1. Bioinfoexperts, LLC, Thibodaux, Louisiana.
2. Medical Research Council Centre for Outbreak Analysis and Modeling, Department of Infectious Disease Epidemiology, Imperial College London, London, United Kingdom.
3. National Institute of Allergy and Infectious Diseases, National Institutes of Health, Baltimore, Maryland.
4. Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.
5. Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland.