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: prenatal laboratory studies: a positive, antibody negative, hepatitis b surface antigen negative, rpr nonreactive. rubella immune and gbs unknown. past medical history: maternal history significant for infertility and endometriosis. this pregnancy was ivf with conception with a reduction from triplets to twins. serial fetal ultrasounds were all reportedly normal. the mother presented on the day prior to delivery with spontaneous premature rupture of membranes but no clinical evidence of chorioamnionitis. the mother was started on ampicillin and erythromycin and the infants were delivered on the 5th via cesarean section for failure to progress. there were no known sepsis risk factors except for the prolonged rupture of membranes. twin a emerged floppy without spontaneous respiratory effort. he received positive pressure ventilation for 30 seconds followed by facial c-pap. he responded well to these measures. his apgars were 6 at one minute and 8 at five minutes. he was transported to the neonatal intensive care unit for further management. physical examination on admission: he had a weight of 2.49 kilograms; he was 99% saturated on room air. his vital signs were stable. in general he was in no distress and pink, but slightly hypotonic. heent: his anterior fontanel was normal and flat. his oropharynx was clear with no cleft. he had no nasal flaring. no neck masses. cardiovascular: he had a regular rate and rhythm with no murmur. his lungs are clear with good aeration and no retractions. abdomen was soft with no organomegaly. extremities showed no hip clicks. neurologic examination was significant for slight hypotonia. skin was unremarkable. hospital course by systems: 1. respiratory: the patient never had any respiratory distress and remained on room air throughout his stay. 2. cardiovascular: occasional mild bradycardic episodes with o2 desaturation not on caffeine. 3. fluids, electrolytes and nutrition: the patient was initially started on intravenous fluids and then worked up on feeds. he is currently receiving 150 cc per kilo per day of e-20 and growing well. at this time, he is still being half gavage fed. he has mild intermittent spells, especially when p.o. feeding. 4. infectious disease: the patient was initially started on ampicillin and gentamicin for a 48 hour rule out sepsis. his blood cultures remained negative during his entire stay. antibiotics were discontinued after 48 hours. 5. hematology: cbc on admission was a white count of 14.2; his hematocrit was 49.4, and his platelet count was 320. he had 49 neutrophils, 0 bands, 43 lymphs. he has had no hematologic issues during his stay. 6. sensory: the patient still requires ears testing. condition at transfer: good. disposition: the patient is being transferred to the transitional care unit. primary pediatrician is dr. . state screen is pending. he has received no immunizations. discharge diagnoses: 1. prematurity. , m.d. dictated by: medquist36 procedure: non-invasive mechanical ventilation prophylactic administration of vaccine against other diseases circumcision audiological evaluation diagnoses: need for prophylactic vaccination and inoculation against viral hepatitis observation for suspected infectious condition twin birth, mate liveborn, born in hospital, delivered by cesarean section other preterm infants, 2,000-2,499 grams routine or ritual circumcision 

Answer: The patient is high likely exposed to