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: nkda past medical history: cad, cabg ; prostate cancer; nephrolithiasis; spinal stenosis with s/p l4-l5 laminectomy; pud; hypercholesterolemia; osteoarthritis; cri, bl creat -1.4-1.5; extensive fiverticulosis; duosdenal ulcer perforation; cholelithiasis; multiple renal cysts; hoh; alxheimer's disease; s/p appy. pt had brbpr x2. in ed hct was 41.2 and he was additted to 10 for observation and colonoscopy today. this am he had a large amount of brb in the toilet and his b/p fell to 97/56 (bl 122/70) and his hct fell to 36.9. he was transfered to the micu for further management. gi: pt abd is soft and non tender, (+) bowel sounds. he has not had any stool since admission. he went to red tag studies w/i 30 min of arriving on the floor where they say some pocket of pooling in the rectum. plan for colonoscopy in am. he has been having clear liquids without any difficulty swallowing. cardiac: b/p has been 115-125/70's, hr 60's paced. resp: rr 20's, o2 sats on 2l nc with o2 sats 100%. breath sounds clear. gu: pt voided clear yellow urine while at red tag studies. neuro: pt has a decreased short term. he seems mentally intact, being able to remember life details. he mae without difficulty. he is hoh and wears hearing aids. social: son and daughter in to visit while in red tag studies. his wife called and spoke to him over the phone. procedure: colonoscopy diagnoses: acute posthemorrhagic anemia hypertensive chronic kidney disease, unspecified, with chronic kidney disease stage i through stage iv, or unspecified personal history of malignant neoplasm of prostate coronary atherosclerosis of unspecified type of vessel, native or graft aortocoronary bypass status hypertrophy (benign) of prostate without urinary obstruction and other lower urinary tract symptom (luts) chronic kidney disease, unspecified hypotension, unspecified alzheimer's disease diverticulosis of colon with hemorrhage tachycardia, unspecified 

Answer: The patient is high likely exposed to