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: the patient is a 47-year-old male who was in his usual state of health working on his computer when everything suddenly went dark, and he felt that the room was spinning. he said just prior to this he had been typing away, then he leaned back in his chair as this episode developed. he was leaning back looking at the computer keyboard but could not see the keys. he stood up and noticed that he had a hard time keeping his balance. after standing up, he walked to the bathroom when he suddenly noticed right face numbness. he began to feel nauseated. he had some vomiting and after having had vomited felt vertigo. shortly thereafter he developed a headache. all of these events occurred within five minutes. at the time that he developed his vertigo, he also noticed that his speech was slurred, and he reports that he decreased swallowing, and this lasted about two hours. he has had a bifrontal headache since that time which has been pounding and continuous. the headache is worse with sitting. the dysarthria and dysphagia resolved totally after two hours. he had no history of any prior trauma, unusual lifting, or unusual movements prior to this. he has never had this happen to him before. he denied neck pain. he initially went to and had a head computed tomography there that was within normal limits. he had a lumbar puncture which showed 400 red blood cells in tubes one and four, but no xanthochromia. a magnetic resonance imaging here showed a right cerebellar stroke. he was initially admitted to the neurosurgery service overnight with neurology consulting, and then he was transferred to the neurology team for further management after leaving the intensive care unit. on arrival at , his blood pressure was 121/69 and heart rate was 99. a magnetic resonance angiography scan showed a right vertebral dissection which was confirmed by angiogram on . the patient was briefly on neo-synephrine after angiogram, and at the time of transfer to the floor was stable. past medical history: (past medical history is significant for) 1. hepatitis b at the age of 16. 2. denies any history of hypertension. medications on admission: none. allergies: he has no known drug allergies. social history: the patient is originally from the republic. he moved here 26 years ago. he speaks english well. he lives with his wife. denies alcohol and tobacco use. family history: family history is positive for diabetes. physical examination on presentation: physical examination at the time of transfer to the neurology service revealed temperature was 100, heart rate was 56 to 77, blood pressure was 117 to 142/65 to 78, respiratory rate was 14 to 18, and his oxygen saturation was 97% to 98% on room air. he was awake and alert. in no acute distress. his lungs were clear to auscultation anteriorly. cardiovascular examination revealed a regular rate and rhythm. the abdomen was soft and nontender. bowel sounds were present. his groin revealed he had no evidence of hematoma or bruit at the site of the angiogram. mental status examination revealed he had normal language and attention. no dysarthria. cranial nerve examination revealed pupils were 4 mm to 2 mm, round and reactive to light. extraocular movements were full. visual fields were full to confrontation. he did have nystagmus on right gaze. the face was equal and symmetric with equal sensation bilaterally. his palate elevated higher on the left than the right. his tongue was midline with normal movement. motor examination revealed full strength with normal tone in all four extremities, and no pronator drift. sensation examination revealed he was intact to light touch, cold, and vibration throughout. gait was deferred. coordination examination revealed finger-nose-finger without dysmetria. rapid alternating movement were normal. heel enation was also without dysmetria. his reflexes were 2+ and equal, and his toes were moot bilaterally. pertinent laboratory values on presentation: laboratories included a white blood cell count of 5.3, hematocrit was 39.4, and platelets were 247. his liver function tests were within normal limits. he had multiple other laboratory tests drawn including erythrocyte sedimentation rate which was 9, antinuclear antibody, c3, c4, anticardiolipin antibody. pertinent radiology/imaging: he had an electrocardiogram which showed a normal sinus rhythm at 90 beats per minute. hospital course: the patient was a 47-year-old male presenting with the sudden onset of headache, vertigo, nausea, and vomiting. the patient was found to have a right cerebellar hemorrhage as well as a right medullar infarction in the setting of a right vertebral dissection. the patient initially had romberg-type syndrome plus right-sided ataxia and vision loss. however, by the time of transfer to the neurology service, these symptoms had resolved. the patient had an angiogram, as noted above, which confirmed the evidence of the right vertebral dissection. his speech and swallow were without difficulties. he was placed on heparin after the angiogram and started on coumadin. he was also continued on antiemetics. of note, the patient has also had a borderline low blood pressure and had worsening of his symptoms of nausea with sitting upright. over the next several days, his nausea continued to improve as did his headaches. he had occupational therapy and physical therapy and began walking more comfortably. the palatal asymmetry was gone by the time of discharge. discharge status: the patient was discharged to home on coumadin in stable condition. discharge diagnoses: right vertebral dissection; complicated by right cerebellar infarction and right medullary infarction. condition at discharge: condition on discharge was stable. medications on discharge: (discharge medications included) 1. coumadin 7.5 mg p.o. q.h.s. 2. zofran as needed. , m.d. dictated by: medquist36 procedure: arteriography of cerebral arteries diagnoses: cerebral embolism with cerebral infarction dissection of vertebral artery 

Answer: The patient is high likely exposed to