1. Division of Vector Management, Pennsylvania Department of Environmental Protection, 2575 Interstate Drive, Harrisburg, Pennsylvania 17110.
2. Center for Vector Biology and Zoonotic Diseases and Northeast Regional Center for Excellence in Vector-Borne Diseases, Connecticut Agricultural Experiment Station, 123 Huntington Street, New Haven, Connecticut 06511.
3. Division of Vector-Borne Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, 3156 Rampart Road, Fort Collins, Colorado 80521.