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 42-year-old female with a known history of right nephrolithiasis, status post right eswl, then ureteroscopy, and laser lithotripsy times 2, two years ago for right kidney stones. the patient stated that she awoke up approximately at 9 a.m. on the day of admission with acute onset of right flank pain. later on the day, she developed nausea, vomiting, and elevated temperature. the patient presented to with these symptoms. previous medical history: gastroesophageal reflux disease. nephrolithiasis as indicated above. previous surgical history: breast reduction. allergies: sulfa. medications on admission: nexium 40 mg p.o. q.d. physical examination: the patient was febrile, temperature 101 degrees, heart rate 108, blood pressure 146/78, breathing 18 times per minute, saturating 96 percent on room air. the patient was alert and oriented times 3. in the emergency department, the patient had a cat scan done, which showed a large number of stones in the right ureteropelvic junction with mild-to-moderate hydronephrosis. a ua was sent, which came back as cloudy, red, ph of 8.0, positive for blood and nitrites. the patient was admitted to the urology service for iv antibiotics and pain control. at this time, the patient refused any intervention done for her kidney stones, including percutaneous nephrostomy tube or indwelling stents despite being informed it was in her best interest to decompress the system in the setting of infection. the patient refused stenting and a nephrostomy tube placement. the patient was placed on intravenous gentamicin and ampicillin. overnight and throughout the following day, the patient appeared to be doing much better clinically. she remained afebrile and her pain was well controlled on a dilaudid pca. friday late nite the patient became febrile and her pain was not well controlled even on the pca. the patient's temperature maxed at 104.6. at this time the patient agreed to undergo placement of a right nephrostomy tube. the patient tolerated this procedure well. there were no complications during this period. following a brief stay in the pacu, the patient was transferred to the icu for observation. clinically, the patient had a marked recovery after drainage of her right kidney. she remained afebrile and all of her vital signs return to a normal range. the patient tolerated food and drink, and was able to be out of bed. the patient was transferred out of the icu on sunday, . she was maintained on iv antibiotics. the patient continued to do well, remained afebrile, and pain was controlled on p.o. medications. on the following day of , the patient and the medical team determine that the patient was well enough to be discharged to home on intravenous antibiotics discharge condition: the patient was discharged in good condition: afebrile, tolerating a regular diet without difficulty, and pain well controlled on oral medications. discharge disposition: the patient will be discharged to home to follow up with dr. in 7 to 10 days for evaluation and treatment of her nephrolithiasis. discharge medications: 1. protonix 40 mg p.o. q.d. 3. dilaudid 2 to 4 mg p.o. q. h. p.r.n. pain. 4. colace 100 mg p.o. b.i.d. p.r.n. constipation. discharge diagnoses: right nephrolithiasis. sepsis. status post right nephrostomy tube. gastroesophageal reflux disease. , dictated by: medquist36 d: 10:06:59 t: 13:37:53 job#: procedure: venous catheterization, not elsewhere classified percutaneous nephrostomy without fragmentation diagnoses: esophageal reflux urinary tract infection, site not specified sepsis septicemia due to escherichia coli [e. coli] hydronephrosis calculus of kidney 

Answer: The patient is high likely exposed to