Getting Terminology Right Really Matters, Especially in a Pandemic

(drmalcolmkendrick.org)

The Centers for Disease Control basically confused the Infection Fatality Rate and the Case Fatality Rate, which are very different, and in this case, off by an order of magnitude. They did this when comparing Influenza to Covid-19. The end result: Covid-19 seemed way more dangerous at the outset than it's turning out to be.