As thousands of teenagers take part in Schoolies Week celebrations, doctors are warning young people about a rapid spread of chlamydia.

Researchers say Queensland has the highest number of chlamydia cases in the country.

They say the infection can lead to infertility but women often do not realise they have it until they try to have children.

Health professionals from around the world are meeting in Brisbane today to look at ways to prevent the disease.

The Queensland University of Technology's Dr Willa Huston says the rate of chlamydia in Queensland is growing rapidly.

"It's really very worrying. It has doubled over the past few years and over the last decade it's almost gone up fourfold," she said.

She says those aged between 15 and 24 have been most affected.