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CSSEGISandData / COVID-19

Novel Coronavirus (COVID-19) Cases, provided by JHU CSSE
https://systems.jhu.edu/research/public-health/ncov/
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King County, Washington spike in cases on 6/9 seems bogus #4228

Open emclain opened 3 years ago

emclain commented 3 years ago

The data for "King,Washington" shows ~1000 cases on 6/9, 10x the typical case rate.

This spike is not reflected in the dashboards from the state: https://www.doh.wa.gov/Emergencies/COVID19/DataDashboard#dashboard or the county: https://kingcounty.gov/depts/health/covid-19/data/daily-summary.aspx

I'm not sure if this is related, but the NYT (which I think uses your data) reported that on 6/7, "Washington removed many cases in King County.": https://www.nytimes.com/interactive/2021/us/king-washington-covid-cases.html#methodology

CSSEGISandData commented 3 years ago

Hello,

We will be reaching out to the state for comment, but this matched the data reported at the state at the time (there were commensurate decreases in King County and increases in Unassigned the two days prior). The NYT collects and publishes US COVID-19 data on their own so their data should be viewed as independent.

Washington state is frequently revising their historical data so we are unable to compare our time series to theirs. Our data matches the totals as reported for the day to which they are assigned.

stucka commented 3 years ago

Worth noting: King County has been averaging a bit more than 100 cases per day; I see 1,230 cases on June 9, but MINUS 871 on June 7. I'm not finding a ready explanation.

emclain commented 3 years ago

It appears that on 6/7 and 6/8 there was an increase of Unassigned,Washington cases at the same time as the decrease in King,Washington cases, and then a decrease Unassigned/increase King on 6/9. No similar anomaly is found in the Washington state totals:

  | King | King diff | unassigned | unassigned diff | WA total | WA diff -- | -- | -- | -- | -- | -- | -- 6/4 | 110089 |   | 1529 |   | 439263 |   6/5 | 110220 | 131 | 1526 | -3 | 440057 | 794 6/6 | 110220 | 0 | 1526 | 0 | 440057 | 0 6/7 | 109349 | -871 | 2630 | 1104 | 440889 | 832 6/8 | 109458 | 109 | 2642 | 12 | 441591 | 702 6/9 | 110688 | 1230 | 1500 | -1142 | 442098 | 507 6/10 | 110799 | 111 | 1506 | 6 | 442815 | 717 6/11 | 110911 | 112 | 1508 | 2 | 443454 | 639 6/12 | 111022 | 111 | 1537 | 29 | 444166 | 712 6/13 | 111022 | 0 | 1537 | 0 | 444166 | 0