1. Cristina Carias, Bradford Greening Jr, Emily B. Kahn, and Martin I. Meltzer are with the Health Economics and Modeling Unit, Division of Preparedness and Emerging Infections, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA. Jonathan D. Lehnert, Bishwa B. Adhikari, and Samuel B. Graitcer are with the Immunization Services Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention....