This animated scatter plot displays COVID-19 death and case averages across the United States over time, using rolling data from the New York Times. The visualization toggles between deaths and cases every 2.4 seconds, smoothly transitioning circles along the y-axis while the x-axis remains a time scale. Built with reusable D3.js chart components, the code leverages `scaleTime`, `scaleLinear`, `axisBottom`, and `axisLeft` to render the SVG. A `transition` with staggered delays animates circle positions, while `d3.csv` loads the NYT rolling-averages dataset directly from GitHub.