An interesting chart

Oregon – 7 day moving average of total daily tests versus positive test results. Data for most recent two weeks or so is preliminary/provisional and is routinely updated as more data comes in. Hence the decline in the curve at right is an artifact of the delay in receiving data.

Just guessing that the recent upwards trend at right (days 209-225) is likely to be over 7,000 daily tests as recent positive test results have gone from the 400s up to 550 today and the two lines do correlate.

Update yep, a staggering 9,189 test results came in yesterday – about 50% above the normal run rate. After correcting for that, the number of positive results is exactly in line with the numbers found on recent days this week. Positive results re 5.7% – down from 7.7% last week and 6.0% the week before. Will want to watch hospitalizations next 1-2 weeks and deaths next 3-4 weeks to see if this is a big deal or a statistical artifact.

The state also announced a week ago that it would soon be able to double and triple the number of tests being done through use of the BinaxNOW rapid test, which may have a false positive rate of 3-6% (rates of other tests in the BinaxNOW product line).

We will know in a couple of weeks when the data up through this week is brought up to date.

Data from https://public.tableau.com/profile/oregon.health.authority.covid.19#!/vizhome/OregonHealthAuthorityCOVID-19SummaryTable_15889676399110/TotalPersonsTestedSummaryTable