Fragments of coronavirus have been detected in four south east Queensland sewage catchments as health authorities monitor other cases in NSW and Victoria. Queensland Acting chief health officer Dr Sonya Bennett announced on Tuesday traces of the virus were detected in the Gold Coast catchments of Pimpama, Coombabah and Merrimac. Additional fragments were found in a sewage catchment in Loganholme, south of Brisbane. No new cases were recorded overnight but Dr Bennett encouraged residents of the Gold Coast and neighbouring Logan to be alert for any symptoms. “While it’s possible that these detections relate to previous COVID-19 cases who can shed viral fragments for a couple of months after they are no longer infectious, it is concerning that there have been three detections on the Gold Coast over the same testing period,” Dr Bennett said. “If there is a case we are not yet aware of, it is critical we detect it through our testing mechanisms as quickly as possible to contain any potential spread.” No new cases were recorded in NSW and Victoria overnight.