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: medications on admission: 1. aspirin. 2. atenolol 50 mg q.d. 3. lipitor 20 mg q.d. 4. atrovent two q.d. 5. coumadin two q.d. 6. citrucel q.d. 7. multivitamin. 8. protonix 40 q.d. 9. actigall 250 b.i.d. 10. prednisone 40 mg q.d. allergies: the patient has no known drug allergies. physical examination on presentation: in the emergency department, patient's vital signs were a temperature of 97.4, pulse 78, blood pressure 181/98, respirations 20, and sating 97% on room air. white blood cell count was 11.2, hematocrit 48.8, platelets 181. pt 12.0, inr 1.0, ptt 20.7. sodium 141, potassium 3.3, chloride 98, co2 32, bun 31, creatinine 1.6, and a glucose of 283. al7 176, ast 21, amylase 71, alkaline phosphatase 165, total bilirubin 1.2. kub on admission showed colonic distention and stool and air in the rectum distal colon. clinical course: this patient originally presented on with an approximately six week history of pruritus, 12 pound unintentional weight loss, dark urine, and light stools. at that time, he was noted to have increased lfts, so ercp was performed on . no obstruction or lesion was found, although a stent was placed ultimately leading to no relief. subsequent workup by gi hepatology showed that the patient had autoimmune hepatitis, and liver biopsy was found to be consistent with this. patient was then started on prednisone with relief of symptoms. on the friday prior to admission, the patient had his stent removed. the following morning at approximately 3 a.m., the patient awoke constipated with diffuse abdominal pain radiating to the back, steady, but not crampy. there is no change in the pain, intensity, or quality based on position, eating, or activity. there was associated nausea and vomiting during the entire morning and following day. ct scan performed that morning showed uniformly dilated colon with air in the colon wall (pneumatosis). air was also seen in the portal system and small amount of air tracking along the colon wall. based on the these results, the patient was started immediately on iv antibiotics, and transferred to the surgical intensive care unit. from the intensive care unit, the patient underwent a right hemicolectomy, with creation of a diverting ileostomy and mucus fistula. following the surgery on the , patient returned to the intensive care unit and was paced on the ventilator for respiratory support. on postoperative day three, on , the patient was successfully extubated and his supportive requirements were gradually decreased. on , the patient was transferred from the intensive care unit to a normal patient care floor. on the floor, he continued to progress well with bowel function gradually returning over the next several days. on , his diet was advanced from sips to clear liquids to full liquids and ultimately soft foods. he tolerated all of this without problem or episode. following a physical therapy consult and evaluate on and conferring with the attending surgeon, it was felt that the patient was a suitable candidate for discharge. prior to his departure, he completed full training with both the wound care nurse and the ostomy nurse at the . condition on discharge: on discharge, patient is stable, tolerating full p.o. discharge status: patient is discharged to home with visiting nursing. discharge diagnoses: 1. status post hemicolectomy for ischemic bowel. 2. autoimmune hepatitis. 3. coronary artery disease. 4. hypercholesterol. 5. copd. 6. hypertension. 7. left carotid occlusion. 8. gastritis. 9. non-insulin dependent-diabetes mellitus. 10. raynaud's. 11. autoimmune hepatitis. 12. cholelithiasis. 13. idiopathic pleural effusions. medications on discharge: 1. aspirin. 2. atenolol 50 mg q.d. 3. lipitor 20 mg q.d. 4. atrovent two q.d. 5. coumadin two q.d. 6. citrucel q.d. 7. multivitamin. 8. protonix 40 q.d. 9. actigall 250 b.i.d. 10. prednisone 40 mg q.d. 11. levofloxacin 500 mg q.d. x6 days. 12. flagyl 500 mg t.i.d. also for six days. followup: the patient is scheduled to see dr. in clinic on thursday, . he has an occlusion clamp in place over his mucus fistula. this will most likely fall off on its own by the time of discharge and his clinic appointment, and he is instructed to bring this with him to the clinic when he sees dr. . , m.d. dictated by: medquist36 procedure: open and other right hemicolectomy permanent colostomy ileostomy, not otherwise specified diagnoses: coronary atherosclerosis of native coronary artery pure hypercholesterolemia unspecified essential hypertension chronic airway obstruction, not elsewhere classified occlusion and stenosis of carotid artery without mention of cerebral infarction long-term (current) use of anticoagulants acute vascular insufficiency of intestine hepatitis, unspecified unspecified peritonitis 

Answer: The patient is high likely exposed to