Hinshaw pleads with Albertans to take COVID-19 seriously, ‘concerned by continued rise in active cases’ “Contact tracing is ongoing and out of an abundance of caution, all patients on the unit identified as potentially exposed have been offered testing and swabbed,” AHS said. “No patient cases have been identified.”[ Sign up for our Health IQ newsletter for the latest coronavirus updates ]AHS said to reduce further transmission, it has deep-cleaned the unit, closed a staff break room and enhanced screening and surveillance for all health-care workers and patients.“While we appreciate it may be difficult for some, visitors to this unit are limited to only end-of-life situations until further notice,” AHS said.After review by Infection.