At the time of the study, Jessica A. Kattan was an Epidemic Intelligence Service Officer with the Centers for Disease Control and Prevention (CDC), assigned to the Infectious Diseases Section, Connecticut Department of Public Health, Hartford. Kathy S. Kudish is with the Immunization Program and Kristen Soto is with the Infectious Diseases Section, Connecticut Department of Public Health. Betsy L. Cadwell is with the Office of Surveillance, Epidemiology, and Laboratory Services, CDC, Atlanta, GA. James L...