Practice Implementation Strategies and Outcomes Regarding Influenza Immunization

Site 1Site 2Site 3Site 4Site 5
No. of children 6–21 mo of age143512331098704723
Implementation strategies
    Vaccinate at all visit typesYesYesYesYesYes
    Dedicated influenza clinicsNoYesYesYesYes
    Influenza clinic characteristicsNot applicable“Shot only” visits 7 half-days per week for 9 wk, appointments needed, medical records pulled10 weekend clinics (approximate volume per clinic: 50*), appointments needed, medical records pulled6 weekend/evening clinics (approximate volume per clinic: 300*), no appointment needed, medical records not pulled4 weekday/weekend clinics (approximate volume per clinic: 750*), appointments needed, medical records not pulled
    Influenza shots for adultsNoYesYesYesYes
Immunization outcomes
    % immunized in 2002–2003 vs 2003–200419 vs 5442 vs 759 vs 4024 vs 7515 vs 64
    % immunized by visit type in 2003–2004
        “Shot-only” visit2226193139
        Well-child care visit2342173619
        Illness visit87386
  • * Volumes listed are total clinic volumes, including vaccinations given to children of all ages and to adults.

  • Rates for 2002–2003 represent immunization rates for all 6- to 21-month-old children, based on billing data; rates for 2003–2004 represent rates for intervention and control groups combined, based on billing and immunization registry data.

  • Percentages sum to the total percent immunized in 2003–2004.