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: allergies: patient recorded as having no known allergies to drugs attending: addendum: the patient was not discharged on as had been anticipated due to difficulties with the rehabilitation facility placement. . the patient's hct dropped to 26.6 on and he had guaiac positive stool. he anticoagulation was stopped and he was transfused 2u prbcs on . the patient's hct recovered after the transfusion and remained stable for the remainder of his hospitalization. . he was discharged to hospital on discharge disposition: extended care facility: & rehab center - md procedure: diagnostic ultrasound of heart hemodialysis venous catheterization for renal dialysis venous catheterization for renal dialysis venous catheterization for renal dialysis venous catheterization for renal dialysis removal of arteriovenous shunt for renal dialysis diagnoses: hyperpotassemia anemia, unspecified chronic airway obstruction, not elsewhere classified atrial fibrillation coronary atherosclerosis of unspecified type of vessel, native or graft aortocoronary bypass status atrial flutter hypertensive chronic kidney disease, unspecified, with chronic kidney disease stage v or end stage renal disease other specified procedures as the cause of abnormal reaction of patient, or of later complication, without mention of misadventure at time of procedure bacteremia disorders of phosphorus metabolism infection and inflammatory reaction due to other vascular device, implant, and graft staphylococcus infection in conditions classified elsewhere and of unspecified site, other staphylococcus cerebral artery occlusion, unspecified with cerebral infarction viral hepatitis b without mention of hepatic coma, acute or unspecified, without mention of hepatitis delta 

Answer: The patient is high likely exposed to