NM Cocoros, MPH, Massachusetts Dept of Public Health. J Zipprich, PhD, California Dept of Public Health. D Kuhles, MD, Nassau County Dept of Health; E Rausch-Phung, MD, CR Schulte, DS Blog, MD, New York State Dept of Health. P Lurie, MD, Pennsylvania Dept of Health. R Wiseman, MPH, Texas Dept of State Health Svcs. C Kroll MPH, Clark County Public Health; C DeBolt, MPH, Washington State Dept of Health. PK Kutty, MD,* SB Redd, AE Barskey, MPH, JS Rota, MPH, PA Rota, PhD, GL Armstrong, MD, WJ Bellini, PhD, KM Gallagher, DSc, Div of Viral Diseases, National Center for Immunization and Respiratory Diseases; AS Mahamud, MD, EIS Officer, CDC. *Corresponding contributor: Preeta Kutty, Div of Viral Diseases, National Center for Immunization and Respiratory Diseases, CDC, email@example.com.