Research question:
What is the evidence that Hepatits B Birth Dose in addition to three doses at 6,10 and 10 weeks prevents neonatal and perinatal HBV infection as well as long term complications?
PICO
P : neonates OR neonate OR infants OR newborn OR premature OR preterm
I : hepatitis b OR hep b OR hbv OR hepatitis b virus
AND
birth dose
C : no birth dose vaccination
O : prevention OR "prevention of complications" OR "long term complications" OR efficacy OR effectiveness