The government advertising campaign should be aimed at the younger age group.
It is important to use those aged in their thirties and under as advocates to encourage older Australians to get vaccinated.
"Younger people are also the ones who can go to their parents and nudge our parents to go and vaccinate. By urging parents to have the jab they are in fact making it safer for their children and grand children.
The young make up a large proportion of people who are on social media every day, passing on information to older family friends and relatives
"And so potentially a campaign targeted at Australians in their thirties, people who are younger, may actually have a more positive response more broadly."