Yes the UC Davis case was the straw the broke the camels back. They refused for a week to test that person due to them NOT meeting the old have to have been in China guidelines or have been near a CDC confirmed case. They had to eat crow and they changed the guidelines hours after that test came back positive. UC Davis has been only using droplet transmission protocols so they sent home a dozen workers to self isolation they need to start testing those people too. Droplet protocols are not enough for an aerosol virus they just admitted that by sending the staff to isolation the Chinese and Koreans already have said its aerosolized and you need those protocols which is full.face masks at a P100 or higher level.
That's not true either. The CDC said today at the press briefing that they found out about the case on the 23rd and that they recommended testing for COVID-19 on that same day.