Update for the week of 2/14-2/20:
For the week of 2/14-2/20, there were 41,443 new cases, 663,097 new tests and 6.25% new case positivity for the week.
Week over week, this represents a 14.9% decrease in new cases on 10.5% fewer tests with a 4.8% decrease in new case positivity.
The reduction in weekly new tests are likely due to the lower number of symptomatic cases. If you look at the sentinel monitoring of COVID-like illness Emergency Department visits, the trend has been a significant decrease. For the weeks I've been tracking this data, the new case positivity has been 8.37%, 7.2%, 6.57%, 6.25%. Extrapolating, the new case positivity should be under 5% in 3 weeks or so if the trends continue.
Agreed that the reduction in testing is due to the decline in symptomatic infection: People who aren't sick don't rush out to get tested.
But you can't just extrapolate a declining trend in a straight line. I've seen others try to do that and use the trend to claim that the pandemic would be over by June 2020.. by October 2020... etc..
Right now, the big threat is that behavior will be normalized too quickly, creating another spike. Epidemiologists are on the look out for another potential surge in March/April.
The IHME model is showing the potential of an April wave, though their predictive forecast is that we will not ave another wave, though the decline will slow down. (They predict that by April, we will be in a similar place as we were in September 2020, and by summer we can be around 30,000 infections per day)