TGA Crackdown on Shonky Tests, page-26

I would suggest that having 3 negative tests over 3 days prior would be ideal.... if our test can pick up the virus within 3 days of infection then that is what should be the standard.. if its 5 days then you should present for 5 tests over 5 days all negative and good to fly... anything less leaves far too many gaps for the virus to sneak through.. and if the world gets back to international travel you only have to look at how many people fly each year to realise that if you do just one test.. its not enough..

Personally i would have no issue with the above (but only if it was a saliva test ) nasal swab 5 days in a row could be a bit hectic..