Factors influencing vaccine hesitancy among United Kingdom adolescents in a senior high school environment and actions to address it.

We explored adolescent viewpoints on vaccines and hesitancy using an anonymized, validated, self-completed electronic questionnaire amongst state-school Year 12-13 adolescents in London, UK. As the response rate was low (Cohort 1;  = 112/486, 23.0%), we repeated the survey with incoming students (cohort 2,  = 256/275; 93%).