Found this through a d3 tutorial on how to create these types of visualizations: https://observablehq.com/@mbostock/the-impact-of-vaccines https://observablehq.

Found this through a d3 tutorial on how to create these types of visualizations: https://observablehq.com/@mbostock/the-impact-of-vaccines https://observablehq.com/@mbostock/the-impact-of-vaccines