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: service:medicine history of present illness: this is a 77-year-old male with a history of diabetes mellitus, chronic renal failure on hemodialysis, sent from dialysis center for change in mental status. nephrocaps one once daily, zestril 20 mg twice a day, renagel 2400 three times a day, niferex 150 once daily, enteric-coated aspirin one once daily, tums one twice a day, cardizem 180 once daily, lopressor 100 once daily, zyprexa 10 twice a day. hospital course: he was stable, and his only symptoms in the temperature of 102.1, and mild hyperkalemia with a potassium of 6.0. he was worked up for fever. urinalysis was negative. blood cultures and chest x-ray were negative. ct of the abdomen showed colitis in the right lower quadrant vs. ischemic bowel. the patient was started on flagyl and levofloxacin.cxr also suggested possible rml infiltrate. a head ct and right hip film were performed, as the patient was found next to his bed a week or two ago, confused. both of these were negative. the patient's white count decreased over time, and he remained afebrile. the levofloxacin 250 every other day and flagyl 500 by mouth three times a day seemed to be having some effect, though the source of the patient's colitis remained unidentified. on , about one hour after hemodialysis, the patient had a large lower gastrointestinal bleed with bright red blood per rectum. mental status, when evaluated, was baseline. blood pressure was 100 to 110 systolic, when it had been running 150 to 180 systolic. heart rate was now in the 60s to 80s. intravenous fluids were started at 200 cc/hour. a 16 gauge intravenous was placed in the left medial aspect of the left leg. nasogastric lavage was negative for blood or coffee grounds. hematocrit decreased from 35 to 33, and the patient was transfused two units of blood in the medical intensive care unit. a tagged red blood cell scan was performed, which showed diffuse blood in the cecum. while in the medical intensive care unit, the patient was hypertensive and had a labetalol drip. when he returned to the floor, he was started on zestril 40 twice a day, and toprol xl 100 once daily, as well as cardizem. further gastrointestinal workup was postponed according to gastroenterology consult, as this was felt to be addressable as an outpatient by colonoscopy in a few weeks' time. all of the patient's medications which could affect mental status were held, including haldol, benadryl, and he became more clear over time. the aspect of delirium which seemed to be present before was no longer there, and it seemed the patient had a baseline dementia which was now unmasked. dr. had a conversation with the family, which resulted in the patient having do not resuscitate/do not intubate status, and the family agreed that the patient should have long-term care due to dementia and chronic gait instability. he completed his 14 day course of levofloxacin and flagyl. he was seen by physical therapy and occupational therapy and speech and swallow due to concerns about aspiration risk. pt had video swallow which showed delayed oropharyngeal clearing without evidence of aspiration. pt has difficluties with pills so advised to crush these and put in pureed foods. pt is to follow up with dr. of gastroenterology for an outpatient colonoscopy in two or three weeks' time. he is also to f/u with dr. for renal and primary care within the next few weeks. pt also has type 2 diabetes. he came in on insulin regimen. in house he had a few episodes of hypoglycemia. his standing insulin dose was discontinued and he has had stable glucose with rare requirement for insulin. woudl maintain on sliding scale of insulin and re-start insulin only if sugars trend upward with improvment in diet. condition on discharge: stable discharge diagnosis: 1. multi-infarct dementia with superimposed delirium secondary to medications and infection. 2. focal colitis of cecum ?infectious vs. ischemic vs other etiology 3. hypertension 4. gait instability likely related to prior cva and deconditioning 5. esrd on hemodialysis with hyperphosphatemia 6. rml pneumonia-resolved 7. sarcoid-pulmonary-old 8. type 2 dm c/b hypoglycemia, now resolved. discharge disposition: discharged to skilled nursing facility/long-term care discharge medications: toprol xl 100 mg by mouth once daily, zestril 40 mg by mouth twice a day, protonix 40 mg by mouth once daily, tiazac 180 mg twice a day,flagyl 250 tid for 2 days,tums 1 tab po bid,renagel 2400 tid,niferex 150 qd, nephrocap 1 qd , m.d. dictated by: medquist36 procedure: hemodialysis hemodialysis hemodialysis other irrigation of (naso-)gastric tube diagnoses: pneumonia, organism unspecified other and unspecified noninfectious gastroenteritis and colitis anemia, unspecified other persistent mental disorders due to conditions classified elsewhere hypertensive chronic kidney disease, unspecified, with chronic kidney disease stage v or end stage renal disease disorders of phosphorus metabolism diabetes with other specified manifestations, type ii or unspecified type, not stated as uncontrolled hemorrhage of gastrointestinal tract, unspecified delirium due to conditions classified elsewhere 

Answer: The patient is high likely exposed to