Parental Attitudes Toward Childhood and Adolescent Vaccination in Poland in 2026: Vaccination Uptake and Retrospectively Reported Changes Since the Pre-COVID-19 Period

Background/Objectives: Parental attitudes toward vaccination influence the timely and complete immunization of children, including uptake of recommended vaccines. This study assessed self-reported compliance with mandatory vaccination, use of recommended vaccines, and parental attitudes toward childhood and adolescent vaccination in Poland, including regional variation and retrospectively reported changes since the pre-COVID-19 period.