United States National Immunization Survey-Child 1999-2000

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. Major changes to the 1999 survey were the addition of questions on immunizations for rotavirus to the telephone interview, and the reformatting of the provider questionaire to accommodate two newly added vaccines. In total, the survey produced complete interviews for 34,442 children, and adequate provider data for 22,521 of those children.