Public Health Madison & Dane County

Read Data Snapshot

The data snapshot is released twice per month. You can find past issues on our data and dashboard page. The data below are from July 18 to July 31.

Key messages from today’s Data Snapshot

• Cases were stable during this 14-day period with an average of 223 cases per day. The number of people hospitalized with COVID in Dane County hospitals was stable with an average of 63 people hospitalized each day. Percent positivity during this 14-day period was 14.0% and an average of 1,588 PCR tests were conducted per day.
• Over the past four weeks, cases were stable among all age groups. Ages 30-39 currently have the highest case rate at 50.5 per 100,000 per day, and ages 23-29 have the highest percent positivity at 17.3%.
• The BA.5 Omicron subvariant is the dominant virus strain in the US, making up 85.5% of new cases. The BA.5 subvariant is also likely the dominant virus strain in Dane County and Wisconsin. A lineage of BA.4—BA.4.6—is slowly increasing in prevalence in the US, making up 4.1% of new cases (up from 3.6% last week and 2.9% the week before that).
• The percent of Dane County cases that are reinfections has increased over the past year, from 1-2% in fall of 2021 to currently at least 13%.