In a Channel 4 clip, Hugh Montgomery does some back-of-the-napkin math contrasting the normal flu against the coronavirus.

Montgomery assumes that on average, someone infected by the coronavirus infects 3 others and that someone with the normal flu infects 1.3 to 1.4 others. There’s still more to find out about that 3x figure, but the main point — that staying at home right now is for the good of everyone — still holds.

Become a member. Support an independent site. Make great charts.

See What You Get

Favorites

Shifts in How Couples Meet, Online Takes the Top

How do couples meet now and how has it changed over the years? Watch the rankings play out over six decades.

Pizza Place Geography

Most of the major pizza chains are within a 5-mile …

Who We Spend Time with as We Get Older

In high school, we spend most of our days with friends and immediate family. But then we get jobs, start a family, retire, and there’s a shift in who we spend our days with.

One Dataset, Visualized 25 Ways

“Let the data speak” they say. But what happens when the data rambles on and on?