When we say 0 cases we usually mean 0 locally acquired cases. We’re worried about community transmission rather than international travellers.

If someone enters the country they’re quarantined in a hotel room for 14 days. If someone tests positive during that quarantine period we report it, but count it separately.

The title should be "no new locally-acquired cases", but there was actually one that came in after the cut-off time so it will be counted in tomorrow's numbers.

Locally acquired cases - indicates successful cessation of community transmission, which means you're back to the easier task of trying to detect and contain importation.