Department of Numbers

Washington COVID-19 Case and Testing Statistics

As of Friday April 03 2020, Washington had 6,585 cases of COVID-19. Over the past week, Washington was finding 483 new cases per day on average and recording 16.4 deaths per day. Data for Washington is provided by the COVID Tracking Project and will be updated daily. The COVID Tracking Project gives Washington a data quality grade of: A

Compare Washington COVID-19 data to other states.

Washington average daily new cases

The chart below shows the trend of new case discovery for Washington. Flattening the curve of new daily cases will help alleviate the burden on hospitals and healthcare workers and help ensure that patients that need critical care can get it.

Note: If testing is insufficient the above curve will underrepresent true case discovery. Nationwide daily testing per million residents is currently 336.1. Reported Washington testing per million residents per day is 619.8.

Washington average daily deaths

Deaths from COVID-19 are likely better reported than the true number of positive cases. As a result, the trend in average daily deaths from COVID-19 might be a more telling measure of progression through the outbreak than daily average positive cases.

Statistics for positive cases of COVID-19 in Washington

Total Cases and Total Cases per 1M residents are cumulative counts. Daily Positive measures are rolling 7 day averages.

Date Total
Cases
Total
Cases
per 1M
Daily
Positives
(7d Avg)
Daily
Positives
per 1M
(7d Avg)
04/03/20 6,585 865 483 63.4
04/02/20 5,984 786 486 63.9
04/01/20 5,634 740 452 59.4
03/31/20 4,896 643 382 50.2
03/30/20 4,896 643 414 54.4
03/29/20 4,310 566 360 47.2
03/28/20 3,723 489 314 41.2
03/27/20 3,207 421 262 34.4
03/26/20 2,580 339 199 26.1
03/25/20 2,469 324 208 27.3
03/24/20 2,221 292 188 24.7
03/23/20 1,996 262 175 23.0
03/22/20 1,793 235 164 21.6
03/21/20 1,524 200 137 17.9
03/20/20 1,376 181 131 17.2

more history ...

Death statistics for COVID-19 in Washington

Total Deaths and Total Deaths per 1M residents are cumulative counts. Daily Death measures are rolling 7 day averages.

Date Total
Deaths
Total
Deaths
per 1M
Daily
Deaths
(7d Avg)
Daily
Deaths
per 1M
(7d Avg)
04/03/20 262 34.4 16.4 2.2
04/02/20 247 32.4 16.4 2.2
04/01/20 224 29.4 14.4 1.9
03/31/20 195 25.6 12.1 1.6
03/30/20 195 25.6 14.3 1.9
03/29/20 189 24.8 13.6 1.8
03/28/20 175 23.0 13.1 1.7
03/27/20 147 19.3 10.4 1.4
03/26/20 132 17.3 9.4 1.2
03/25/20 123 16.1 10.1 1.3
03/24/20 110 14.4 8.9 1.2
03/23/20 95 12.5 7.6 1.0
03/22/20 94 12.3 7.7 1.0
03/21/20 83 10.9 6.6 0.9
03/20/20 74 9.7 6.1 0.8

more history ...

COVID-19 testing statistics in Washington

All measures below are rolling 7 day averages except Total Tests and Total Tests per 1M residents which are cumulative counts of COVID-19 tests as of the date reported. Testing statistics are dependent on high quality reporting of negative test results by states. I'm only showing this data for states that don't have implausibly low testing rates and that have an A reporting grade from the COVID Tracking Project.

Date Total
Tests
Total
Tests
per 1M
Daily
Tests
(7d Avg)
Daily
Tests
per 1M
(7d Avg)
Daily
Positive
Rate
(7d Avg)
04/03/20 79,418 10,429 4,720 620 10.2%
04/02/20 74,798 9,823 5,787 760 8.4%
04/01/20 66,200 8,693 4,574 601 9.9%
03/31/20 65,462 8,597 4,504 591 8.5%
03/30/20 65,462 8,597 4,941 649 8.4%
03/29/20 59,206 7,775 4,584 602 7.8%
03/28/20 52,738 6,926 4,214 553 7.5%
03/27/20 46,380 6,091 3,667 482 7.1%
03/26/20 34,292 4,503 2,455 322 8.1%
03/25/20 34,181 4,489 2,865 376 7.3%
03/24/20 33,933 4,456 3,064 402 6.1%
03/23/20 30,875 4,055 2,951 387 5.9%
03/22/20 27,121 3,562 2,765 363 5.9%
03/21/20 23,243 3,052 2,382 313 5.7%
03/20/20 20,712 2,720 2,272 298 5.8%

more history ...

A final word on this analysis

In order to manage the outbreak, states need to increase their testing capacity. As testing increases, the number of detections as a fraction of total tests (positive rate) should hopefully decrease over time. If a state is able to test widely enough (at least 300 tests daily per million residents, probably more) to drive the positive rate down (less than 5%) there may be the potential to manage a regional outbreak with isolation, contact tracing and quarantine South Korea has.

Please take my calculations and amatuer epidemiological speculations with a huge grain of salt as I'm moving quickly to get what I hope are meaningful measures online. There may be errors in my data and my thinking!

These statistics were inspired by posts on Calculated Risk and the Bondad Blog regarding metrics to track for COVID-19.

Last but not least, thanks to the folks at COVID Tracking Project for making this data available to everyone.