There are concerns as New Zealand's vaccination roll out continues, some Australians may take advantage of the travel bubble and jump the queue to get vaccinated on Aotearoa's supply.
The chief executive officer of Zoom Health David Taylor told The AM Show he suspects when New Zealand widens it's vaccination criteria to the general public, people will travel from Australia to get faster access.
"The 'worried, well' - people with money - will jump across and get the vaccine here… once you start widening [the criteria] older Aussies will be looking to come across."
He doesn't expect it will be large scale, but says it will highlight indisputable flaws in our healthcare.
"It points to the fact that if you have money, you have better access to healthcare. It lays bare the inadequacies of health care in New Zealand."
The Government has been criticised by the Opposition for not rolling out vaccines fast enough - especially since New Zealand's has slipped to number two in global rankings for COVID-19 responses.
Thanks to a speedy rollout of the Pfizer-BioNTech vaccine, Singapore is now ranked number 1 in the world for its COVID-19 response in the Bloomberg COVID Resilience Index.
For the first time since the ranking began, New Zealand is in second place.
National's COVID-19 response spokesperson Chris Bishop says the Government's slow vaccine rollout has caused New Zealand to slip behind Singapore when they should be on equal footing given the similar populations and circumstances.
"The world is vaccinating way faster than we are, which will give them options for reconnecting to the rest of the world that New Zealand won't be part of unless we hurry up."
Associate Health Minister Dr Ayesha Verrall says number 2 is nothing to be sniffed at, and called for New Zealanders to be patient.
"It's important to remember that we will have enough vaccines for everyone. To achieve our aim of having everyone vaccinated by the end of the year, we do need New Zealanders to work with us, and in some cases to be patient."