Today’s report on COVID-19 in King County | Sun Apr 26

This daily synthesis of the Public Health data is provided by Will Daugherty of Pacific Science Center.  Thanks Will!

Public Health has updated the data dashboard.  As of 11:59 pm yesterday, April 25, there were 5,912 confirmed cases of COVID-19 in King County, 101 more than the previous day.  There have been 407 confirmed deaths in King County due to COVID-19, 6.9% of all confirmed cases.

The numbers that Public Health reports each day include delayed results from previous days.


The three graphs below chart new cases, total case count and the logarithmic trajectory of cases. 

The first graph shows new cases (blue bars) and the 7-day average (red line).  Of the 101 new cases reported today, 75 were confirmed yesterday and the remaining 26 were confirmed in previous days but reported to Public Health in the last day, resulting in restatements of the totals for previous days.  The 7-day average has been in decline since April 1.  The trailing 7-day average is now 86 new cases per day, just below where it was (87) on March 20.

The second graph shows the total case count.  With 5,912 total cases as of 11:59 pm yesterday, the compound daily growth rate during the last 7 days has been 1.6%, less than the 2.3% rate during the prior 7 days.  At a 1.6% compound daily growth rate, the number of cases doubles every 44.9 days.  One week ago, cases were doubling every 30.7 days.  Two weeks ago, cases were doubling every 20.4 days. Three weeks ago, cases were doubling every 11.3 days.

The third graph shows the trajectory of cases in King County with the total number of cases on the horizontal axis and the new cases on the vertical axis.  Each axis is on a logarithmic scale.  Each blue dot represents a daily report.  The dot farthest to the left is the February 28 report.  Time passes from left to right as the total case count grows.  The dot farthest to the right is today’s daily report.  We can see a clear change in the trajectory since March 28, shortly after Governor Inslee’s “Stay Home, Stay Healthy” order on March 23.

Will Daugherty welcomes your questions and comments.  His email is