1. Virginia Department of Health, Richmond, Virginia.
2. Division of Infectious Diseases and International Health, University of Virginia Health System, Charlottesville, Virginia.
3. US Army Public Health Command, Aberdeen Proving Ground, Maryland.
4. Department of Biological Sciences, Old Dominion University, Norfolk, Virginia.
5. School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Durban, South Africa.
6. Fairfax County Health Department, Fairfax, Virginia.
7. Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.
8. North Carolina Agricultural and Technical State University, Greensboro, North Carolina.