2025 WA GIS Conference

Washington State Department of Health (WADOH) operates two vital vaccine programs: the Adult Vaccine Program (AVP), offering free vaccines to uninsured adults aged 19 and older, and the Childhood Vaccine Program (CVP), ensuring all children under 19 receive routine immunizations at no cost. These programs are essential for equitable access to vaccines, preventing vaccine-preventable diseases, and reducing health disparities across the state.

To support these programs, WADOH originally developed a custom JavaScript application that allowed residents to locate nearby vaccine providers. However, maintaining this app was challenging due to limited staff with specialized coding skills. Beyond technical constraints, WADOH’s commitment to align with the CDC’s Data Modernization Initiative (DMI) priorities necessitated migration to ArcGIS Experience Builder.

We used Experience Builder’s the drag-and-drop functionality and responsive design capabilities to create a modern vaccine provider locator web app optimized for mobile devices. This tool expands accessibility for individuals relying on smartphones and tablets to access vaccine information. Public health planners may also use the app to visually identify geographic gaps in provider coverage, enabling targeted resource allocation to areas of greatest need. This aligns with DMI’s goal to support actionable public health decision-making to promote health equity. In addition, by transitioning from a legacy system to Experience Builder, we ensured sustainability, scalability, and responsiveness to evolving technological needs and emerging public health threats.

This presentation will showcase the app’s development workflow, highlight key features, discuss accessibility considerations, and explore its role in advancing public health goals statewide.