meningococcal vaccine age :: Article Creator 2025 Vaccination Schedule: 0-18 Years Of Age 1. Hepatitis B (HepB) vaccine. (Min age: birth)At birth: • HBsAg-negative mother: administer 1 dose of monovalent HepB vaccine within 24hrs of birth for all medically stable infants ≥2000g. For infants <2000g, give 1 dose at chronological age 1 month or hospital discharge (whichever is earlier even if weight remains <2000g). • HBsAg-positive mother: administer 1 dose of monovalent HepB vaccine and hepatitis B immune globulin (HBIG) within 12hrs of birth, regardless of birth weight. For infants <2000g, administer 3 more doses of vaccine (4 total) beginning at age 1 month. Test for HBsAg and antibody to HBsAg (anti-HBs) at age 9–12mos or 1–2mos after final dose if the series was delayed. • Unknown HBsAg status: administer monovalent HepB vaccine within 12hrs of birth. For infants <2000g, add HBIG within 12hrs of birth, and 3 more doses of vacc...