Ministry of Agriculture Livestock and Fisheries P.O. Box 402-10101 Karatina Kenya;
Kenya Field epidemiology and Laboratory Training Program P.O. Box 22313-00100 GPO Nairobi Kenya;
Food and Agriculture Organization P.O. Box 30470-00100 GPO Nairobi Kenya;
Department of Clinical studies University of Nairobi P.O. Box 29053-00625 Nairobi Kenya;