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In page COVID-19 pandemic in Victoria:

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On 19 September, at 11:59pm Greater Geelong, Surf Coast Shire and Mitchell Shire went back into lockdown, their eighth, for at least 7 days.[10] This followed both Greater Geelong and Mitchell reporting cases and Surf Coast showing positive waste water detections with no confirmed source.[citation needed] Greater Geelong and the Surf Coast exited lockdown by 27 September as scheduled, but the Mitchell Shire lockdown was extended with no set end date.[11]