[Brian Griffin]

“7-Day Percent Positive of PCR-Tested Individuals
Numerator. The number of patients with an initial positive laboratory PCR test result for COVID-19 within the last 7 days. Denominator. The number of patients who had an initial PCR COVID-19 test within the last 7 days.”

https://health.mo.gov/living/healthcondiseases/communicable/novel-coronavirus/data/public-health/data-methodology-and-documentation.php

[mewzilla]

Doesn’t answer whether they count probables, repeat positives of the same patient, and whether or not the testing is accurate.