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New Data Snapshot shows 1 in every 100 Dane County residents tested positive in just 2 weeks


Public Health of Madison and Dane County released their new Data Snapshot for November 3 – November 16 noting that during this time frame, more than one out of every 100 people in Dane County tested positive COVID-19. During this time, Dane County averaged 439 cases per day – an increase from last week’s 364.

Over the past two weeks, about 50 percent of new cases were outside of Dane County. Dane County has seen an overall rate of 112 new cases per 10,000, up from last week’s 93. According to the chart below, Black Earth, Marshall, Cross Plains, Stoughton, Waunakee, Sun Prairie and Fitchburg all have significantly higher rates than the County overall .

During this two-week time frame, 50 percent of new positive cases have been residents who live outside of Madison. This morning, Madison365 has updated our weekly map to showcase the increase in the number of cases in the county by census tract for the weeks of October 29 through November 19. We’ve also noted the top 15 Dane County tracts with the largest increases during this time.

From November 3 – November 16, there were 6,141 total cases with 14 percent part of a cluster and or facility investigation. PHMDC staff fully interviewed about half of those new cases, and found:

  • 33 percent of cases had household contact with another COVID-19 case
  • 30 percent of cases had non-household contact with another COVID-19 case
  • 23 percent of cases attended a gathering or party in the past two weeks
  • 13 percent of cases were from UW; 751 were UW students and 91 were college staff
  • 11 percent were associated with a cluster

Also provided from the available data, the following associated cases from unique clusters and facility investigations with non-clusters:

  • Workplaces, not public facing (151 total cases) – 41 unique clusters in workplaces that are not public-facing, with 118 associated cases, and 17 facility investigations with 33 more associated cases
  • Other Public facing workplaces (68 total cases) – 21 unique clusters in public-facing business/services with 47 associated cases and 14 facility investigations with 21 more associated cases
  • Bar/Restaurants (29 cases total) – 11 unique clusters with 23 associated and six facility investigations with nine more associated cases
  • Childcare facilities (74 cases total)  – 14 unique with 34 associated cases (16 children and 18 adults) and 34 facility investigations of non-clusters with 40 more associated cases (16 children and 34 adults)
  • Skilled Nursing (141 total cases) – 10 unique clusters with 135 associated cases and three facility investigation with six associated cases
  • Health Care facility (56 total cases) – 10 unique clusters with 51 associated cases and four facility investigations with five more associated cases
  • Schools (72 total cases)  – 11 unique clusters with 32 associated cases (11 children and 21 adults) and 34 facility investigations with 40 more associated cases (16 children and 24 adults)

For November 3 through November 16, the percentage of positive tests for the most recent 14 days has increased from last week’s update of 7.4 percent to 8.3 percent, keeping that metric yellow as the average number of cases per day for those 14 days rose to 439, keeping that metric in the red.

The percentage of cases contacted within 48 hours dropped to an all time low down of 15 percent from last week’s 16 percent. The proportion of new cases for those same two weeks who did not know where they had contracted COVID-19 increased to 31 percent. Both of these metrics remain in the red.

The snapshot included a look at hospitalizations and cases within our communities of color, specifically calling out the continuing disparity amongst our Hispanic/Latinx population as they continue to be overrepresented not only in cases, but in hospitalizations. During this time period, 111 people were hospitalized. The Hispanic/Latinx community make up six percent of the population in Dane County and for those two weeks, were eight percent of testing. However, Hispanic/Latinx residents were 18 percent of cases and 16 percent of hospitalizations for November 3 through November 16.  Black people were also overrepresented in both cases and in hospitalizations in Dane County. Though six percent of the population, Black people were only five percent of testing but 8 percent of all new cases during the same two week period and 13 percent of all  hospitalizations. Those who are American Indian/Alaskan, however, are 0.3 percent of the population and of testing, but 0.6 percent of cases and one percent in hospitalizations. Asian people in Dane County who are seven percent of the population, were also underrepresented in testing with only four percent of all tests, and were three percent of cases and two percent of hospitalizations.

Hospitalizations among age groups continue to increase in the County as two percent of cases from November 3 through November 19 were hospitalized. Those in their 80s so the largest percentage of cases in the hospitalized with 17 percent during this time period, with those in their 90s about 15 percent and 70 year olds were 10 percent.


Madison365 will have an update numbers for the state later this afternoon.