https://www.mercurynews.com/2020/07/27/map-california-coronavirus-watch-list-adds-santa-cruz-county/

As had been expected, Santa Cruz County was added Sunday to the list of California counties being monitored because of concerns about coronavirus.

The county’s per-capita number of cases for the previous 14 days exceeded 100 per 100,000 residents on Wednesday. The following day it was notified that it would be added to the monitoring list if there was no improvement by Sunday.