- Children at risk for Hepatitis B (HB), unless hepatitis B serology is normal. Risk groups are children who have lived in Asia, Africa, Central and South America, Eastern Europe, Spain, Portugal, and Greece, children with known or suspected past or current hepatitis B infection, current or prior IV illicit drug use, current or prior dialysis, household contact with hepatitis B infected patient(s), current or prior high-risk sexual activity, body piercing or tattoos, mother known to have hepatitis B history. If vaccinated, presence of HBs Ab is normal.