Institution: | 1. California Department of Public Health, Vector-Borne Disease Section, Richmond and Sacramento, California, United States of America;2. California Department of Public Health, Division of Communicable Disease Control, Richmond, California, United States of America;3. Department of Pathology, Microbiology & Immunology, School of Veterinary Medicine, University of California, Davis, California, United States of America;Louisiana State University, UNITED STATES |