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: , twin number two, was born at 25 and 1/7 weeks gestation. he is being transferred to for ligation of a patent ductus arteriosus. was born to a 29 year old, gravida i, para 0 now 2 woman. this pregnancy was conceived with invitro fertilization and resulted in a twin, diamniotic, dichorionic pregnancy. the mother's prenatal screens are blood type ab negative, antibody negative, rubella immune, rpr nonreactive, hepatitis surface antigen negative and group b strep unknown. this pregnancy was uncomplicated until 22 and 2/7 weeks gestation when the mother developed preterm labor and had cervical changes. she was treated with magnesium sulfate, betamethasone and indomethacin. she remained hospitalized on bed rest. on the day of delivery, she presented with full cervical dilatation. delivery was performed via cesarean section. this infant emerged with some respiratory effort. his apgars were six at one minute and eight at five minutes. his birth weight was 820 grams, 50th percentile. birth length was 33 cms (50th percentile) and birth head circumference 23.5 cms (50th percentile). physical examination: admission physical examination reveals an extremely preterm infant; anterior fontanel soft and flat; eyelids fused. palate intact. diffuse bruising noted over the lower half of the body. respiratory effort was poor air entry in the bases but equal breath sounds with retractions, improved after intubation and surfactant therapy. heart was regular rate and rhythm, no murmur. perfusion was fairly good. soft abdomen, three vessel umbilical cord. testes up in the canal bilaterally. tone and movement appropriate with gestational age. hospital course: 1.) respiratory status: he received two doses of surfactant and was started initially on high frequency auscultatory ventilation. he has remained on that ventilator. his chest x-ray initially showed some pulmonary interstitial emphysema which has since resolved and has evolved to chronic lung changes. at the time of transfer, he is on a mean airway pressure of 11, a delta p of 20 hertz of 15, requiring 25 to 35% oxygen. a capillary blood gas on had a ph of 7.39 and a c02 of 48. at that time, the amplitude was decreased from 22 to 23. on examination, he has mild to moderate subcostal retractions. his breath sounds have some scattered crackles and are equal. 2.) cardiovascular: has received two courses of indomethacin, the first one for presumed patent ductus arteriosus on day of life #3, when a murmur was present. the murmur resolved after treatment. on , he had increasing ventilatory requirements and had an echocardiogram which showed a small, patent ductus arteriosus. at that time, he received a second course of indomethacin. a clinical decompensation on prompted a repeat echocardiogram which showed a moderate sized patent ductus arteriosus, thus scheduling the ligation. he required pressor support for the first 48 hours of life and has remained normotensive since that time. on examination, he has a grade one to two over six systolic ejection murmur at the left sternal border. he is pink and well perfused. 3.) fluids, electrolytes and nutrition: at the time of transfer, his weight is 930 grams. his length is 36 cms and his head circumference is 23.75 cms. he had first begun enteral feeds on day of life 15 and had reached 30 cc per kg per day at the time of the last echo and then was made n.p.o. again. he initially had umbilical, arterial and venous lines, peripherally inserted venous catheter was placed on . it originates in the left antecubital area and has its tip in the junction of the innominate vein and superior vena cava. he is receiving parenteral nutrition, currently at 130 cc per kg per day, 3.5 grams per kg per day of protein and 3 grams per kg per day of intralipids. he is on 16% dextrose, maintaining blood glucose levels in the 80 to 110 range. he is also receiving 30 meq per liter of sodium, 10 meq per liter of potassium and 2 meq per liter of calcium. his last electrolytes on were sodium of 133, potassium of 5.9; chloride of 98; bicarbonate of 22. his other nutritional laboratory studies done on were calcium of 10, phosphorus of 8, alkaline phosphatase of 430 and triglycerides of 90. he has a urine output of approximately 2.3 cc per kg per hour. his last bun and creatinine on revealed a bun of 19; creatinine of 1.0. gastrointestinal: he has been treated with phototherapy for hyperbilirubinemia of prematurity from day of life one until day of life 11. peak bilirubin occurred on day of life 15 which was a rebound of total of 4.0, direct of 0.5 and direct of 3.5. his last bilirubin on was total of 1.7, direct of 0.6. he has had some intermittently guaiac positive stools but his kub's have shown well distributed polygonal bowel loops, no pneumatosis and no dilation. hematology status: his hematocrit on was 32. he has received three blood transfusions of packed red cells, last on . his blood type is ab positive, dat negative. infectious disease: was started on ampicillin and gentamycin at the time of admission for sepsis suspicion. antibiotics were discontinued after 48 hours when the blood cultures were negative and he was clinically well. on day of life ten, he presented with a clinical decompensation and was started on ampicillin and gentamycin. that was changed to vancomycin and gentamycin. based on his chest x-ray, it was felt to be pneumonia. he completed ten days of antibiotics on . he is currently on no antibiotics. neurology: he first had a head ultrasound on and this was within normal limits. his second head ultrasound on showed a left intraventricular hemorrhage. the last head ultrasound on showed a resolving intraventricular hemorrhage. he has not yet had an ophthalmology examination. psychosocial: his twin brother is still an inpatient in this neonatal intensive care unit. the parents are very involved in the infant's care. the infant is transferred to for ligation of his patent ductus arteriosus. primary pediatrician has not yet been identified. the infant is currently on no medications except for his intravenous fluid of parenteral nutrition and intralipids. his state newborn screen was sent on . interim discharge diagnoses: prematurity, 25 and 1/7 weeks gestation. twin #2. status post respiratory distress syndrome. status post pulmonary interstitial emphysema. evolving chronic lung disease. sepsis ruled out. status post presumed pneumonia. patent ductus arteriosus status post hyperbilirubinemia of prematurity. anemia of prematurity. reviewed by: , m.d. dictated by: medquist36 d: 05:43/t: 04:52 job#: procedure: venous catheterization, not elsewhere classified continuous invasive mechanical ventilation for 96 consecutive hours or more spinal tap incision of lung parenteral infusion of concentrated nutritional substances insertion of endotracheal tube enteral infusion of concentrated nutritional substances other phototherapy prophylactic administration of vaccine against other diseases transfusion of packed cells other surgical occlusion of vessels, thoracic vessels circumcision diagnoses: pneumonia, organism unspecified twin birth, mate liveborn, born in hospital, delivered by cesarean section extreme immaturity, 750-999 grams respiratory distress syndrome in newborn neonatal jaundice associated with preterm delivery chronic respiratory disease arising in the perinatal period primary apnea of newborn 25-26 completed weeks of gestation interstitial emphysema and related conditions 

Answer: The patient is high likely exposed to