1. Influenza Division, National Center for Influenza and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia;
2. Member Consultant, Council of State and Territorial Epidemiologists, Atlanta, Georgia;
3. National Center for Emergency Medical Preparedness and Response, Texas A&M Health Science Center, Houston, Texas;
4. Department of Pediatrics, Dartmouth Medical School, and
5. Children’s Hospital at Dartmouth, Lebanon, New Hampshire; and
6. PATH and University of Washington School of Medicine, Seattle, Washington