Date: 05 Apr 2014

Characterization of Chronic Hepatitis B Cases Among Foreign-Born Persons in Six Population-Based Surveillance Sites, United States 2001–2010

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National surveys indicate prevalence of chronic hepatitis B among foreign-born persons in the USA is 5.6 times higher than US-born. Centers for Disease Control and Prevention funded chronic hepatitis B surveillance in Emerging Infections Program sites. A case was any chronic hepatitis B case reported to participating sites from 2001 to 2010. Sites collected standardized demographic data on all cases. We tested differences between foreign- and US-born cases by age, sex, and pregnancy using Chi square tests. We examined trends by birth country during 2005–2010. Of 36,008 cases, 21,355 (59.3 %) reported birth in a country outside the USA, 2,323 (6.5 %) were US-born. Compared with US-born, foreign-born persons were 9.2 times more frequent among chronic hepatitis B cases. Foreign-born were more frequently female, younger, ever pregnant, and born in China. Percentages of cases among foreign-born persons were constant during 2005–2010. Our findings support information from US surveillance for Hepatitis B screening and vaccination efforts.