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: abdominal free air major surgical or invasive procedure: exploratory laparotomy with pyloric exclusion and wide drainage of the duodenum and pancreatic bed. re-opening of laparotomy with placement of bag. history of present illness: pt is a 53m who was transferred to the ed this morning from hospital. the history obtained from bornewood and the patient's father is as follows: patient presented to hospital yesterday requesting detox from heroin. had last used on tues and was exhibiting symptoms of withdrawal. reportedly vital signs at were "high". he was then transferred to yesterday for detox. last night he started a methadone taper. his bp was 86/65 or similar throughout the night. this morning ~7am he was talking with the staff when he collapsed and fell onto his left side. he then had 10min of rhythmic muscle movement of the upper extremities with loc. he woke up, started clearing, and was brought via ambulance to the ed where he was /ashen, minimally responsive and hypotensive. he was intubated, a femoral cvl was placed and aggressive fluid resuscitation was started. he was noted to have a firm, distended abdomen, coffee ground ogt output, and free fluid on fast exam. a ct scan was obtained which demonstrated pneumoperitoneum and this surgery consult was obtained. past medical history: 1. asthma 2. peptic ulcer disease 3. herniated disk and low back pain 4. narcotic abuse - father reports pt was started on oxycodone (8 pills/day) ~10 yrs ago for back pain secondary to herniated disc. he abused them for 7 years and ~2-3 years ago first detoxed at hospital. he was also diagnosed with an ulcer at that time. father is unsure how long he has been using at this time. social history: sochx: lives with parents. father is . unemployed. no children. reportedly only drugs of abuse are oxycodone/heroin. family history: non-contributory physical exam: pe: hr 124 129/59 18 99% cmv 100% 550x20 +5 intubated, lightly sedated. moving all extremities. ogt with coffee ground output, hemoccult+ cta b/l rrr abd distended, firm, ?tender no le edema ext cool, clammy pertinent results: na 137 cl 98 bun 29 gluc 135 agap=25 k 3.8 hco2 18 cr 2.4 estgfr: 28/34 (click for details) ck: 739 mb: 6 ca: 8.9 mg: 3.8 p: 9.2 alt: 17 ap: 88 tbili: 0.8 alb: 3.2 ast: 25 : lip: 423 serum asa, etoh, acetmnphn, benzo, barb, tricyc negative trop-t: 0.01 wbc-16.0 hgb-17.0 plt-342 n:73 band:6 l:10 m:7 e:1 bas:0 atyps: 1 metas: 2 pt: 17.5 ptt: 47.5 inr: 1.6 ph 6.94 pco2 76 po2 77 hco3 18 basexs -18 abdominal ct large pneumoperitoneum, free intraperitoneal fluid, and biliary gas. the constellation of findings raises concern for duodenal ulcer perforation. dilated loops of small bowel indicate presence of an ileus in the setting of acute abdominal process. brief hospital course: the patient was admitted and taken urgently to the or for an exploratory laparotomy. he was found to have a perforated duodenum and underwent a pyloric exclusion. he remained on a ventilator and was transferred post-operatively to the sicu on pressors for hemodynamic support. later on pod0, a bladder pressure could not be obtained due to inability to irrigate the bladder and was increasingly difficult to ventilate, so the decision was made to open the abdomen in order to prevent abdominal compartment syndrome. he continued to require increasing pressor support. his blood cultures were positive for gram negative rods and was coverage with broad spectrum antibiotics. on pod1, he succumbed to overwhelming septic shock after maximal pressor (including epinephrine) and ventilatory support. his family was informed of the prognosis and made the decision to change his status to comfort measures only. he expired quickly after pressors were withdrawn. medications on admission: unknown discharge medications: none - patient expired discharge disposition: expired discharge diagnosis: death due to sepsis shock in the setting of perforated duodenal ulcer discharge condition: expired discharge instructions: pt expired followup instructions: none - patient expired procedure: continuous invasive mechanical ventilation for less than 96 consecutive hours venous catheterization, not elsewhere classified insertion of endotracheal tube exploratory laparotomy arterial catheterization other gastroenterostomy without gastrectomy reopening of recent laparotomy site insertion of choledochohepatic tube for decompression diagnoses: severe sepsis asthma, unspecified type, unspecified opioid type dependence, unspecified acute respiratory failure septic shock other septicemia due to gram-negative organisms other suppurative peritonitis acute duodenal ulcer with hemorrhage and perforation, without mention of obstruction displacement of intervertebral disc, site unspecified, without myelopathy 

Answer: The patient is high likely exposed to