While millions of young people wait for enough vaccine to arrive in the country, there are still large numbers of people who are eligible today that haven't yet gotten a shot.

According to Commonwealth data, roughly 40 per cent of Australians in their 60s have not yet been vaccinated.

It's vital that as many people are vaccinated as possible, and for the Delta variant currently circulating in the country's largest states, a person needs two shots for the best protection.

On today's Coronacast, if people in their 60s are waiting for Pfizer, they might be waiting for a while.

Also on today's show:

* If Delta is more contagious, are masks less effective?