1. The Arbovirus Laboratories, Wadsworth Center, New York State Department of Health Slingerlands, New York.
2. Department of Biological Sciences, College of Arts and Sciences, State University of New York at Albany, Albany, New York.
3. Cary Institute of Ecosystem Studies, Millbrook, New York.
4. Department of Biomedical Sciences, School of Public Health, State University of New York at Albany, Albany, New York.