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: baby boy was the 2130 gram 34 week infant born by normal sterile vaginal delivery to 30 year-old gravida 1, para 0 hepatitis b negative, rpr negative, rubella immune white female. mother presented at 33+ weeks experiencing contractions. she was treated with terbutaline and went on to have spontaneous rupture of membranes after which she received intravenous antibiotics and betamethasone. the infant was delivered with apgar's of 8 and 8 and was transferred to the neonatal intensive care unit where he underwent a sepsis evaluation. physical examination: admission physician was notable for a non-dysmorphic male infant with poor subcutaneous fat collection, inspiratory rales at both bases, no murmurs. abdomen soft without palpable liver, spleen or masses. gu showed a prepubertal male with both testicles descended. hips were normal and stable. back showed an intact spine. hospital course: the infant had an essentially smooth and uneventful hospital based course. 1. respiratory: the infant experienced no increased work of breathing or respiratory distress. he required no oxygen support at any time. 2. cardiovascular: there were no murmurs and vital signs remained stable throughout his hospital course. he did experience a few episodes of oxygen desaturation which self resolved and occurred in the context of feeding on day of life #3 and 4. there were never any difficulties with hyperbilirubinemia and he underwent no phototherapy. 3. infectious disease: he underwent an initial blood culture and cbc. the blood culture was negative at 48 hours and his 48 hour coverage of ampicillin and gentamycin was discontinued. the remainder of his hospital course was characterized by improved and increasing volumes of p.o. feeds. he never required nasal gastric feeding. he bottled directly and then went on to nurse successfully from his mother. consumed expressed pumped breast milk during his hospitalization. he did evident some initial temperature instability, but by day of life #9, he was able to wean successfully to open air and maintain his body temperature. he did not receive hepatitis b immunization during his hospital. he passed his car seat test and his hearing test prior to his discharge. assessment: 1. 34 week aga preterm infant, male. 2. negative sepsis evaluation. 3. transient apnea, bradycardia of prematurity. plan: the infant was discharged on all p.o. nursing to his parents with plans for follow up with his pediatrician in three days after discharge. , m.d. dictated by: medquist36 procedure: enteral infusion of concentrated nutritional substances circumcision diagnoses: observation for suspected infectious condition single liveborn, born in hospital, delivered without mention of cesarean section routine or ritual circumcision 33-34 completed weeks of gestation 

Answer: The patient is high likely exposed to