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roprevalence of brucellosis varies between 2 % and 6 % in Turkey (4). In some high-risk groups, this rate may increase up to 12.5 % (5,6). Children may con-stitute 20 to 30 % of all brucellosis cases in the world, especially in the endemic regions (1). Data on the seroprevalence of brucellosis in child population are very limited. The objective of this study was to research brucellosis seroprevalence in 7 districts of Yozgat province in Turkey. Yozgat province is locat-ed in Middle Anatolia and has 14 districts, including Sorgun. Sorgun State Hospital is the reference hospi-tal for the 7 districts included in the study. Sorgun State Hospital serves about 250,000 people, approxi-mately 90,000 of them being aged below 18 years. Public health laboratory records of Yozgat province indicate that 778 people were diagnosed with bru-cellosis between 2007 and 2013 in Yozgat province, and 107 of them were below 18 years of age. An effective vaccine for human beings is not yet avail-able; thus, protection efforts through pasteurization of dairy products and brucellosis control and eradi-cation programmes in animals are essential. MATERIALS AND METHODS This study was conducted in 7 districts of Yozgat prov-ince between June and September 2012. Yozgat prov-ince is located in the Middle Anatolia region where brucellosis is endemic. We aimed to examine the prev-alence of brucellosis among children in this area. Seroprevalence of Brucellosis among Children i