This study aims to evaluate the effect of a structured education program delivered in primary health care settings on parents of children aged 0-2 years. The education focuses on childhood vaccination and related health perceptions.

Parents will receive education covering childhood vaccines, vaccine hesitancy, evaluation of vaccine-related information obtained from digital sources, eco-anxiety, and perceived vulnerability to diseases. The study examines whether this education influences parents' levels of vaccine hesitancy, digital vaccine literacy, eco-anxiety, and perceived vulnerability to diseases. The findings are expected to contribute to the development of effective educational interventions in primary health care services to support informed parental decision-making regarding childhood vaccination.

Childhood vaccination is one of the most effective and cost-efficient public health interventions for preventing infectious diseases. However, vaccine hesitancy among parents has emerged as a significant public health concern, particularly in the context of misinformation disseminated through digital media. Parents' attitudes toward vaccination are influenced not only by face-to-face communication with health professionals but also by their ability to access, evaluate, and use vaccine-related information from online sources. In addition, environmental concerns and climate-related health risks have increased levels of eco-anxiety, which may influence individuals' perceptions of vulnerability to diseases and health-related decision-making.

This study is designed as a quasi-experimental, pre-test-post-test, control-group study to evaluate the effect of a structured education program delivered in primary health care services on parents of children aged 0-2 years. The study will be conducted at a Family Health Center in Van, Türkiye. Parents who meet the inclusion criteria and provide written informed consent will be enrolled in the study.

Participants will be assigned to either an intervention group or a control group. Parents in the intervention group will receive a structured education program consisting of three face-to-face sessions delivered once per week, with each session lasting approximately 30-40 minutes. The education program includes: (1) childhood vaccines, vaccine hesitancy, and common misconceptions; (2) digital vaccine literacy, reliable information sources, and coping with misinformation; and (3) eco-anxiety, environmental health concerns, perceived vulnerability to diseases, and coping strategies. The control group will receive routine services provided by the Family Health Center and will not receive any additional educational intervention.

Data will be collected using validated self-report instruments administered before the intervention and 15 days after completion of the final education session. The primary outcomes include changes in vaccine hesitancy, digital vaccine literacy, eco-anxiety, and perceived vulnerability to diseases. Sociodemographic information will also be collected. All data will be collected through face-to-face interviews in a private setting, and participant confidentiality will be ensured by using coded identifiers instead of personal information.

The study aims to determine whether education provided within primary health care services can effectively improve parents' attitudes and perceptions related to vaccination and child health. The results are expected to inform future public health education strategies targeting parents during early childhood.

Inclusion Criteria:

• Parents who have at least one child aged 0-2 years
• Attendance at the Van Tuşba Family Health Center
• Ability to read and write in Turkish
• Willingness to participate voluntarily in the study
• Provision of written informed consent

Exclusion Criteria:

• Individuals with a diagnosed psychiatric disorder
• Individuals with cognitive or sensory impairments that prevent effective communication
• Individuals who are unable to attend the education sessions
• Individuals who do not complete the baseline assessment

Individual participant data will not be shared due to ethical considerations and the absence of explicit consent for data sharing in the informed consent process. Data will be used only for the purposes of the present study and reported in aggregate form to ensure participant confidentiality.