Vacteens.org: A Mobile Web app to Improve HPV Vaccine Uptake.

U.S. HPV vaccine uptake remains below the Healthy People 2030 goal of 80% series completion. Parental concerns and misinformation about the efficacy and safety of the Human Papillomavirus (HPV) vaccine remain, and may be addressed by digital interventions tailored to their concerns. Reported here are results from a small scale randomized trial testing a mobile web app for parents and their adolescent daughters (ages 11-14 years) encouraging HPV vaccination in New Mexico, an ethnically-diverse U.S. state. A clinic-cluster randomized trial where pediatric clinics ( = 9) were recruited and randomized, and parent-adolescent pairs ( = 82) within clinics received either the mobile web app or Usual and Customary (UC) HPV Vaccination information. Parents completed online surveys at baseline and 3-months. Daughters' HPV vaccine data were collected from the New Mexico State Immunization Information System 1 year post baseline. Three month survey results found parents to have higher positive HPV vaccine beliefs, informed decision making, intent to vaccinate and vaccine confidence outcomes than UC parents. HPV vaccine data found higher first dose HPV vaccination (Pearson χ = 6.13, = 0.013, group 59.4%, UC group 40.6%), and higher HPV vaccination series completion (Pearson χ = 6.49, = 0.011, group 68.4%, UC group 31.6%). The small trial results showed the web app prompted positive vaccine-related attitudes and beliefs, and more HPV vaccination initiation and series completion. Mobile web apps can make decision-making tools for HPV vaccination widely available on digital platforms, reducing vaccine hesitancy, and confusion and increase HPV vaccine uptake.