1. Jonathan D. Lehnert and Danielle L. Moulia are with IHRC, Inc., Atlanta, GA. Neil C. Murthy is with the Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta. Amy Parker Fiebelkorn and Samuel B. Graitcer are with the Immunization Services Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta. Sara J. Vagi and Stephanie A. Dopson are with the Division of State and Local Readiness, Office of Public Health...