VICTORIA has designated part of Queensland an "Orange Zone" after a new community case of COVID-19.
It means anyone returning to the southern state from this area must self-isolate until they test negative to the virus.
Queenslands new positive COVID-19 case visited several locations in Brisbane and the Moreton Bay area while infectious.
Genomic testing has confirmed the case is linked to a hospital worker whose infection was announced on March 12.
A missing link who passed on the virus is likely out in the community, according to Queensland's chief health officer.
Anyone who has entered Victoria from the City of Brisbane and Moreton Bay Region since March 12 is required to immediately self-isolate, take a COVID-19 test within 72 hours, and stay isolated until they receive a negative result.
The Victorian government will be contacting everyone who has entered from these regions using data from travel permits.
Anyone who has visited exposure sites listing by the Queensland government must contact the Victorian Health Department on 1300 651 150 and follow the relevant advice issued by Queensland Health.
Queensland health authorities have confirmed they are tracking down close contacts of the infectious man, who will be required to isolate for 14 days.
People entering Victoria from an orange zone must apply for the specific permit. They cannot obtain that permit if they have COVID-19 symptoms.
On arrival orange zone permit holders must immediately isolate until they return a negative test result.
A list of testing locations is available on the Victorian government website.
Full details of exposure sites available on the Queensland government website.
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