RELATED: Coronavirus: Tracking Central California COVID-19 cases
Hospital officials say none of the healthcare employees have needed hospitalization.
Three of the 21 employees have fully recovered, tested negative for the virus and have returned to work.
As of Friday, Tulare County has reported 382 cases of the virus, but it's not clear if the cases from Kaweah Delta are part of that amount.
For more news coverage on the coronavirus and COVID-19 go to ABC30.com/coronavirus