The epidemiology of Brucella spp. and Mycobacterium bovis infections in Eritrea

agricultura periurbana antibodies anticorps anticuerpos brucella brucellose brucellosis brucelosis carga ganadera control methods dairy farms diagnosis diagnostic disease surveys elisa encuestas sanitarias epidemiologia epidemiologie epidemiology eritrea ganado granjas lecheras human population livestock mycobacterium bovis mycobacterium tuberculosis occupational hazards occupations ocupaciones pastoral society population humaine riesgos ocupacionales risque professionnel skin tests sociedad pastoral stocking density suburban agriculture taux de charge test elisa tuberculose tuberculosis