Efraim Zadoff, an independent scholar expert in Jewish history in modern Latin America, is co-editor on Latin American Jewry of the new edition of the Encyclopaedia Judaica. He received an M.A. from the Institute of Contemporary Jewry of the Hebrew University of Jerusalem and a Ph.D. from Tel Aviv University. He is a member of AMILAT – Research Association of Latin American Jewry and co-editor of Judaica Latinoamericana. He is the editor and publisher of Enciclopedia de la historia y la cultura del pueblo judío (1998) and SHOÁ – Enciclopedia del Holocausto (2004), both in Spanish. He is a promoter and researcher of the Israel Commission on the Jewish Disappeared in Argentina and editor of its website.