Now that fully vaxed arriving international students will not have quarantine in NSW it will be up to the Commonwealth to keep borders secure

So, hard can it be to check immunisation status at airport arrivals? Not hard at all, as long as officials are across different state and territory rules for people with a medical exemption. And as long as the dates on students’ vax certificates are legible and meet time-requirements. And as long as officials remember the Beijing version of Sinopharm (under 16 names) is ok but the Wuhan one isn’t.