Several Monash suburbs have been placed on alert by the Department of Health after coronavirus fragments were found in wastewater.
The suburbs are Clayton, Clayton South, Glen Waverley, Mount Waverley, Mulgrave, Notting Hill and Wheelers Hill.
Anyone with even mild COVID-19 symptoms - such as a cough, runny nose, sneezing - is urged to get tested, especially people who live in or have visited these areas from 4 to 6 April.
Testing wastewater for coronavirus fragment is regularly undertaken by the State Government. A person who has been infected with COVID will shed virus fragments that are going to travel through the waste system to eventually end up in sewage treatment plants.
By analysing water samples from those plants authorities can detect whether the virus is spreading in a specific area.
A person who has had the virus can keep shedding fragments even after the infectious period is over.
More information: Department of Health/Coronavirus