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: angina for one day, in back, and anteriorly as well as abd. pain major surgical or invasive procedure: none. history of present illness: 81 yo male presented to osh with abd. pain radiating to his back. also had a fever with temp of 103. he described pain as intermittent,pulsating, and gripping with associated sob. ct scan at osh suggestive of intramural hematoma of aorta. transferred here for further management. past medical history: abd. aortic aneurysm htn ? bronchitis psh: none social history: widowed, lives with son quit smoking 3 years ago ( unclear as to amount) no etoh physical exam: t 97.2 hr 78 sr with freq. pvcs 106/53 rr 18 3l nc sat 100% awake, uncomfortable, poor historian, but oriented neuro grossly non-focal rrr, no rub or murmur bs clear with scattered wheezes + bs, initially firm to palpation associated with pain. but subsequently soft and nt extrems warm, knees mottled fem 1+ bil., popl. np, 1+ bil/ dp/pt, 2+ bil. radials pertinent results: 11:45pm blood wbc-20.0* rbc-3.13* hgb-10.0* hct-28.8* mcv-92 mch-31.8 mchc-34.7 rdw-14.2 plt ct-118* 04:42am blood wbc-16.4* rbc-2.68* hgb-8.6* hct-24.0* mcv-90 mch-32.2* mchc-35.9* rdw-14.4 plt ct-92* 11:45pm blood neuts-62 bands-25* lymphs-3* monos-10 eos-0 baso-0 atyps-0 metas-0 myelos-0 11:45pm blood hypochr-normal anisocy-normal poiklo-normal macrocy-normal microcy-normal polychr-normal 04:42am blood plt ct-92* 11:45pm blood glucose-138* urean-31* creat-2.6* na-139 k-3.5 cl-103 hco3-22 angap-18 04:42am blood glucose-153* urean-39* creat-2.4* na-136 k-3.4 cl-100 hco3-27 angap-12 08:04am blood alt-11 ast-24 ld(ldh)-238 alkphos-44 amylase-23 totbili-0.7 08:04am blood lipase-8 11:45pm blood ck-mb-5 ctropnt-0.02* 08:04am blood calcium-7.6* phos-2.4* mg-1.6 05:25am blood vanco-12.7 11:51pm blood lactate-2.8* radiology final report esophagus 9:27 am esophagus reason: r/o esophageal perforation, use thin barium contrast: optiray medical condition: 81 year old man with reason for this examination: r/o esophageal perforation, use thin barium history: 81-year-old male with probable infected aortic hematoma. evaluate for esophageal perforation. comparison is made to prior ct examination dated earlier on same day. esophagram. multiple thin sips of optiray contrast was administered followed by thin barium. no abnormal extravasation of contrast is noted outside of the esophageal lumen, which displayed normal primary peristaltic contractions and diffuse tertiary contractions. no evidence of hiatal hernia or reflux is noted on this limited exam. contrast and thin barium was noted to pass freely through the esophagus into the stomach. impression: no evidence of esophageal perforation. the study and the report were reviewed by the staff radiologist. dr. dr. approved: fri 2:14 pm radiology final report cta chest w&w/o c&recons, non-coronary 12:49 am cta chest w&w/o c&recons, non-; cta abd w&w/o c & recons reason: please characterize aorta field of view: 36 contrast: visapaque medical condition: 81 year old man with known aaa and ? thoracic hematoma reason for this examination: please characterize aorta contraindications for iv contrast: none. indication: 81-year-old with known aaa and chest pain radiating to the back, evaluate for dissection. comparisons: none. technique: axial mdct images of the chest, abdomen, and pelvis with and without 90 cc of nonionic visipaque contrast. please note that despite the patient's elevated creatinine of 2.6, the ed and the covering vascular surgery team thought that the study with emergent enough to rule out a type a dissection for which contrast was warranted. the risks and benefits were discussed with the patient prior to the study. ct vascular: on the non-contrast images, there is an extensive type b aortic intramural hematoma, extending from the takeoff of the left subclavian artery, to just proximal to the celiac axis. there is a tiny linear area of non- enhancement involving the arch distal to the takeoff of the left subclavian, which could represent a very early dissection flap. there is a large penetrating ulcer involving the proxiaml descending thoracic aorta. additionally, there is a large amount of air within the aortic wall at this level and also at several other locations in the abdominal aorta. specifically, there is prominent air involving the posterior aortic wall just inferior to the renal artery takeoff. another focus involving the anterior aortic wall just inferior to this. finally, there is air seen within the proximal right common iliac artery. note is made of stenosis at the celiac artery origin. the sma and are widely patent. cta chest with iv contrast: there are small bilateral pleural effusions and atelectasis. the heart, pericardium, and great vessels are unremarkable. there is no evidence of hematoma within the mediastinum nor pericardium. there is trace coronary artery calcification. this nongated study does not provide optimal evaluation of the coronary arteries. the pulmonary arteries enhance normally. ct abdomen with iv contrast: hypodense lesion in segment iii of the liver anteriorly, likely a cyst or hemangioma but not fully characterized. small hyperenhancing lesion in segment vii. there is left-sided intrahepatic biliary ductal dilatation and mild prominence of the extrahepatic common duct. the native kidneys are minimally atrophic. the spleen, pancreas, adrenal glands, stomach, and proximal bowel are unremarkable. ct pelvis with iv contrast: no acute abnormalities are seen in the pelvis. there are bilateral fat-containing inguinal hernias. evaluation of the osseous structures demonstrates only diffuse degenerative changes. multiplanar reformats: coronal and sagittal reformatted images confirm the above findings. there is diffuse atherosclerotic disease throughout the abdominal aorta. there is a large infrarenal aortic aneurysm, measuring up to 5 cm in sagittal ap dimension. impression: 1) extensive type b aortic intramural hematoma, extending from the origin of the left subclavian artery to the upper abdominal aorta. no definite aortic dissection, however, there is a tiny linear hypodensity involving the mid aortic arch medially, which may be the very beginning of an aortic dissection flap. 2) multiple foci of air within the aortic wall, highly suspicious for multifocal mycotic aneurysms, the most prominent in the proximal descending aorta adjacent to the large pseudoaneurysm/penetrating ulcer, likely the origin of the patient's intramural hematoma. 3) no colonic lesion or evidence of diverticulitis to account for the aortic wall air, though colonoscopy may be considered after the patient is stabilized. 4) 5-cm infrarenal aortic abdominal aneurysm. 5) moderate left-sided intrahepatic biliary ductal dilatation. 6) hyperenhancing segment vii and hypodense segment iii hepatic lesions, not fully characterized on this study, the former could be further assessed by mri. findings were discussed immediately after the study with the covering cardiothoracic surgery fellow, dr. . the study and the report were reviewed by the staff radiologist. dr. dr. approved: fri 3:57 pm brief hospital course: admitted to csru from er on early am and re-scanned urgently. results showed the infrerenal aaa as well as a type b intramural hematoma. also noted were multiple foci of intramural air consistent with a possible mycotic process, and a penetrating ulcer of the thoracic aorta ( please see above results of study). id consult requested and pt. started on triple antibiotic therapy with blood cultures and rpr sent. thoracic and vascular surgery also consulted as well as dr. from ct surgery. not a candidate for open repair of taa per vascular, but endo stent-grafting would be considered if aorta further dilates of symptoms worsened. general surgery also evaluated patient, with no change in plan for abx therapy and bp control. gram positive rods grew from blood cultures with diagnosis of clostridium aortitis. barium swallow did not reveal any fistula. high-risk surgery was discussed with the pt. and his family. they refused surgery and opted for medical therapy. the pt. also declined possible intubation and requested he not be resuscitated. pt. requested comfort measures only. picc line placed for continued abx therapy. transferred to the floor on . fentanyl patch and morphine continued for pain/palliative care. bs coarse throughout on with increasing somnolence. throughout the night, he became more hypotensive and unresponsive to fluid therapy. he did not appear to be in distress. at 5am, he had cessation of pulse, heart sounds and respirations. he was pronounced expired by dr. . medications on admission: hctz lisinopril (doses unknown) discharge disposition: extended care discharge diagnosis: mycotic thoracoabdominal aneurysm htn discharge condition: expired procedure: venous catheterization, not elsewhere classified diagnoses: atherosclerosis of aorta hypertensive chronic kidney disease, unspecified, with chronic kidney disease stage i through stage iv, or unspecified chronic kidney disease, unspecified hypotension, unspecified dissection of aorta, abdominal other specified disorders of liver other specified bacterial infections in conditions classified elsewhere and of unspecified site, clostridium perfringens 

Answer: The patient is high likely exposed to