PacSci Blog

Recent Stories

Celebrating Betty’s Impact

Recent Stories Longtime Pacific Science Center supporter and emerita Board Member Elisabeth “Betty” Bottler left us on August 13, 2020 after 95 years. PacSci honors and remembers Betty for her...

COVID-19 in King County WA – August 10 Report

Recent Stories Update from Public Health – Seattle & King County Public Health has updated the data dashboard. The daily summary shows that there were 16,749 confirmed cases of COVID-19 in King County as of 11:59 on August 9, 148 more than the previous day. There...

COVID-19 in King County WA – August 6 Report

Recent Stories Update from Public Health – Seattle & King County Public Health has updated the data dashboard. The daily summary shows that there were 16,138 confirmed cases of COVID-19 in King County as of 11:59 on August 5, 192 more than the previous day. There...

COVID-19 in King County WA – August 1 Report

Recent Stories Update from Public Health – Seattle & King County Public Health has updated the data dashboard. The daily summary shows that there were 15,634 confirmed cases of COVID-19 in King County as of 11:59 on August 2, 124 more than the previous day. There...

COVID-19 in King County WA – May 8 Report

by | May 8, 2020

Update from Public Health – Seattle & King County

Public Health has updated the data dashboard. As of 11:59 p.m. yesterday, May 7, there were 6,940 confirmed cases of COVID-19 in King County, 77 more than the previous day. There have been 485 confirmed deaths in King County due to COVID-19, 7.0% of all confirmed cases.

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

Observations

The first graph above shows new cases (blue bars) and the 7-day average (red line). Of the 77 cases reported today, 65 were confirmed yesterday and the remaining 12 were confirmed in previous days. The 7-day average of new cases per day peaked at 191 on April 1. The average for the last 7 days remains at 78 new cases per day. How can the trailing 7-day average remain at 78 when the red line shows a clear decline in the last few days? Because Public Health new cases to the totals for previous days.

The second graph below shows the total case count. With 6,940 total cases as of 11:59 p.m. yesterday, the compound daily growth rate during the last 7 days has been 1.2%, slightly less than the 1.4% rate during the prior 7 days. If we start with 6,940 cases, a 1.2% compound daily growth rate (1.173% to be precise) yields 81 new cases in a day, 590 new cases in a week, and 2,680 new cases in four weeks. In order for the number of new cases per day to fall below 10, the compound daily growth rate will have to fall below 0.15%. I don’t see this happening in the month of May considering how elongated the decline in the 7-day average has become (red line in the first graph).

The third graph below 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.

Share

Follow