Gumbaynggirr and Bundjalung country music icon Troy Cassar-Daley is urging First Nations people to get vaccinated before winter, as flu, COVID-19 and RSV cases rise across Australia.

The campaign, run by the Australian Government's Department of Health, Disability and Ageing, encourages First Nations Australians aged 50 and over to speak with their doctor or health worker about which winter vaccines are right for them.

It follows the highest number of flu cases recorded in the past five years, with health officials warning winter illnesses can have serious impacts on older people and those with underlying health conditions.

Flu, COVID-19 and RSV can lead to severe illness, hospitalisation, long recovery periods and, in some cases, death.

Vaccination remains one of the most effective ways to reduce the risk of catching these viruses and can lessen symptoms if people do become unwell.

Mr Cassar-Daley said looking after his health helped him keep showing up for family, community and his work.

"I spend so much time on the road and meeting people at gigs, and I can't afford to get sick when I'm touring," Mr Cassar-Daley said.

"If I go down, everything stops.

"So for me, getting vaccinated is just part of staying strong and being able to keep doing the things that I love."

The campaign message - Get ready for winter. Get vaccinated - urges people not to wait until winter is at its peak before seeking protection.

Mr Cassar-Daley said being up to date with recommended vaccinations was an important step people could take before the colder months.

"Winter nasties like the flu and COVID-19 are always changing, which is why vaccines are updated to keep fighting them," Mr Cassar-Daley said.

"Staying up to date with your vaccinations, especially if you're a bit older like me, is one of the best ways we can all remain well and stay ahead of those winter nasties!

"It's easy to put these things off, so get in early and have a yarn with your doctor or health worker, and make a plan to get vaccinated now."

Influenza vaccinations are free and recommended for First Nations people aged six months and over.

COVID-19 vaccinations are free for all First Nations people and recommended for people aged 65 and over.

From 15 May, RSV vaccinations are free for First Nations people aged 60 and over.

People are encouraged to speak with their doctor or health worker about which vaccinations are right for them.