1. Center for Ecology of Infectious Diseases, Institute of Bioinformatics University of Georgia Athens GA USA
2. Department of Infectious Disease University of Georgia Athens GA USA
3. Center for Communicable Disease Dynamics, Department of Epidemiology Harvard T.H. Chan School of Public Health Boston MA USA
4. Department of Molecular Virology & Microbiology Baylor College of Medicine Houston TX USA
5. Influenza Division Centers for Disease Control and Prevention Atlanta GA USA
6. Department of Epidemiology, Human Genetics & Environmental Sciences, School of Public Health University of Texas Health Science Center Houston TX USA
7. Department of Epidemiology and Biostatistics University of Georgia Athens GA USA