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: a 73 year old female with diastolic dysfunction, chronic prednisone for rheumatoid arthritis, who presents with four weeks of loose, watery diarrhea. she was found to be febrile to 100.5 and was also found to be confused and lethargic at home by family members. she was then brought to the ed, where initial evaluation reveals a temperature of 100.1 and hypotension with systolic blood pressure in the 60s. she received 5 liters of iv fluid which improved the blood pressure to the 90s. subsequent to this the patient desaturated to 89 percent on room air and was placed on 100 percent non-rebreather, which improved saturation to 98 percent. initial laboratory results revealed a lactate of 4, white blood cell count of 22. she was, therefore, enrolled in the sepsis protocol. she had a central line placed and aggressive iv hydration was initiated. the patient was then transferred to the medical intensive care unit. past medical history: 1. lupus. 2. a-fib. 3. anemia. 4. osteoporosis. 5. diastolic chf. 6. rheumatoid arthritis. medications on admission: coumadin 5, prednisone 10, fentanyl, lasix 40, toprol-xl 25. allergies: aspirin, valium, demerol, penicillin, codeine, percocet and percodan. family history: noncontributory. social history: she lives with her husband. she had distant tobacco smoking. physical examination: 100.6, 86/53, pulse 76, 99 percent on non-rebreather. general, lying flat. neck, no jvd. no lymphadenopathy. lung exam there are crackles one third of the way up bilaterally. cardiovascular exam irregularly irregular. no murmurs appreciated. abdomen is soft and nontender, nondistended, normoactive bowel sounds. extremities reveal chronic venous stasis changes. pertinent laboratories reveal a white count of 24 with 5 bands. lactate of 4. initial chest x-ray revealed cardiomegaly, but otherwise normal. brief hospital course: 1. sepsis. the patient enrolled in the must protocol. she received empiric antibiotic therapy, as well as stress dose steroids. the eventual source of infection was found out to be c.difficile colitis. she received p.o. flagyl for this with significant improvement in her symptoms. no other positive cultures came back, excluding the possibility of disseminated sepsis. 1. hypoxia. this was believed likely to be due to diastolic chf and hyperdynamic state following her sepsis. she was managed with a non-rebreather in the icu. as her hemodynamics improved with the treatment of the sepsis, so did her shortness of breath. 1. atrial fibrillation. this remained relatively stable during the hospital course. 1. acute renal failure. the patient experienced acute renal failure most likely secondary to pre-renal azotemia. this significantly improved with hydration. 1. rheumatoid arthritis and lupus. she was on stress dose steroids during the acute illness. condition on discharge: the patient was ambulatory and able to return home. discharge diagnoses: 1. c.difficile colitis. 2. sepsis. 3. diastolic congestive heart failure. 4. atrial fibrillation. 5. rheumatoid arthritis. 6. systemic lupus erythematosus. 7. acute renal failure. discharge medications: 1. coumadin 5 mg p.o. daily. 2. prednisone taper. 3. fentanyl 50 mcg tp. 4. vitamin d and calcium. 5. lasix 40 mg p.o. daily. 6. protonix 40 mg p.o. daily. 7. toprol-xl 25 mg p.o. daily. 8. flagyl 500 mg p.o. t.i.d. , dictated by: medquist36 d: 14:07:17 t: 14:37:50 job#: procedure: venous catheterization, not elsewhere classified diagnoses: systemic lupus erythematosus congestive heart failure, unspecified acute kidney failure, unspecified unspecified septicemia atrial fibrillation mononeuritis of lower limb, unspecified osteoporosis, unspecified intestinal infection due to clostridium difficile chronic diastolic heart failure 

Answer: The patient is high likely exposed to