This choropleth map visualizes the distribution of disease outbreaks across the United States, with each state shaded according to the number of reported illnesses. The map uses a linear color scale ranging from white to pink, where darker shades indicate higher outbreak counts. Built with D3 v5 and React, the visualization uses `geoAlbers`, `geoPath`, and `geoGraticule` for geographic projections and rendering, while `topojson`'s feature and mesh functions process the US atlas data. The outbreak data comes from the CDC's National Outbreak Reporting System.