Editor, 

California is doing much better in the fight against the coronavirus. The state Department of Public Health reports that test positivity rate, a key metric showing the level of infection in the state based on diagnostic testing results, has seen much improvement. Based on Sept. 11 data, it indicates that the seven-day positivity rate was 3.6%, i.e., less than 4% of all Californians who were tested during the last week for COVID-19 were infected, and over 96% tested negative.

Our neighbors are doing even better. Santa Clara County reports a seven-day test positivity rate of 3% based on Sept. 12 data. San Francisco County reports a seven-day average test positivity rate of 2.03% based on data through Sept. 10.

San Mateo County’s COVID-19 Lab Testing Data dashboard shows a 5.7% test positivity rate based on Sept. 11 data. Unlike the aforementioned dashboards, it doesn’t provide a seven- or 14-day rolling average.

Why is this important?

The Johns Hopkins University Coronavirus Resource Center testing tracker states: On May 12, 2020, the World Health Organization (WHO) advised governments that before reopening, rates of positivity in testing (ie, out of all tests conducted, how many came back positive for COVID-19) of [sic] should remain at 5% or lower for at least 14 days.

San Mateo County would appear to have a serious COVID problem. Based on testing results, the level of infection is not only higher than our neighbors, but also higher than the state as a whole. 

Irvin Dawid

Burlingame

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(4) comments

Terence Y

Mr. Dawid, thank you for the statistics. At least SM doesn’t have idiot BLM and Antifa goons holding super-spreader events, else we’d be worse off. But to paraphrase one of Crooked Hillary's quotes after she was instrumental in letting Americans be killed at Benghazi, "What difference, at this point, does it make?" Let Governor Grue-som make his arbitrary rules to keep CA under house arrest. I welcome the reduction in state revenues.

Tommy Tee

The stupid spreaders were busy in Nevada attending Trumps' rally.

JustMike650

https://www.smdailyjournal.com/news/local/san-mateo-county-makes-covid-progress/article_c3c045f4-f893-11ea-b3da-6bda52494dff.html

Irvin D.

Mike, in reading the cover story in today's paper, please note that while it would appear to send a different, in fact, opposite message than what I wrote, the two pieces report on different metrics.

Sierra Lopez reports that according to County Manager Mike Callagy, "the county has maintained a week of criteria necessary for being moved to the red [or] less restrictive tier," meaning the case incidence has been fewer than seven new daily cases per 100k residents.

Interestingly, the Harvard U./Brown U. "COVID Risk Levels Dashboard" shows the case incidence rate, as of Tuesday, at 9.2 per 100k, based on a 7-day moving average. The state rate is 9.1 per 100k.

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