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: vertigo, decreased responsiveness major surgical or invasive procedure: intubated extubated - history of present illness: the pt is a 60 year-old man with a history of afib and periodic episodes of vertigo who presents with acute onset dizziness with severe nausea and vomiting, followed by increased lethargy and periods of apnea. according to mr. wife, he was last seen normal around 1pm this afternoon, right before she went to work. shortly thereafter, however, she reports getting a call that he had gone to the ed because of sudden onset of severe dizziness with nausea and vomiting. reportedly on arrival to the ed he was complaining of severe vertigo, with frequent vomiting. he was also noted to be lethargic, not following commands appropriately, and refusing to open his eyes. the vomiting continued, and he was not appropriately protecting his airway. in addition he had several episodes of observed apnea. at this point the decision was made to intubate him, and get a ct/cta, afterwhich neurology was consulted. according to his wife and prior notes, mr. has been having episodes of vertigo for many years, dating back to an episode of meningitis 20-30 years ago. he will usually have a mild degree of nausea and vomiting, and will often require iv fluids. he will occasionally take meclizine for symptomatic relief, however generally avoids it because it makes him quite somnolant. according to his wife, the degree of vomiting, as well as the accompanying lethargy were atypical for his usual episodes. he last had one of his episodes of vertigo ~3 days ago, and usually has these occur several times/year. no recent fever or illness. past medical history: - afib, on coumadin - periodic episodes of vertigo - s/p tympanoplasty for chronic otitis media social history: lives in with his wife. etoh, no smoking, no illicits. family history: mother died at age 75 of cad. father died at age of old age physical exam: physical exam: vitals: t: 96.7 p: 97 r: 16 bp: 94/73 sao2: 100% on vent general: awake, cooperative, nad. heent: nc/at, no scleral icterus noted, mmm, no lesions noted in oropharynx neck: supple, no carotid bruits appreciated. no nuchal rigidity pulmonary: lungs cta bilaterally without r/r/w cardiac: irregular abdomen: soft, nt/nd, normoactive bowel sounds, no masses or organomegaly noted. extremities: no c/c/e bilaterally, 2+ radial, dp pulses bilaterally. skin: no rashes or lesions noted. neurologic: -mental status: intubated, not following commands off propofol, but can only briefly turn it off as he has significant cough and discomfort. -cranial nerves: pupils 2->1.5mm bilaterally. slight disconjugate gaze with medial deviation of r eye. negative corneals, negative oculocephalics, intact gag. -motor/sensory: briskly localizes with right arm to painful stimuli. extensor posturing of left arm to pinch, but occasionally has small spontaneous movements on the left. extensor posturing bilaterally of lower extremities to pinch. -dtrs: tri pat ach l 2 3 2 2 1 r 2 3 2 2 1 plantar response was flexor bilaterally. post extubation: ms:intact cn: no deficits motor: full strength at upper and lower ext sensory: no deficits in any modality pertinent results: 01:56am blood wbc-6.1 rbc-3.57* hgb-10.8* hct-32.0* mcv-90 mch-30.3 mchc-33.7 rdw-15.0 plt ct-156 03:10pm blood neuts-59.8 lymphs-34.4 monos-3.2 eos-2.2 baso-0.5 09:50am blood pt-20.0* ptt-94.3* inr(pt)-1.8* 07:50am blood pt-21.2* ptt-150* inr(pt)-2.0* 01:56am blood glucose-124* urean-15 creat-0.8 na-143 k-3.3 cl-113* hco3-24 angap-9 01:56am blood ck(cpk)-264* 01:56am blood ck-mb-7 ctropnt-<0.01 03:10pm blood ctropnt-<0.01 03:10pm blood asa-neg ethanol-neg acetmnp-neg bnzodzp-neg barbitr-neg tricycl-neg imaging: mri: there are no parenchymal signal or structural abnormalities. there is no acute infarct. there is right mastoid air cell effusion. there is mild mucosal thickening within the ethmoid sinuses. fluid opacifies the nasopharynx, likely related to intubation. impression: right mastoid air cell effusion with an otherwise normal brain mri. cta: 1. no acute intracranial findings, vascular malformation, or high-grade stenoses. 2. prominent right hilar nodes as well as several prominent level 1 and 2 nodes of unclear etiology. cxr: comparison is made with prior study . mild cardiomegaly is stable. et tube is in the standard position. ng tube tip is in the stomach. bibasilar opacities consistent with atelectasis are stable. there are no new lung abnormalities to suggest acute respiratory event. there is no pleural effusion or pneumothorax. brief hospital course: patient is a 60 yo man with a history of afib, sub therapeutic on coumadin (inr 1.8), and episodic vertigo, presenting with acute onset dizziness, accompanied by severe nausea and vomiting, followed by increased lethargy and periods of apnea. exam is notable for small but reactive pupils, slightly disconjugate gaze with negative oculocephalic, intact gag, brisk localization to stimuli on the r, but extensor posturing in l arm and bilateral lower extremities. ct and cta were negative in the ed, but the overall picture of sudden onset dizziness, and progressively worsening exam, in the context of having afib with a sub therapeutic inr are concerning for possible posterior circulation infarct. he was intubated in the ed for the concern of multiple emesis and increased responsiveness, that he was not protecting his airway. the patient was admitted to the icu, and an mri was obtained. the mri did not show any evidence of acute stroke. overnight the patient's exam significantly improved where he was following all commands. he was extubated on . after extubated the patient had a normal exam and was able to tolerate food without nausea or vomiting. on further history the patient has been complaining of some hearing loss associated with these episodes of severe vertigo. his symptoms were attributed to inner ear pathology. he was discharged after been evaluated by physical therapy. he underwent mri of his brain which did not show evidence of stroke. he had some episodes of intermittent tachycardia which were sinus and thought to be related to dehydration/anxiety. his inr at the time of discharge was 1.8, hence he was bridged on lovenox while discharge and was asked to follow up with pcp for further care. this was communicated to his pcp at the time of discharge. medications on admission: - coumadin 7.5 m,w,f 5.0 s,t,t,s - meclizine prn discharge medications: 1. warfarin 2.5 mg tablet sig: three (3) tablet po 3x/week (mo,we,fr). 2. warfarin 5 mg tablet sig: one (1) tablet po 4x/week (,tu,th,sa). 3. simvastatin 20 mg tablet sig: one (1) tablet po once a day. disp:*30 tablet(s)* refills:*2* 4. lovenox 80 mg/0.8 ml syringe sig: eighty (80) mg subcutaneous twice a day for 4 days: he needs to have inr checked on sunday and if his inr is therapeutic,( 2- 3) lovenox should be stopped from sunday. if inr is less than 2 he should be continued and get his inr checked again on monday with same protocol to follow. disp:*8 * refills:*0* 5. outpatient lab work blood work - pt/inr on , on , please fax results name: , location: healthcare - medical group address: ,8th fl, , phone: fax: email: discharge disposition: home with service facility: vna discharge diagnosis: acute onset vertigo- resolved, mostly vestibular in origin discharge condition: mental status:clear and coherent level of consciousness:alert and interactive activity status:ambulatory - independent discharge instructions: you were admitted with an episode of acute vertigo and severe nausea and vomiting. it was very severe and there was worry that you were going to aspirate and would not be able to protect your breathing. you had to be intubated (a breathing tube was placed in your lungs) and you were sedated for imaging. you had ct scan of your head and mri which did not show any evidence of stroke. please take your medicines as prescribed. please call 911 or your doctor if you develop concerning symptoms. followup instructions: please follow up with neurology clinic with scheduled appointments : provider , m.d. phone: date/time: 4:00 provider , m.d. phone: date/time: 3:40 procedure: continuous invasive mechanical ventilation for less than 96 consecutive hours insertion of endotracheal tube arterial catheterization diagnoses: atrial fibrillation long-term (current) use of anticoagulants dizziness and giddiness 

Answer: The patient is high likely exposed to