Australia's worst diphtheria outbreak in decades has prompted a public warning to stay up to date with vaccinations as cases rise.
Hundreds of cases have been reported across three states and a territory, with a dip in vaccination rates blamed for the spread of the generally rare respiratory disease.
Authorities have urged people to check they and their families are up to date with their vaccinations.
"When vaccination rates fall, serious diseases, which we had largely eliminated, can make a comeback," Australian Medical Association President Danielle McMullen said.
"We are seeing that risk play out with diphtheria."
There were 226 recorded diphtheria cases in the Northern Territory, Queensland, South Australia and Western Australia on Wednesday, up from 223 on Tuesday.
