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 72-year-old nondiabetic white male without any significant medical history, who smokes two packs of cigarettes per day, who developed upper abdominal pain after eating six months prior to admission. this resulted in a 50-pound weight loss. an upper gastrointestinal series was negative. abdominal computed tomography at an outside hospital showed extensive calcification. the patient also complained of bilateral calf claudication for the previous two years. initially, his right calf cramped and then left calf claudication developed as well. the patient was referred to dr. and was seen on in . esophagogastroduodenoscopy by dr. was requested and reportedly showed erosion/ulcerations. a mesenteric arteriogram done as an outpatient at on via the right brachial artery (after unsuccessful left brachial and bilateral femoral punctures) showed left subclavian occlusion, celiac artery occlusion, infrarenal aortic occlusion, superior mesenteric artery with high-grade stenosis which reconstitutes the internal mammary artery, and high-grade right proximal renal artery stenosis, and uptake in the left renal artery. the patient was discharged home post angiogram on . at midnight that same night the patient began to have severe abdominal pain. he was admitted to a local hospital, hospital in , where a noncontrast computed tomography scan showed pneumatosis suggesting acute mesenteric ischemia. the patient was transported by medical flight to for further evaluation. past medical history: none. past surgical history: vasectomy 40 years ago. allergies: no known drug allergies. medications on admission: tylenol as needed. family history: mother died secondary to congestive heart failure. brother had "open heart" surgery. no history of diabetes. social history: the patient lives with his wife. ambulates independently. he smokes two packs of cigarettes per day. he has one or two beers per day. physical examination on presentation: vital signs with a temperature of 97.7, his pulse was 84, his respiratory rate was 18, his blood pressure was 167/64, and oxygen saturation was 100% on 2 liters via nasal cannula. in general, an alert, cooperative, thin, white male in no acute distress. head, eyes, ears, nose, and throat examination revealed the sclerae were anicteric. pupils were equal and round. the neck was supple. no lymphadenopathy or thyromegaly. chest examination revealed heart with a regular rate and rhythm without murmurs. the lungs with wheezes present. the abdomen was mildly tender with guarding and rebound. rectal examination showed no masses. stool was guaiac-positive. extremities revealed feet equally cool. on pulse examination, carotids were palpable bilaterally. radial pulses were 2+ bilaterally. femoral pulses were palpable bilaterally. pedal pulses had monophasic doppler signals. pertinent laboratory values on presentation: white blood cell count was 15.9, his hemoglobin was 11, his hematocrit was 34.2. prothrombin time was 15.6, partial thromboplastin time was 40, and inr was 1.6. sodium was 143, potassium was 4.2, chloride was 114, bicarbonate was 24, blood urea nitrogen was 17, and creatinine was 1. pertinent radiology/imaging: electrocardiogram showed a normal sinus rhythm at a rate of 80. brief summary of hospital course: the patient was admitted to the hospital on . he was taken emergently to the operating room to have an aortobifemoral bypass and a superior mesenteric artery to aorta bypass by dr. followed by an exploratory laparotomy and small-bowel resection by dr. (general surgery). at the time of procedure, because of ongoing ischemia, dr. planned a second look exploration on . during exploration, the patient had washout, ileocecectomy, and ileocolostomy. postoperatively, the patient developed a fever and elevated bilirubin. on , the patient had successful placement of a percutaneous cholecystostomy tube with ultrasound guidance. placement yielded 80 cc of nonpurulent dark green inspissated bile. the patient remained extremely jaundiced. cultures of the bile grew methicillin-resistant staphylococcus aureus. the patient was treated with a course of vancomycin and zosyn. the patient's sputum cultures grew , the patient was treated with a course of fluconazole. the patient was pan-cultured for a fever spike on . once set of blood cultures grew two kinds of klebsiella pneumoniae which were pan-sensitive; including levofloxacin. the klebsiella was resistant to unasyn. the anaerobic bottle grew enterobacter which was resistant to unasyn and zosyn, but otherwise sensitive to other antibiotics including levofloxacin. levofloxacin was started on . length of course will be determined at discharge. the patient failed a bedside swallowing study in early . he continued to remain nothing by mouth. a percutaneous endoscopic gastrostomy tube was placed to start tube feedings. several days later, a double lumen hickman catheter was placed in the left subclavian vein for long-term total parenteral nutrition. tube feeds consisted of half-strength criticare which reached a goal of 20 cc per hour. the total parenteral nutrition goal was 33 kilocalories per kilogram. the patient had a follow-up bedside swallow examination which seemed to indicate the patient was aspirating. however, a video swallow study done on showed that the patient's swallowing had improved significantly and there was no aspiration. recommendations included starting pureed solids and thin liquids on . it was also recommended to stop the tube feeds prior to transfer to the rehabilitation facility. after placement of the percutaneous endoscopic gastrostomy tube in early , the patient was noted to have blood in the tubing, and he also passed liquid guaiac-positive stools. his hematocrit was 26. he was transfused to keep his hematocrit greater than 30 several times. the patient was taken for an esophagogastroduodenoscopy by gastroenterology on . at that time, gastritis versus portal gastropathy was considered. also, two lesions of angiectasis (one in the stomach and one in the proximal duodenum) were cauterized. the patient still continued to have blood draining into his rectal tube. a repeat esophagogastroduodenoscopy was normal, but a possibility of bleeding from the surgical anastomosis was considered. the following day, a colonoscopy was done and an ulcer was seen in the right colon near the anastomosis. there was no active bleeding seen. a computed tomography angiogram of the abdomen done did not show an abscess. no surgical exploration was considered unless the patient developed active bleeding. he was transfused intermittently, and his hematocrit has remained stable. the patient's cholecystotomy tube fell out in the early morning hours of . there was no significant drainage, and the tube was not replaced. physical therapy evaluated the patient for full weightbearing ambulation. the patient was easily fatigued but cooperative. at the time of this dictation, the patient's abdominal and groin incisions were clean, dry, and intact without surgical staples in place. the patient's feet were equally warm with palpable dorsalis pedis pulses and dopplerable posterior tibialis pulses bilaterally. he has a double lumen hickman catheter in his left subclavian vein and a percutaneous endoscopic gastrostomy tube. at the time of this dictation, the patient's nutrition plan will be started per recommendations from the nutrition service. the patient will start a pureed diet and thin liquids with supervision. total parenteral nutrition is at goal, and cycling will start today at 16 hours from 6 p.m. to 10 a.m. stopping the tube feeds has been recommended but has not been decided upon. liver function tests will be ordered as requested. total parenteral nutrition will be dextrose 325 grams, amino acid 100 grams, and lipids 45 grams per 2 liters. medications on discharge: 1. levofloxacin 500 mg intravenously q.24h. (length of treatment to be determined at discharge). 2. lopressor 12.5 mg by mouth/peg twice per day (hold for systolic blood pressure of less than 100, heart rate of less than 55). 3. ursodiol 300 mg by mouth/peg tube three times per day. 4. protonix 40 mg intravenously q.12h. 5. loperamide 2 mg by mouth twice per day. 6. ferrous sulfate 5 ml by mouth twice per day. 7. oral solution of morphine sulfate 10 mg to 15 mg by mouth/ngt q.6h. 8. mucomyst 20% 1 ml to 10 ml via nebulizer q.4-6h. as needed. 9. chlorhexidine gluconate 15 ml by mouth three times per day as needed. 10. dulcolax suppository at hour of sleep as needed. 11. artificial tears 1 to 2 drops both eyes four times per day as needed. 12. tylenol 650 mg to 100 mg by mouth/per rectum q.4-6h. as needed. 13. regular insulin sliding-scale q.6h. discharge disposition: rehabilitation facility. condition at discharge: satisfactory. primary discharge diagnoses: 1. acute mesenteric ischemia. 2. aortobifemoral bypass graft and superior mesenteric artery to the aorta on by dr. . 3. exploratory laparotomy and small-bowel resection on by dr. . 4. second look exploration, washout, ileocecectomy, and ileocolostomy on by dr. . secondary discharge diagnoses: 1. blood loss anemia; status post multiple transfusions. 2. bleeding from ulcer next to right colon anastomosis; resolved. 3. jaundice with placement of percutaneous cholecystostomy tube. 4. malnutrition; placement of percutaneous endoscopic gastrostomy tube, double lumen hickman catheter placed on . 5. klebsiella and enterobacter bacteremia. 6. pneumonia. 7. methicillin-resistant staphylococcus aureus cultured from bile. , m.d. dictated by: medquist36 procedure: continuous invasive mechanical ventilation for 96 consecutive hours or more other partial resection of small intestine insertion of endotracheal tube aorta-iliac-femoral bypass other (peripheral) vascular shunt or bypass percutaneous [endoscopic] gastrostomy [peg] arterial catheterization insertion of other (naso-)gastric tube colonoscopy pulmonary artery wedge monitoring open and other right hemicolectomy transfusion of packed cells endoscopic excision or destruction of lesion or tissue of stomach other suture of abdominal wall diagnoses: acidosis hyposmolality and/or hyponatremia alkalosis bacteremia candidiasis of lung embolism and thrombosis of other specified artery cholangitis chronic vascular insufficiency of intestine 

Answer: The patient is high likely exposed to