Or: why denominators matter

Slowly but surely, we’re getting vaccinated. (In high-income countries, at least, but this isn’t a post about vaccine nationalism).

Covid case counts in the US have steadily decreased since mid-April, reaching numbers we haven’t seen since March of last year. It’s pretty phenomenal.

New Covid cases per day in the US (Source: New York Times)

So, this is…

The other day, this brilliant meme made its internet rounds:

Silly rabbit! Masks are for sheep!

and we need to talk about it.

But first, let’s talk about prisoners. Before you go any further, I’ve got two disclaimers at the bottom of this post that you should read. I’ll be here when you get back.

Right…

Mark Shrime, MD, PhD

O’Brien Chair of Global Surgery, Royal College of Surgeons in Ireland | Global surgeon | Decision analyst | Climber | 3x American Ninja Warrior Competitor

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