Incidence of Chronic Hepatitis B, U.S.-Acquired vs. Estimated Imported, United States, 1980–2008.

<p>Incidence of Chronic Hepatitis B, U.S.-Acquired vs. Estimated Imported, United States, 1980–2008.</p

U.S. Immigration by WHO Region of Origin, 1974–2008.

<p>U.S. Immigration by WHO Region of Origin, 1974–2008.</p

Number of Immigrants, Estimated HBsAg prevalence, and number of imported chronic hepatitis B cases by country of birth, 1974–2008.

<p>*From United States Department of Homeland Security, for persons obtaining legal permanent residency in United States (<a href="http://www.dhs.gov/files/statistics/publications/yearbook.shtm" target="_blank">www.dhs.gov/files/statistics/publications/yearbook.shtm</a>).</p><p>**World Health Organization regions. Estimated HBsAg prevalence by region is the weighted average of estimated prevalence for each country in the region.</p>‡<p>Top 10 countries by estimated number of imported chronic hepatitis B cases.</p