Hepatitis A in Internationally Adopted Children: Screening for Acute and Previous Infections

OBJECTIVE: The goal was to determine the prevalence of acute hepatitis A virus (HAV) infection and immunity among internationally adopted children. METHODS: Children seen at the International Adoption Center between September 25, 2006, and September 30, 2008, and were screened for HAV within 4 months after their arrival in the United States were eligible for the study. The age-and country-specific prevalence of acute HAV infection and immunity were determined. RESULTS: Overall, 288 children underwent HAV serological testing. Of the 279 with total HAV serological results, 29% had positive findings. Immunity varied according to region and country. The prevalence was lowest among children born in Asia/Pacific Rim region (17%) and highest among children born in Africa (72%). Only 13% of children CONCLUSIONS: HAV immunity among internationally adopted children varied according to age and country of origin; 1% had acute infections. HAV screening is useful for determination of the need for HAV immunization and for prevention of transmission to family members and close contacts. Pediatrics 2010;126:e1039-e1044