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: an 81-year-old male with a history of rectal cancer status post sigmoid colectomy in , presents with melena and left foot cellulitis. the patient states that he has been short of breath x 2 weeks with worsening symptoms in this past week. in his usual state of health, he would walk his dogs 2-3 times a day. in the past week he stopped walking his dogs, found that he cannot walk to his door nor walk up the stairs without feeling tired. he also notes that his stools were darker than usual (2 stools per day, intermittent black) for the past 7-10 days, but did not think much of it. at this time, he also developed redness and tenderness in his left middle toe. he went to hospital for evaluation of his left foot cellulitis, when the doctor noticed that he was short of breath (cbc showed a hematocrit of 22). positive for nausea (dry heaves), lightheadedness with positional change, ethanol, and generalized malaise. negative for fever, chills, vomiting, hematemesis, epistaxis, syncope, brbpr, history of xrt in the esophagus region, history of pud, history of gerd. the patient decided that he wanted to be admitted to the center at this point. emergency department course: temperature 99.5 degrees, pulse 113, blood pressure 143/61, respiratory rate 16, 97 percent on room air, and hematocrit 23. rectal exam: guaiac positive. ng lavage: coffee ground with 500 cc lavage. egd: several nonbleeding erosions in body of stomach but duodenum/esophagus within normal limits. received 4 units of packed red blood cells. started on clindamycin 600 mg x1 for cellulitis. the patient was then transferred to the sicu. sicu course: t-max ?, pulse 80, blood pressure 127/45, respiratory rate of 16, 99 percent on room air, hematocrit of 26.6 to 29.0 to 31.8. was started on augmentin for cellulitis. past medical history: type 2 diabetes. hypertension. gout. rectal carcinoma status post sigmoid colectomy on . chronic renal insufficiency. status post appendectomy. skin cancer. asthma. social history: the patient lives at home alone, drinks glasses of wine per day, stopped smoking 44 years ago. allergies: no known drug allergies. medications: 1. lisinopril. 2. lasix 20 q.d. 3. flovent. 4. wellbutrin. 5. allopurinol. 6. aspirin. 7. glyburide 7.5 units q.a.m./5units q.p.m. 8. metformin 500 mg q.d. 9. singulair q.d. 10. prazosin 1 tablet q.d. physical examination: on initial exam, patient had a t-max of 98.4 degrees, pulse of 64, blood pressure of 122/60, respiratory rate of 22, 97 percent on room air. the patient had diffuse wheezing with resolving left foot erythema. the remainder of the exam was unremarkable. laboratory data: chem-10 was significant for a bun of 32, creatinine of 1.4, which had decreased from 1.8, calcium of 7.5, with an albumin of 3.2. hematocrit was 31.8, initially at 29. pt, ptt and inr all within normal limits. impression: an 81-year-old male with a history of rectal carcinoma status post sigmoid colectomy admitted for upper gastrointestinal bleed and left foot cellulitis. upper gastrointestinal bleed. unclear source. esophagogastroduodenoscopy revealed only erosion. the patient was monitored by serial hematocrits, 4 units of blood was transfused in the ed. the patient was started on clears and iv protonix b.i.d. was given. once hematocrit was stable greater than 30, protonix was switched to p.o. and patient was restarted on his medications withholding aspirin. cellulitis. left toe erythema was improving once the patient was on the floor. the patient was continued on augmentin for a 7-day course. cultures remained negative during this time frame. discharge medications: same as admission with the addition of, 1. augmentin 500/125 mg 1 tab q.d. for the remaining 5 days. 2. protonix 40 mg p.o. q.d. 3. colace. 4. aspirin was withheld. disposition: to home. discharge status: the patient was ambulating, mentating, eating and drinking normally. discharge diagnosis: upper gastrointestinal bleed secondary to erosion within the stomach and duodenum. discharge followup: the patient was asked to follow up with his pcp . within the week. , procedure: other endoscopy of small intestine transfusion of packed cells diagnoses: unspecified essential hypertension diabetes mellitus without mention of complication, type ii or unspecified type, not stated as uncontrolled iron deficiency anemia secondary to blood loss (chronic) chronic airway obstruction, not elsewhere classified gout, unspecified retention of urine, unspecified chronic or unspecified duodenal ulcer with hemorrhage, without mention of obstruction personal history of malignant neoplasm of rectum, rectosigmoid junction, and anus other specified gastritis, with hemorrhage 

Answer: The patient is high likely exposed to