I still have not seen a definitive, medical, statistically based...

I still have not seen a definitive, medical, statistically
based justification for pursuing such a policy.

Similarly for vaccine certificates or passports, or whatever.

Does vaccination stop contagion?
Its that simple.

Where is the evidence that supports these intrusive, and
divisive policies.

As for Qantas, I haven't flown with them for years and
this simply confirms my opinion of those running the
business.