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:nkda. social:married. social drinker. non-smoker. o:neuro=a/a/o. very tired, but easily arousable & appropriate. pulm=beath sounds=clear & decreased lll. o2 via nc @ 2l w sats low 90's-desats to 80's wo o2. wo co sob/dyspnea. tolerates lying flat. cxr-lll infiltrate-abx started levofloxacin. cv=hemody stable. access-lsc mlc. gi=npo. admit to hct-28.8. sm amt guiac pos stool-black. gu=voiding. id=afebrile. labs=sent upon admission. k & kphos replaced. socail=family to be in tomarrow-. a:noted varices & gastritis-required total 4 urbc's. contin black tarry stools. procedure: endoscopic excision or destruction of lesion or tissue of esophagus diagnoses: pneumonia, organism unspecified diabetes mellitus without mention of complication, type ii or unspecified type, not stated as uncontrolled macular degeneration (senile), unspecified esophageal varices in diseases classified elsewhere, with bleeding varices of other sites other specified disorders of stomach and duodenum unspecified gastritis and gastroduodenitis, without mention of hemorrhage other chronic nonalcoholic liver disease 

Answer: The patient is high likely exposed to