here are the issues:
- Inbound travellers are only thermally screened which is, at best, of notional value
- Anyone with colds/flu on inbound a/c - are supposedly to be checked by Quarrantine Officers prior to pax disembarking
- Notification of suffering pax to said Quarrantine Officers is arbitary and generally reliant on CC to determine (some are dilgent - some are not, [allegedly], one QF flight didn't bother to notify as the onboard Manager did not want a delay which would have meant missing aconnecting domestic flight home! Several pax later presented with symptoms.)
- Quarrantine Officers boarding a/c have no means of diagnosis - they can only 'guess risk' based on what the pax say
- Testing when a pax feels sick enough to go to a Doctor - which is usally a day or two later, (done with nasal & oral swabs onto viral xfer media) then takes 48 to 72 hours for initial results and high level of variance in test outcomes
- Primary antivirals (ie Tamiflu) only effective if administered within the first 48 hours of infection - other antivirals are secondary
So in a global environment rapid transmission by airline passengers is inevitable.
Interestingly though, discounting the cruise ship cases, almost half of the national total have occurred in Victoria - with a disproportionate number of these who reportedly travelled on QF94.
AT