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Background  The aim of the current study was to assess the prevalence of bovine tuberculosis (BTB) in cattle, goats, and camels, and its zoonotic potential within the traditional livestock raising communities in four regions of Eritrea. The Single Intradermal Comparative Tuberculin Test (SICTT) as indicator of  M. bovis  infection was conducted on 1077 cattle, 876 goats, and 195 camels. To elucidate possible risk factors for BTB transmission between animals and its potential zoonotic implication, questionnaire based face-to-face interviews were conducted in households of which 232 raised cattle, 128 goats, and 29 camels.    Results  The results of the SCITT were interpreted using the OIE standard (> 4 mm cut-off) for positive responses. In cattle, individual animal ( n  = 1077) and herd ( n  = 413) prevalences were 1.2% ( n  = 13) [Confidence Interval (CI) 95% CI, 1.0–1.3%] and 3.2% ( n  = 13) (95% CI, 3.0–3.4%), respectively. In goats ( n  = 876), none of the animals was positive. In camels, individual animal ( n  = 195) and herd ( n  = 70), BTB prevalences were 1.5% ( n  = 3) (95% CI,1.4–1.6%) and 2.9( n  = 2) (95% CI, 0.9–4.6%), respectively. Overall, male animals were more at risk (OR = 2.6; 95% CI:1.0–8.7) when compared to females. Sharing of water points, introduction of new animals into herds and migration of animals over large distances were common events that may contribute to intra and inter-species transmission of BTB. Consumption of raw milk, lack of BTB transmission awareness, and low levels of education were common in the farming communities.    Conclusion  The current study highlighted a low prevalence of  M. bovis  in cattle, goats and camels in extensive traditional livestock in Eritrea. Despite this, the spatial distribution of affected animals across most of the sampled regions and consumption of unpasteurized milk warrants surveillance, cautious and timely control measures for the disease.    Electronic supplementary material  The online version of this article (10.1186/s12917-018-1397-0) contains supplementary material, which is available to authorized users.

Prevalence of bovine tuberculosis in cattle, goats, and camels of traditional livestock raising communities in Eritrea