Confirmed COVID-19 cases. A person who tests positive to a validated SARS-CoV-2 test.. High-risk suspected COVID-19 (high-risk SCOVID) cases. A person in quarantine for any reason, including being a close contact of a confirmed case of COVID-19, or a returned traveller from overseas or an interstate area with outbreaks (as defined by public health in the previous 14 days) with or without a ....