RT [@Laurie_Garrett](https://twitter.com/Laurie_Garrett/status/1321627987847139329) I’ve said it before, but it bears repeating. There is one place in the world where a map of #COVID19 cases & deaths reveals a straight line, with a huge amount of disease on one side, very little on the other.
Where? The 3000+ mile border US/#Canada
It’s stark.
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