1. Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, 3156 Rampart Rd., Fort Collins, CO 80521 (emossel@cdc.gov; mbcrab@gmail.com; grv0@cdc.gov; fmw2@cdc.gov; AKP7@cdc.gov; millerbr1@msn.com)
2. Corresponding author, e-mail: emossel@cdc.gov
3. Department of Arbovirology, Uganda Virus Research Institute (UVRI), PO Box 49, Entebbe, Uganda (jjlutwama03@yahoo.com)