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: unresponsive major surgical or invasive procedure: none history of present illness: the patient is a year old woman called in as code stroke. pager activated at 6:40 pm, and i arrived 2 minutes later. stroke attending dr. arrived at 6:47 pm. she is a yr old woman with history as below who was witnessed to have an acute onset of left sided weakness at 4:30pm from husband. immediately called son, and son arrived at 5:30pm to find patient not moving left side with right gaze preference. she was speaking with slurred speech. they then tried to wake the pt up and get her up but she could not sustain her weight. they brought her to ed. she was found to be in a-fib, which she has never been in before. she is on no meds. head ct showed hyperdense mca sign on right with blurring of white border at r parieto-occipital junction with evolving cytotoxic edema pattern. m1 occlusion likely. t-pa started at 7:15. past medical history: 1. choledocholithiasis with an ercp in 2. temporal arteritis on prednisone in past. 3. history of pneumonia social history: lives with husband at home. not currently a smoker. family history: n/a physical exam: t-97.3 bp-165/70 hr-80 rr-17 gen: lying in bed in no apparent distress heent: ncat, oropharynx clear neck: supple, no carotid bruits chest: clear to auscultation b/l cv:irregularly irregular ext: no c/c/e, 2+ dorsalis pedis neurologic exam: ms: eyes open, will grunt and speak short sentences in italian. large left sided neglect to auditory, visual, and tactile stimuli. cn: l pupil surgical, right pupil 3mm->2mm. does not blink to threat from left, + right. there is a clear right gaze preference. there is clear umn facial droop pattern on left. motor/sensory there is hemiparesis on left, with upgoing toe on left. at least 4+/5 on all muscle groups on right. reflexes intact and symmetric. there is extinction to dss. pertinent results: 06:45pm wbc-8.3# rbc-4.23 hgb-13.8 hct-39.5 mcv-93# mch-32.7* mchc-35.0# rdw-14.2 06:45pm neuts-75.4* lymphs-18.6 monos-3.9 eos-1.9 basos-0.3 06:45pm plt count-250 06:45pm pt-14.8* ptt-26.6 inr(pt)-1.5 06:45pm sed rate-36* 06:45pm glucose-165* urea n-10 creat-0.8 sodium-137 potassium-4.6 chloride-99 total co2-27 anion gap-16 07:30pm urine blood-neg nitrite-neg protein-neg glucose-neg ketone-neg bilirubin-neg urobilngn-neg ph-7.0 leuk-neg 07:30pm urine color-straw appear-clear sp -1.008 11:26pm ck-mb-notdone ctropnt-0.13* 11:26pm ck(cpk)-40 head ct 1. hyperdensity within the right middle cerebral artery and loss of -white matter differentiation in the territory of this vessel. no hemorrhage identified. 2. opacification of the left maxillary sinus with mucosal thickening within the right maxillary sinus. 3. evidence old infarctions in the subcortical white matter and within the left occipital lobe. brief hospital course: the patient was admitted for management of a large right mca stroke. her neurologic examination remained poor despite maximal medical management. on hd #2, the patient had a repeat head ct which showed worsening edema and mass effect compressing the lateral ventricles. on hospital day 4 the patient was made comfort measures only in light of her continued poor prognosis. she expired on hd#4. medications on admission: none discharge medications: n/a discharge disposition: expired discharge diagnosis: n/a discharge condition: expired discharge instructions: n/a followup instructions: n/a procedure: injection or infusion of thrombolytic agent diagnoses: atrial fibrillation cerebral embolism with cerebral infarction cerebral thrombosis with cerebral infarction 

Answer: The patient is high likely exposed to