Poster prepared by Takele Taye Desta, David Wragg, Fabienne Tessiot, Lawal A. Raman, Judy Bettridge, Stacey E. Lynch, Kassech Melese, Marisol Collins, Tadelle Dessie, Zelalem Gutu Terfa, Androniki Psifidis, Paul Wigley, Pete Kaiser, Rob M. Christley, Joram M. Mwacharo and Olivier Hanotte for the Annual Meeting of the Society of Veterinary Epidemiology and Preventive Medicine, Madrid, Spain, 20-22 March 2013.