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: please see the medical discharge summary of the same admission for hospital course prior to . surgery consultation was obtained on to evaluate the patient for his ileostomy. briefly, the patient was an 84-year-old male with a history of gastrointestinal bleeding in the past and also a total colectomy ileostomy for diverticulosis in . the patient was admitted on in transfer from ............... hospital for evaluation of abdominal plane, melena and clots from his ileostomy. the patient was admitted to the micu and underwent an arteriogram which showed no bleeding in the mesenteric arteries. an esophagogastroduodenoscopy showed two large duodenal ulcers. the patient's hematocrit was stable upon admission (30) and no transfusions were required. the patient developed a gram positive cocci bacteremia initially at presentation and was started on intravenous vancomycin for a moderately elevated white count and temperatures. surgery consultation was obtained at this time to evaluate the bleeding from the ostomy and evidence of patient having small bowel obstruction. it was felt that the patient was a very high surgical risk at this time and therefore no surgical approach was offered. the patient was managed medically with very close observation. the patient was followed peripherally by general surgery over the following two weeks. the patient showed evidence of small bowel obstruction, was made npo and started upon total peripheral nutrition. the patient required nasogastric tube with significant amounts of drainage, as well as decreased stool output through his ostomy bag. over time, the patient's obstruction appeared to open up with decreased nasogastric tube output and increased ostomy output. the patient's examination continued to improve and the patient did well. the patient was followed closely by the general surgery consultation and it was felt reasonable to electively plan for an ileostomy takedown approximately for weeks into the month of given the patient's improving status. procedure: parenteral infusion of concentrated nutritional substances other partial resection of small intestine closure of stoma of small intestine other endoscopy of small intestine diagnoses: acidosis unspecified septicemia iron deficiency anemia secondary to blood loss (chronic) unspecified acquired hypothyroidism personal history of malignant neoplasm of prostate infection and inflammatory reaction due to other vascular device, implant, and graft chronic or unspecified duodenal ulcer with hemorrhage, without mention of obstruction unspecified intestinal obstruction other colostomy and enterostomy complication 

Answer: The patient is high likely exposed to