RESEARCH ARTICLE Seroprevalence and risk fa

an mals including humans [1,2]. Toxoplasmosis caused by ies indicated that the seroprevalence ranged from 4.4% Yin et al. BMC Veterinary Research (2015) 11:41 DOI 10.1186/s12917-015-0358-0in Tibetan sheep and further understand the potentialGansu province 730046, PR ChinaFull list of author information is available at the end of the articleT. gondii has been considered to be one of the major causes of abortion and neonatal mortality in sheep, thus, the infection is of great economic importance to the sheep industry [3]. Furthermore, humans can be infected by consuming undercooked meat, which is a risk factor for human health [4]. to 29.8 % in sheep [5-7]. Tibetan sheep, a specific species being cold and hypoxia resistant, mainly live in the al-pine and pastoral areas, and they are an important eco-nomic resource for local people. Although two studies about the seroprevalence of T. gondii infection in Tibetan sheep were carried out in Tibet and Qinghai province [6,7], little information is available on the sero-prevalence and risk factors for T. gondii in Tibetan sheep in Gansu province. Since Gansu province is one of the largest industrial regions for Tibetan sheep, it is im-portant to quantify the prevalence of T. gondii infectio