Affiliation: | (1) Department of Epidemiology and Community Health, School of Veterinary Medicine, Louisiana State University, 70803 Baton Rouge, LA, USA;(2) Present address: FAO, Lusaka, Zambia;(3) Present address: Department of Veterinary Parasitology, Microbiology and Public Health, School of Veterinary Medicine, Oklahoma State University, 74078 Stillwater, OK, USA |