[pasttense01]

The United States has land borders with two countries: Canada and Mexico. However these are NOT considered to be major sources of Covid infection in the U.S.--instead it has been China and Europe. The U.S. could have set up controls eliminating people movement by air as easily as Australia did--but it failed to do so.

[Wolfenstein98k]

This is an artefact of bad testing in non-developed countries.

You should assume it's ten or twenty times worse than the figures show, AT LEAST, in any countries that aren't fully transparent and rich enough to test widely.

Compare 477 to 16,000:

https://marginalrevolution.com/marginalrevolution/2021/01/su...