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: this is a 39 year old right handed man with refractory seizure disorder, status post encephalitis at the age of four, with a reported mental age of a nine year old, who now presents with sudden onset multiple complex partial seizures which consist of his head turning to the left with moments of unresponsiveness lasting between ten seconds to thirty seconds. he at baseline has two to three secondary regeneralized seizures per month and has had multiple complicated changes of medications over the last couple of months to improve seizure control, most recently with weaning of zonegran and replacing it with keppra. topamax was discontinued due to side effects. dilantin was decreased over the summer from 200 mg b.i.d. to 200/100 mg. he was at his baseline until the day prior to arrival on , when he developed a new type of complex partial seizure which as mentioned above consists of left head turn and eye deviation and left arm deviation from time to time approximately ten seconds occurring every five minutes. dr. , his epileptologist, increased the keppra and started ativan 1 mg q6hours and he was transferred to for further management. medications on admission: 1, dilantin 200 mg/100 mg. 2. mysoline mg. 3. keppra 750 mg b.i.d. and on the day of admission was to be at goal at 1000 mg b.i.d. 4. protonix 40 mg q.d. past medical history: as per history of present illness: 1. complex partial seizures with secondary regeneralization since four years of age from presumed encephalitis. 2. learning delay. physical examination: on general physical examination on admission, he was slightly confused but alert and oriented. he had nystagmus from left to right and mild left pronator drift. decreased deep tendon reflexes in the left upper extremity, bilateral dysmetria and clumsiness. he was therefore admitted. hospital course: he was admitted to neurology for optimizing his medications. his initial phenobarbital level was 15.0 and his dilantin level was 3.8. he was given dilantin boluses and his mysoline was eventually increased to 250 mg t.i.d. and then up to mg q.d. his phenobarbital level today continues to be at 15.8 and his dilantin level was therapeutic at 15.6. his course was complicated by continued partial complex seizures as noted above with left side deviation and unresponsiveness and, on , he was transferred to surgical intensive care unit for closer monitoring, as he was having one episode on the average of five minutes even after receiving 5 mg of ativan. he was observed overnight. he was loaded on 750 mg dilantin as his dilantin level at the time was 10.8 and his seizures basically stopped after dilantin loading. he was transferred today from the unit without having had any episodes since :00 p.m. last night. he is going to be monitored closely overnight. if he continues to be seizure free, he is going to be discharged tomorrow with close follow-up with dr. . we will get a dilantin level tomorrow morning as well as trough phenobarbital level. of note, his lumbar puncture that was done in the unit showed two red blood cells, two white blood cells, and protein of 70, glucose of 62, gram stain negative, viral culture and bacterial culture pending at this time. urinalysis was negative. the rest of his laboratory values were within normal limits. medications on discharge: 1. keppra 1000 mg b.i.d. 2. mysoline mg. 3. dilantin 200 mg b.i.d. 4. protonix 40 mg q.d. please note that final adjustment of dilantin and phenobarbital will be made depending on the trough levels of these drugs tomorrow morning. this will be communicated to the family and will be also noted on the discharge sheet. , m.d. dictated by: medquist36 procedure: spinal tap incision of lung diagnoses: other convulsions late effects of intracranial abscess or pyogenic infection 

Answer: The patient is high likely exposed to