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: chief complaint: gi bleed major surgical or invasive procedure: egd showing nl esophagus/stomach, single large non-bleeding ulcer in duodenal bulb, signs of acute duodenitis history of present illness: 18 yo male with hx of pud dx on previous egd on prevacid (but only takes intermittently) who p/w hemetemesis. he reports a 2 month history of "ulcer pain" described as sharp, burning internal pain, mid epigastric. pain is intermittent throughout the day, not relieved/made worse by anything, no relationship to food, not better with position. over the past 2 weeks, the pain has gotten worse (he stopped taking his prevacid over the past week). he started noticing dark/melanotic bowel movements, and over the past 1-2 days, there was also bright red blood. on the day of admission, he vomited a large amount of emesis with bright red blood and some clots. he reports passing out (no trauma to head) for a few seconds and then recovered and called 911. he also reports generalized weakness over the past few weeks and a 15 lb weight loss since . he reports abdominal pain since 4th grade, but was only diagnosed with du 2-3 years ago (via egd). he has had a few admissions for abdominal pain for the ulcers, has been treated with prevacid (avoids caffeine), but has never had bleeding from the ulcers in the past. on admission, his hct was 28.2 (dropped to 22.6 after 3l ivf). he went for egd that revealed normal esophagus and stomach and a large non-bleeding ulcer in the duodenal bulb with surrounding edema and erythema and erythema and friability in duodenal bulb compatible with acute duodenitis. as per gi, serial hcts, ivf, prbc, and protonix were started. pt now stable s/p 2 u transferred from micu to floor at this time past medical history: 1. pud, diagnosed by egd 3 years, with admissions for abdominal pain in the past meds: prevacid daily (not for 1-2 weeks) all: nkda social history: freshman at , studying to be a stockbroker social etoh no tobacco/drug use family history: aunt with gastric ulcers aunts with ovarian ca grandfather with cad physical exam: pe: vs: 98.4 105/53 94 20 100% ra genl: pale, nad, comfortable heent: pale conjunctiva, perrla, eomi cv: rrr, no m/r/g lungs: ctab, no w/r/r abd: soft, nt, nd, +bs, no hsm ext: no c/c/e, pt 2+ bilaterally neuro: grossly intact pertinent results: 138 105 37 123 4.9 23 0.9 comments: hemolysis falsely elevates k hemolyzed, moderately wbc= 11.2 hgb= 9.8 plt=314 hct= 28.2 (28.2--->22.6--->31---->26---->28.2) n:66.8 l:24.2 m:3.9 e:4.8 bas:0.3 pt: 13.3 ptt: 18.9 inr: 1.1 brief hospital course: a/p: 18 yo male with recurrent pud, p/w abdominal pain, melena, and hematochezia, found to have a hct of 28 on admission and large non-bleeding du on egd, s/p micu stay, with stable hct at this time upon transfer to the floor. 1. pud: duodenal ulcer at such young age, need to consider unusual etiologies such as h pylori, so will check antibody. also need to consider zollinger- so will check gastrin level. as per pt, he has been checked for these things in the past and was negative. hsv i is also reported to cause pud. no clinical evidence of obstruction. pt denies cocaine or amphetamine use which can cuase mucosal vascular insults. his hct is stable at this time, and records of prior workup are being obtained from pcp. received a total of 3 prbc and had no more gi bleeding. his hct remained stable throughout hospitalization and upon discharge. he was given iv ferric gluconate prior to discharge. he was discharged on protonix 40 mg ibd, sucralfate, fe 325 tid, folate, and he will follow up in our clinic in 2 weeks (appointment scheduled). gastrin level was pending at time of discharge. records were obtained from pcp with respect to prior workup for ulcers, and in the past, pt was h.pylori negative with normal gastrin level. pt was stable, tolerating full diet at time of discharge. 2. anemia: likely acute blood loss, pt with low ferritin. he was given iv iron prior to discharge and was discharged on fe 325 tid. he will follow up in clinic in 2 weeks and have his hct checked at that time. 3. ppx: pneumoboots while in bed/in-house, ppi, taking po's 4. dispo: hct had been stable for over 24 hours on discharge. a follow up appointment was scheduled in our clinic for 2 weeks, and he was given prescriptions for sucralfate, iron sulfate, protonix, and folate upon discharge. medications on admission: prevacid (not for last week) tylenol prn discharge medications: 1. ferrous sulfate 325 (65) mg tablet sig: one (1) tablet po tid (3 times a day). disp:*90 tablet(s)* refills:*2* 2. pantoprazole sodium 40 mg tablet, delayed release (e.c.) sig: one (1) tablet, delayed release (e.c.) po q12h (every 12 hours). disp:*60 tablet, delayed release (e.c.)(s)* refills:*2* 3. sucralfate 1 g tablet sig: one (1) tablet po four times a day. disp:*120 tablet(s)* refills:*2* 4. folic acid 1 mg tablet sig: one (1) tablet po once a day. disp:*30 tablet(s)* refills:*2* discharge disposition: home discharge diagnosis: bleeding duodenal ulcer discharge condition: good discharge instructions: 1. please take all your medication as prescribed. we added protonix 40 mg twice daily and iron 325 mg three times a day. we also added sucralfate and folate to your medication regimen. 2. please avoid ibuprofen, other nsaids, caffeine, alcohol, tobacco, or other spicy foods that upset your stomach. 3. please call your pcp if you are having bloody or very dark stools, vomiting up blood, chest pain, shortness of breath, or with any other concerns. 4. follow up with dr. in the clinic () on , 1:20 pm, in 7. please bring your discharge instructions with you to this appointment. 5. you should take it easy for 1-2 weeks, get a lot of rest, minimal physical exertion. followup instructions: provider: where: medical specialties phone: date/time: 1:20 procedure: other endoscopy of small intestine transfusion of packed cells diagnoses: acute posthemorrhagic anemia acute duodenal ulcer with hemorrhage, without mention of obstruction 

Answer: The patient is high likely exposed to