MOUNT VERNON, Wash. (AP) — Officials say a Mount Vernon nursing home is experiencing an outbreak of COVID-19 among residents and employees. Skagit County confirmed Monday that so far 21 residents and employees at Mira Vista Care Center have tested positive for the coronavirus. The Skagit Valley Herald reports the first case was confirmed June 19, and others were confirmed with follow-up testing. Most cases there have been mild or asymptomatic. Polly Dubbel, communicable disease and environmental health manager with Skagit County Public Health, said because COVID-19 outbreaks in congregate living situations can be challenging to contain, it’s important that the public works together to slow the spread and help stop the virus from entering these vulnerable facilities.