Instagram founders launch COVID-19 spread tracker Rt.live

Instagramfounders Kevin Systrom and Mike Krieger have teamed up to launch their first product together since leaving the Facebook mothership. Rt.live is an up-to-date tracker of how fast COVID-19 is spreading in each state.
“Rt” measures the average number of people who become infected by an infectious person. The higher above the number 1, the faster COVID-19 races through a population, while a number below one shows the virus receding. For example, Rt.live displays that Georgia has