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: history of present illness: a 61-year-old man, with a known murmur x 16 years, followed by dr. with serial echocardiograms. following a recent dental visit, the patient complained of back pain, fever, chills, malaise, and had positive blood cultures. an echo showed mitral regurgitation with leaflet vegetation. cath was done prior to admission that showed 3 plus mr, with an ef of 60 percent, and normal coronaries. an echo done in showed mild lvh, mild left atrial enlargement, an ef of 60 percent, dilated ascending aorta, 1 plus ai, 4 plus mr, 2 plus tr, and mild pulmonary hypertension. cardiac mr mr, an ef of 56 percent, posterior flail leaflet with mild dilatation of the ascending aorta, and bilateral atrial enlargement. past medical history: mitral regurgitation. bph. chronic low back pain. left lung nodule thought to be amyloid skin ca. alcohol use. past surgical history: left upper lobectomy. right inguinal hernia repair. medications at admission: 1. atenolol 25 once daily. 2. enteric-coated aspirin 81 once daily. 3. vitamin e 400 units once daily. 4. flax seed oil. 5. fish oil. 6. live yogurt cultures. 7. penicillin with dental visits. allergies: the patient states no known drug allergies, although percocet gives him stomach cramps. social history: lives with his wife. - quit 30 years ago. alcohol - 3-4 beers per night. denies any other drug use. family history: no known cad. pfts were normal. holter monitor showed sinus rhythm with occasional sharp bursts of atrial tachycardia and svt. ct of the chest showed an ascending aorta of 3.8 cm, tiny left lower lobe nodule. physical exam: heart rate 64 and regular, blood pressure 138/90 on the right, 148/88 on the left, height 6 feet 1 inch, weight 190. general: well-nourished, physically fit man. skin: multiple previously removed skin lesions. heent: pupils equally round and reactive to light. extraocular movements intact, slightly injected, nonicteric. neck with no bruits or jvd. chest is clear to auscultation bilaterally with a well-healed left thoracotomy scar. heart regular rate and rhythm, s1, s2, with a iii/vi systolic ejection murmur heard best at the apex. abdomen is soft, nontender, nondistended with normoactive bowel sounds, and no hepatosplenomegaly. extremities are warm and well-perfused with no clubbing, cyanosis or edema. no varicosities. neuro is grossly intact. cranial nerves ii through xii grossly intact. excellent strength in all four extremities. pulses are 2 plus throughout. lab data: white count 8.6, hematocrit 37.4, platelets 215, sodium 139, potassium 4.9, chloride 106, co2 24, bun 23, creatinine 1.0, glucose 116, alt 21, ast 24, alk phos 47, total bili 0.5, albumin 3.9. ua is negative. blood cultures from are negative. pt is 12.4, ptt is 23.1 with an inr of 1.0. hospital course: on , the patient was admitted directly into the operating room. please see the or report for full details. in summary, the patient had mitral valve replacement with a number 31 mosaic porcine valve. his bypass time was 114 minutes with a crossclamp time of 84 minutes. he tolerated the operation well and was transferred from the operating room to the cardiothoracic intensive care unit. at the time of transfer, the patient was av-paced at 91 beats per minute. he had a mean arterial pressure of 87 with a cvp of 11. he had neo-synephrine at 0.4 mcg/kg/min and propofol at 25 mcg/kg/min. the patient did well in the immediate postoperative period. his anesthesia was reversed. he was weaned from the ventilator and successfully extubated. he remained hemodynamically stable throughout that period. on postoperative day, the patient continued to be hemodynamically stable. however, he did require neo- synephrine infusion to maintain an adequate blood pressure during the early morning hours, and he was then able to be weaned from his neo-synephrine infusion later in the day. at that time, the patient was transferred from the cardiothoracic intensive care unit to far-2 for continuing postoperative care and cardiac rehabilitation. once on the floor, the patient had an uneventful postoperative course. on postoperative day 2, he remained stable. his chest tubes were discontinued, his foley catheter was removed, and he was begun on beta blockers. it should be noted that the patient had a baseline first degree av block when he was started on beta blockade and; therefore, 12-leads were serially checked to make sure there was no prolongation of his pr interval. on postoperative day 3, the patient continued to be hemodynamically stable. his beta blockade was increased, as there was no increase in his pr interval. his temporary pacing wires were removed. his physical activity was increased with the assistance of the nursing staff, as well as physical therapy. over the next 2 days, the patient had an uneventful course, and on postoperative day 5, it was decided that the patient was stable and ready to be discharged to home. vital signs at discharge: vital signs: temperature 99, heart rate 96--sinus rhythm, blood pressure 128/74, respiratory rate 20, o2 sat 94 percent on room air, weight preoperatively 90 kg, at discharge 97 kg. lab data: hematocrit 25.8, sodium 138, potassium 3.9, chloride 101, co2 28, bun 13, creatinine 1.0, glucose 104. physical examination at discharge: neurologically alert and oriented x 3. moves all extremities. follows commands. nonfocal exam. respiratory: clear to auscultation bilaterally. cardiac: regular rate and rhythm, s1, s2, with no murmur. sternum is stable. incision with steri-strips, open to a air, clean and dry. abdomen is soft, nontender, nondistended with normoactive bowel sounds. extremities are warm with 1 plus edema. con at discharge: stable. he is to be discharged to home with visiting nurses. he is to have follow-up with dr. in weeks, follow-up with dr. in weeks, and follow-up with dr. in 4 weeks. discharge medications: 1. potassium chloride 20 meq x 7 days. 2. colace 100 mg . 3. zantac 150 mg . 4. aspirin 325 once daily. 5. dilaudid 2-6 mg q 2-4 h prn. 6. lasix 20 mg x 7 days. 7. lopressor 25 mg . , m.d. procedure: extracorporeal circulation auxiliary to open heart surgery reopening of recent thoracotomy site open and other replacement of mitral valve with tissue graft transfusion of packed cells transfusion of platelets continuous intra-arterial blood gas monitoring diagnoses: mitral valve disorders hypertrophy (benign) of prostate without urinary obstruction and other lower urinary tract symptom (luts) hemorrhage complicating a procedure personal history of other malignant neoplasm of skin 

Answer: The patient is high likely exposed to