Visualizing how fast the pandemic is getting better or worse, state by state

Well over a year into the Covid-19 pandemic, visualizations of case data have become ubiquitous. By far, the most popular metric that public health officials and media outlets rely on is the daily count of new cases.

But as the Delta wave picked up steam in the U.S., STAT introduced a new metric that helps detect early changes in case trends: case acceleration.

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