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: discharge medications: vancomycin 1 g iv q.12 for 2 weeks following discharge (trough to be drawn on the afternoon of ), captopril 50 mg p.o. t.i.d., nystatin oral suspension 10 ml p.o. q.i.d., milk of magnesia p.r.n., dulcolax suppository p.r.n., lasix 20 mg p.o. b.i.d., diltiazem 120 mg p.o. q.i.d., metoprolol 150 mg p.o. t.i.d., lansoprazole oral suspension 30 mg per ng tube q.d., albuterol/ipratropium inhaler 2 puffs q.4 hours, colace 100 mg per ng tube b.i.d., aspirin 325 mg per ng tube q.d. follow-up: the patient is to follow-up with dr. when appropriate following discharge. the patient should also follow-up with dr. upon discharge from rehabilitation. discharge diagnosis: 1. type a acute aortic dissection. 2. hypertension. 3. atrial fibrillation. 4. cerebrovascular accident. 5. methicillin resistant staphylococcus aureus pneumonia. , m.d. dictated by: medquist36 procedure: venous catheterization, not elsewhere classified continuous invasive mechanical ventilation for 96 consecutive hours or more extracorporeal circulation auxiliary to open heart surgery diagnostic ultrasound of heart diagnostic ultrasound of heart insertion of endotracheal tube other bronchoscopy temporary tracheostomy resection of vessel with replacement, thoracic vessels open heart valvuloplasty of aortic valve without replacement diagnoses: congestive heart failure, unspecified unspecified essential hypertension atrial fibrillation infection with microorganisms resistant to penicillins acute, but ill-defined, cerebrovascular disease aortic valve disorders methicillin susceptible pneumonia due to staphylococcus aureus dissection of aorta, thoracoabdominal pneumonia due to hemophilus influenzae [h. influenzae] 

Answer: The patient is high likely exposed to