NEW: today brings a fresh chart to our Covid #dataviz repertoire: heatmap of case rates by age group over time, inspired by @VictimOfMaths

Here’s Spain, showing how at first the resurgence was concentrated in young adults, but it has since spread to older, more vulnerable groups pic.twitter.com/QLHHEqo9wb

— John Burn-Murdoch (@jburnmurdoch) September 10, 2020