te ???3 doses of HepB vaccine, ACIP states that additional doses not necessary if ???1 dose was given at ???24 weeks of age; if most recent dose was at <24 weeks, give an additional dose at ???24 weeks.131 Regardless of vaccination status, test for HBsAg if individual was born in Asia, Pacific Islands, Africa, or other regions where HBV is highly endemic.131 AAP recommends serologic testing for HB