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: history of present illness: the patient is a 79 year old white male with significant arteriosclerotic disease, last perfectly well in . had routine follow-up with primary care physician three weeks prior to admission and was found to have guaiac positive stools with a hematocrit of 36 without weakness or dizziness. the patient was referred for colonoscopy and had never had a colonoscopy prior to this time, , two weeks prior to admission, and was found to have (1) sessile polyp in cecum, (2) 4 cm mass in cecum, which was the source of bleeding, (3) diminutive polyp at splenic flexure, (4) pedunculated polyp in the rectum, (5) diverticulosis in the sigmoid colon, and (6) internal hemorrhoids. then patient found dr. for surgery. patient was diagnosed with mitral regurgitation and atrial fibrillation after patient suffered stroke in and began seeing dr. in cardiology, who started him on coumadin. his last ekg was showing atrial fibrillation. last echocardiogram showed bilateral atrial enlargement, , mitral valve normal, normal left and right ventricular function. p-mibi left ventricular ejection fraction 64%, within normal limits. patient had baseline electroencephalogram on day of admission showing generalized multi-focal slowing, nothing sustained or seizure-like, consistent with old strokes. past medical history: 1. prostate cancer, treated with radiation therapy .... last psa 1.2 which was one year prior to admission. 2. arteriosclerosis. 3. amaurosis fugax. 4. mitral regurgitation. 5. atrial fibrillation. 6. diphtheria in , world war ii. 7. cerebrovascular accident times one in . 8. transient ischemic attack times one in . past surgical history: 1. appendectomy at age nine. 2. lumbar laminectomy. 3. left carotid surgery in , left common carotid plus external carotid endarterectomy and intravascular patch angioplasty, tailored closure of internal carotid artery opening. allergies: penicillin (rash). family history: a brother had lung cancer and died at age 30 and was a smoker. social history: the patient is a boat builder, previously was an investment banker, sail maker ......level athlete, played hockey at . he has a 15 pack year smoking history, quit 20 years ago. social drinker, one to two beers daily, without intravenous drugs. originally, the patient had told us he was a social drinker and drank one to two beers a day but, later, it was found that the patient is a much heavier drinker and drinks two to three strong vodka drinks per day. medications on admission: coumadin 3 mg q. monday, tuesday, thursday, friday, saturday, 4 mg wednesday and sunday, patient had 2 mg for the last two days, digoxin 250 mcg q.d., lipitor 10 mg q.d., magnesium oxide 400 mg q.d., hydrochlorothiazide 25 mg one-half tablet q.d., folic acid 2 mg q.d., aspirin 81 mg q.d., b6 100 mg q.d., b12 100 mg q.d. review of systems: the patient has no fever, chills, no headaches, no nausea, vomiting, no shortness of breath, no chest pain, no abdominal pain, no frank blood in stool, patient does not notice change in stool color or caliber, no dysuria, hematuria, no weakness of extremities. physical examination: on physical examination, the patient was afebrile at 98.8 with a heart rate of 80 and blood pressure of 138/80 and respiratory rate of 18, oxygen saturation 98% in room air. head, eyes, ears, nose and throat: pupils equal, round, and reactive to light and accommodation, extraocular movements intact, head wrapped after eeg. neck: supple without lymphadenopathy, no jugular venous distention, no bruits. cardiovascular: irregularly irregular and muffled. lungs: clear to auscultation bilaterally. abdomen: soft, nontender, nondistended, positive bowel sounds, positive reducible umbilical hernia. rectal: guaiac negative, slightly enlarged prostate. extremities: warm and well perfused without cyanosis, clubbing or edema, pulses showed 2+ carotid, 2+ radial, 2+ femoral, 2+ anterior tibialis, 2+ dorsalis pedis bilaterally. neurologic examination: alert and oriented times three, cranial nerves ii through xii intact, gait normal. laboratory data: admission white blood cell count 10.5, hematocrit 41.5, platelet count 341,000, prothrombin time 17.2, partial thromboplastin time 26.7, inr 2, sodium 142, potassium 3.8, chloride 101, bicarbonate 31, bun 13, creatinine 1, glucose 126, calcium 9.3, magnesium 2.1 and phosphorous 4.4. electrocardiogram showed irregularly irregular rhythm, no acute st segment changes. chest x-ray showed mild emphysema with no acute cardiopulmonary disease. electroencephalogram showed baseline general multi-focal slowing, nonsustained, without seizure activity and consistent with old strokes. hospital course: the patient was admitted for symptomatic polyp and mass in cecum and was admitted for a left colectomy and placed on bowel prep and clear liquids the day prior to surgery. the patient was taken to the operating room on with a preoperative diagnosis of cecal cancer mass, postoperative diagnosis the same, procedure was a right colectomy. surgeon was dr. , assistants dr. , dr. . anesthesia was general endotracheal anesthesia, intravenous fluids 1,900 cc intraoperatively, estimated blood loss 50 cc, urine output 165 cc. findings: greater than 4 cm mass. complications: none. disposition: stable to the post anesthesia care unit. incidentally, the umbilical hernia was also repaired at the time of surgery. on postoperative day number one, the nasogastric tube was noted to be guaiac positive and the patient was placed on alternating carafate and mylanta for gastric protection. the patient's patient controlled analgesia pump was discontinued and the patient was alert and oriented from 11:00 a.m. to 2:00 p.m. on which is postoperative day number two. however, he was somewhat confused on the morning of postoperative day number two and it was attributed to being the patient controlled analgesia pump. this was then discontinued and the patient was lucid from 11:00 a.m. to 2:00 p.m. and, after 2:00 p.m., continued to become confused. blood sugar was 128, the patient was afebrile with stable vital signs with an oxygen saturation of 95% in room air. the senior resident was notified and the altered mental status was worked up by the neurology on-call resident and thought to be secondary to dilaudid use. however, on further history, the patient was found to be a heavy drinker and these changes in mental status were attributed to delirium tremens. the patient was started on thiamine and ativan. his mental status continued to be altered and the patient was transferred to the intensive care unit on , which was postoperative day number two, for closer neurological monitoring. as the patient received scheduled ativan, the patient continued to improve and was tolerating sips on postoperative day number three, however, continued to require restraints. on , the patient's sedating medications were held and he was much more oriented. the patient began passing flatus on and was transferred to the floor on that day. the patient was much more alert and oriented on and was stable for home after already being on his home regimen of coumadin for the past for days prior to discharge. the patient was restarted on all of his home medications prior to discharge and was able to tolerate orals. the patient was discharged on postoperative day number six and was placed on oral vancomycin because of a positive clostridium difficile toxin while he was in the unit. the patient was discharged without event. final diagnoses: 1. status post right colectomy. 2. clostridium difficile. 3. intraoperative electroencephalogram. 4. delirium tremens. 5. prostate cancer, status post radiation therapy. 6. arteriosclerosis with amaurosis fugax. 7. mitral regurgitation. 8. atrial fibrillation. 9. cerebrovascular accident. 10. transient ischemic attack. 11. diphtheria. the patient as instructed to call his doctor if he experienced a temperature greater than 101.4 or if he experienced any redness or swelling around the wound site. he was also encouraged to continue to walk and not to lift anything heavier than ten pounds for a period of six weeks. he was also encouraged not to drive and told it was normal to experience fatigue for at least two weeks. he was given dr. postoperative instruction sheet for further instructions. discharge medications: cyanocobalamin 100 mg one-half tablet p.o.q.d. thiamine 100 mg p.o.q.d. lopressor 50 mg p.o.b.i.d. vicodin 5/500 mg p.o.q.4-6h.p.r.n. pain. pepcid 20 mg p.o.b.i.d. digoxin 250 mcg p.o.q.d. coumadin 1 mg tablets 3 mg p.o.q. monday, tuesday, thursday, friday and saturday and 4 mg on wednesday and sunday. vancomycin 125 mg p.o.q.6h. times 12 days. disposition: to home. condition on discharge: good. follow-up: the patient was instructed to follow up with dr. in his office in one week, and to call for an appointment. , m.d. dictated by: medquist36 procedure: open and other right hemicolectomy other open umbilical herniorrhaphy diagnoses: mitral valve disorders atrial fibrillation personal history of malignant neoplasm of prostate other opiates and related narcotics causing adverse effects in therapeutic use drug-induced delirium benign neoplasm of colon umbilical hernia without mention of obstruction or gangrene generalized and unspecified atherosclerosis transient retinal arterial occlusion 

Answer: The patient is high likely exposed to