1Australian Biosecurity Cooperative Research Centre for Emerging Infectious Disease, St. Lucia, Queensland, Australia.
2Australian Infectious Disease Research Centre, School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, Queensland, Australia.
3Universidad Nacional, Heredia, Costa Rica
4Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine Iowa State University, Ames, Iowa
5Ministry of Agriculture and Animal Husbandry, Universidad Nacional, Heredia, Costa Rica.
6The International Livestock Research Institute, Nairobi, Kenya