Immunization is an invaluable tool in preventing the morbidity and mortality associated with many infectious diseases. The CDC currently recommends that children obtain immunizations against 11 diseases. We examined immunization rates in Louisiana children aged 19-35 months from 1995-2003 and compared these rates with the rates in neighboring states and the national coverage rate. Coverage rates were affected by the number of vaccinations in a series and the year of life at which the vaccines are received. We also found discrepancies in coverage rates of immunizations that should be given simultaneously. While Louisiana coverage rates have improved after a dip in 2001, we suggest steps to help physicians further improve coverage rates.