The Shell service station at Hay - which was visited by infected travellers on Saturday, July 10 - was initially listed as a casual contact venue.

However, health advice changed and it was later upgraded to be a close contact venue.

NSW Health defines a casual contact as someone who has been near an infectious person with COVID-19, but is at a lower risk of contracting the virus than a close contact.

A close contact is someone who has been close to a person with COVID-19 and might have contracted it themselves.

IN OTHER NEWS:

People will know they have come into contact with an infected person if they receive a call or text from NSW Health notifying them so, or if they visited an exposure site at the same time as someone with the virus.

These venues are listed online by NSW Health.

People deemed to be a casual contact must get a test and self-isolate until they receive a negative result.

Close contacts must also get a test and isolate, but are required to stay in home isolation, or another suitable place, for the 14 days since they were exposed.

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