[ Sign up for our Health IQ newsletter for the latest coronavirus updates ]Whitworth said there were no positive cases among health-care workers in the unit as of Saturday.“All precautions are being taken to reduce the risk of transmission among patients and HCWs on the unit including enhanced cleaning and symptom screening,” Whitworth added.Contact tracing has been conducted in connection to the outbreak to identify anyone who may be at risk, according to AHS.According to the AHS website, an outbreak was also declared at a Foothills Medical Centre mental health unit on Nov.