New York Times (Nov. 2) – [W]hen the amount of testing in a community increases or decreases, the rate can fluctuate. Selectively choosing who does and doesn’t get tested can also affect the rate. “When a measure becomes a target, it ceases to be a good measure,” said Rebecca Lee Smith, an associate professor of epidemiology at the University of Illinois who helps run the university’s Covid-19 control strategy. “Once you have put out a single measure as a target, people will figure out how to game that measure.”
https://www.nytimes.com/2020/11/02/nyregion/new-york-coronavirus-orange-county.html
https://www.nytimes.com/2020/11/02/nyregion/new-york-coronavirus-orange-county.html