Abstract

Abstract. Hepatitis B virus (HBV) strains among Israeli donors have been characterized for determinants d, y, w, and r. Of 60 consecutively positive donors, 78% had determinant y and 22% determinant d. Immigrants to Israel from North Africa, the Near and Middle East, and certain parts of Europe had almost exclusively determinant y of the d‐y pair. Among immigrants from North Central Europe, determinant y occurred less frequently; those from South Central Europe had an intermediate level. First‐generation Israelis of European background had the same frequency of determinant d as immigrants from Europe, suggesting the home as the most important site of transmission. All 25 HBV strains characterized for w and r, despite a diversity of geographic backgrounds, had only determinant w.

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