4. Compare the following secondary outcome measures between intervention and usual care patients, overall and stratified by practice setting: 1) percent of adolescent patients with ≥ 1 Tdap vaccine; 2) percent of adolescent patients with ≥ 1 meningococcal (MCV4) vaccine; 3) percent of adolescent patients with ≥ 1 HPV vaccine; 4) percent of adolescent patients with ≥ 3 HPV vaccines; 5) percent of adolescent patients receiving ≥ 1 influenza vaccine during the preceding influenza season; 6) percent of adolescent patients with either a documented history of varicella disease or ≥ 2 varicella vaccines; 7) percent of adolescent patients with ≥ 2 MMR vaccines; 8) percent of adolescent patients with ≥ 3 hepatitis B vaccines; 9) percent of adolescent patients with ≥ 3 poliovirus vaccines; and 10) percent of adolescent patients with ≥ 1 missed vaccination opportunity, defined as having a patient visit to a primary care practice, being eligible for vaccination, and not receiving needed vaccines.