United States National Immunization Survey-Child 2009-2010

The National Immunization Survey is conducted by the National Center for Immunizations and Respiratory Diseases and the National Center for Health Statistics at the Centers for Disease Control and Prevention. It began in April 1994 in order to collect data on childhood immunization coverage. It uses a list-assisted random-digit-dialing telephone survey methodology of household respondents, and a mailed survey to children’s health care providers. The target population for the survey is children aged 19-35 months at the time of the interview, and the mail-in portion of the survey collects data on all current recommended vaccines and doses. A major change for the 2009 survey was in sample areas; For the first time, interviews were conducted in the U.S. Virgin Islands. Additionally, one new sample area was created, and six others were rotated out of the sample. In total, the survey produced complete interviews for 25,241 children, and adequate provider data for 17,313 of those children.