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: dr. is a 63 year-old right handed internist who was previously healthy and returned from a trip to europe when he developed symtpoms of slurred speech and unsteady gait. these symtpoms occurred while he was in the airport and he had previously noted while in flight the development of a right sided headache. his symptoms improved, but as he was removing luggage from a cab at approximately 3:00 p.m. he fell to the ground and was found to be hemiplegic along his left side. the patient was taken to where he was intubated for airway protection and transferred to for further management. an mri was obtained, which demonstrated large diffusion abnormality in the right mca lesion. susceptibility scan was negative and his mra demonstrated right ica and right mca occlusion. the patient underwent tissue plasminogen activator administration just under six hours after the onset of symptoms with transient improvement in his left sided paresis. the patient was noted to be unable to follow commands, he could localize pain with his right arm and withdraw his left arm from painful stimulus in a nonspecific manner and he could also move his right leg more then left. tone was decreased in his left lower face. there were no examination findings suggestive of deep venous thrombosis on initial presentation. the patient was admitted to the neurological intensive care unit for further management. hospital course: the patient remained intubated and during his initial days in the hospital began having episodes of bradycardia and asystole. this was thought to be possibly be related to infarction or edema involving the insular region. the patient had a lower extremity duplex scan that was normal. follow up head ct had demonstrated a hemorrhagic conversion of approximately 3 cm of his right mca infarction. a transthoracic echocardiogram with bubble study demonstrated no pfo and a normal ef, however, the patient was unable to perform specific maneuvers to aid in the recognition of a pfo and the study was felt to be limited. the patient underwent extubation on , but was reintubated on the 25th after the decision was made to perform a right hemicraniotomy for decompression of his large mca infarction. he was subsequently extubated on and transferred to the floor on . during his intensive care unit stay he was noted to have intermittent fevers and had one blood culture that was positive for staph non-aureus for which he was started on vancomycin. subsequent blood cultures showed no growth and it is likely that the initial blood culture was contaminated. on transfer to the general neurologic service the patient's examination demonstrated that he was awake, alert and had mild difficulty providing details of recent events. he was aware that he had suffered a stroke and could recite the days events and could also recall remote events without difficulty. his speech was slow and slurred and consisted of short sentence structure. he had decrease in flexion. he was noted to have a right gaze preference and left lower facial droop. he was flaccid and hemiplegic on his left side. there was a homonymous hemianopsia in his left visual field. he had no sensory modalities intact on the left side and a dense hemi-neglect was present for his left. the patient was restarted on aspirin and continued to do well during the remainder of his hospital stay. he had evidence of a mild pneumonia along the left lingular area and his vancomycin was discontinued with the addition of levofloxacin. a repeat transthoracic echocardiogram has been ordered and is to be performed on the day prior to discharge. the patient also had a hypercoagulability workup performed and the results of these studies are pending at the time of this dictation. discharge diagnoses: 1. right internal carotid artery occlusion with right middle cerebral artery ischemic infarction and subsequent left hemiplegia with left sided neglect. 2. pneumonia. discharge medications: 1. aspirin 325 q.d. 2. tylenol #3 one to two tabs q 4 to 6 hours as needed for neck pain. 4. skelaxin 800 mg po t.i.d. 5. flexeril 10 mg po q day. 6. lipitor 10 mg po q.d. discharge diet: low cholesterol diet. the patient's diet should include aspiration precautions. discharge activities: as defined by physical therapy. discharge condition: good. special considerations: the patient has undergone a right hemicraniotomy and the right cranial region is vulnerable to compressive injury. the patient should not sleep or have pressure applied to the right side of his head. the patient should also continue to have deep venous thrombosis prophylaxis with heparin 5000 units subq b.i.d. and venodyne boots while in bed. the patient will also likely require a bowel regimen with colace 100 mg po b.i.d. and dulcolax suppositories as needed. disposition: the patient is to be discharged to a rehab facility. , m.d. dictated by: medquist36 procedure: continuous invasive mechanical ventilation for less than 96 consecutive hours enteral infusion of concentrated nutritional substances injection or infusion of thrombolytic agent other craniectomy diagnoses: pneumonia, organism unspecified occlusion and stenosis of carotid artery without mention of cerebral infarction cerebral artery occlusion, unspecified with cerebral infarction 

Answer: The patient is high likely exposed to