From the Johnson County, Missouri Emergency Management Agency:

JOCOMO Emergency Operations
As of 3:00 pm today [March 19, 2020], 87 individuals have been tested for COVID-19 in Johnson County, Missouri. We still have zero confirmed cases in our county and are awaiting results on several of those tested. We will do our best to provide daily recaps to keep the public updated.

“…and are awaiting results on several of those tested…”

From the U.S. Census, for Johnson County, Missouri:

Population estimates, July 1, 2018, (V2018) 53,652

87 tests. That’s quite a perspective on the numbers.

We’re all flying blind here.