Four years ago we learned that five years ago SARS-CoV-2 was wide across the USA.
> The findings of this study indicate that that it is possible the virus that causes COVID-19 may have been present in California, Oregon, and Washington as early as Dec. 13-16, 2019, and in Connecticut, Iowa, Massachusetts, Michigan, Rhode Island, and Wisconsin as early as Dec. 30, 2019 - Jan. 17, 2020.