: continued levothyroxine . # access: picc placed prior to this admission. also had peripheral iv, and hd cath. tunnel line catheter cuff was found to be exposed on and a new line was placed by ir on . picc line was pulled prior to discharge. . # code status: full . # dispo: patient was discharged to rehab in stable condition on . . . medications on admission: morphine 3 mg iv q2h:prn tylenol prn albuterol neb prn tylenol w/codeine prn glycerin supp prn senna prn trazodone 25 mg qhs valsartan 80 mg daily hydralazine 25 mg q6h toprol 125 mg daily nephrocaps nystatin 6 ml po tid accuzyme ointment to foot daily insulin sliding scale imdur 30 mg daily levothyroxine 125 micrograms daily colace 100 mg tid neurontin 300 mg q48h aztreonam 0.125 grams q6h and at hemodialysis tiw becaplermin to wound daily epo at hd amiodarone 200 mg daily aspirin 325 mg daily atorvastatin 20 mg daily discharge disposition: extended care facility: - discharge diagnosis: primary: 1) gi bleeding 2) c. difficile infection 3) h. pylori 4) end-stage renal disease on hd 5) hypotension secondary: 1) atrial fibrillation 2) left foot hematoma discharge condition: stable, improved from the time of admission discharge instructions: please call your doctor or go to the er if you experience any worsening of your diarrhea, fever/chills, dizziness, nausea/vomiting, abdominal pain, or any other concern. weigh yourself every morning, md if weight > 3 lbs. adhere to 2 gm sodium diet followup instructions: 1) , md phone: date/time: 8:00; e suite gi rooms date/time: 8:00 2) , surgery (nhb) date/time: 3:15 3) please call the radiology department to set up a small-bowel follow through. call for an appointment. 4) please call your primary care doctor for a follow up appointment after discharge from rehab. procedure: other endoscopy of small intestine hemodialysis venous catheterization for renal dialysis colonoscopy diagnoses: anemia in chronic kidney disease end stage renal disease coronary atherosclerosis of native coronary artery mitral valve disorders acute posthemorrhagic anemia unspecified acquired hypothyroidism atrial fibrillation peripheral vascular disease, unspecified intestinal infection due to clostridium difficile unspecified gastritis and gastroduodenitis, with hemorrhage benign neoplasm of colon diverticulosis of colon with hemorrhage helicobacter pylori [h. pylori] orthostatic hypotension 

Answer: The patient is high likely exposed to