[dirk digler]

Originally Posted by tk13

I wouldn't be shocked if it was here earlier and nobody knew about it, Washington State said as much. If it was super widespread though we would have seen evidence of it though, like the places where it's gotten bad, or the pork plant in SD where a bunch of people got sick.

This scientist was one of the first people here in the US that started warning people early in January about human to human transmission so he knows his stuff.

There is a lot of Twitter chatter surrounding a rumor that circulation of #COVID19 in California in fall 2019 has resulted in herd immunity. This is empirically not the case. COVID-19 was first introduced into the USA in Jan/Feb 2020. 1/18

— Trevor Bedford (@trvrb) ?ref_src=twsrc%5Etfw">April 12, 2020




For (1), the @seattleflustudy has gone back and tested retrospective samples collected between Jan 1 and March 10 in our research assay. These samples were collected as part of our study of respiratory infections in the Seattle area. 3/18

— Trevor Bedford (@trvrb) April 12, 2020