1. Center for Infection and Immunity, Mailman School of Public Health, Columbia University, New York, New York, USA
2. Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, California, USA
3. Laboratorio Nacional de Virología, Centro Nacional de Diagnóstico y Referencia, Ministry of Health, Managua, Nicaragua
4. Roche Madison, Madison, Wisconsin, USA
5. Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
6. Public Health Laboratory, New York City Department of Health and Mental Hygiene, New York, New York, USA
7. Biodefense Laboratory, Wadsworth Center, New York State Department of Health, Albany, New York, USA
8. WHO Collaborating Centre for Arbovirus and Viral Haemorrhagic Fever Reference and Research, Department of Viroscience, Erasmus University Medical Centre, Rotterdam, The Netherlands