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: this is a 62-year-old male status post whipple procedure for duodenal cancer in presenting with a likely case of typhlitis. the patient has had four days of diarrhea and dark stools with nausea, vomiting, and abdominal pain following a recent cycle of chemotherapy that finished two weeks ago. the patient also complains of fevers and chills in addition to nausea and vomiting and right lower quadrant abdominal pain. the patient does not complain of any jaundice. past medical history: the patient's history is remarkable for t4 n1 m0 adenocarcinoma status post whipple procedure with positive pancreatic margins in or . a history of diabetes mellitus, hypertension, peptic ulcer disease, in addition to coronary artery disease. medications on admission: the patient comes in taking , , and a multivitamin daily. physical examination on admission: vital signs revealed a temperature of 98.9 degrees fahrenheit, pulse was 104, blood pressure was 127/87, respiratory rate was 20, and breathing 98 percent on room air. on examination, this was a chronically ill-appearing male in no apparent distress. the extraocular movements were intact. the conjunctivae were without juandice. heart was in a regular rate and rhythm. there were no murmurs, rubs, or gallops. the lungs were clear to auscultation bilaterally. the abdomen revealed a well-healed incision with focal right lower quadrant tenderness with guarding. no rebound, no rigidity, and no diffuse tenderness. rectal examination was heme-negative. the prostate was slightly enlarged on examination. summary of hospital course: thus, the plan at this time was to admit this 62-year-old patient with a likely case of typhlitis, status post whipple procedure, to give the patient pain control, to place the patient nothing by mouth, and to perform serial examinations at this point. the patient was then placed on ampicillin, levaquin, and flagyl. he was placed on intravenous hydration. a foley catheter was placed at this time as well. the plan was to place a nasogastric tube if necessary if the patient vomited or started to have worsening abdominal symptoms. at this point, the patient was formerly admitted to the medicine service. it is important to note that the patient had been given unasyn at an outside facility prior to his arrival at . on hospital day - - the patient was noted to be significantly more tender in the right lower quadrant with increased guarding. the plan at this time was to obtain a computerized axial tomography scan and reevaluate the patient. the patient's lactate at this time was noted to be 1.1. the computerized axial tomography scan ended up showing no perforation, contrast going all the way through the small and large intestines, with no air in the bowel wall, some stranding in the right lower quadrant, and a small amount of fluid. the patient was transferred to the surgical intensive care unit at this time given the changes in his abdominal examination. note: dictation to be continued. , procedure: insertion of other (naso-)gastric tube diagnoses: unspecified essential hypertension diabetes mellitus without mention of complication, type ii or unspecified type, not stated as uncontrolled aortocoronary bypass status long-term (current) use of other medications diarrhea personal history of malignant neoplasm of other gastrointestinal tract secondary malignant neoplasm of other digestive organs and spleen acute appendicitis with generalized peritonitis 

Answer: The patient is high likely exposed to