Southeast Asia and South Pacific island nations face a growing threat from malaria and dengue fever as climate change spreads mosquitoes that carry the diseases and climate-change refugees start to migrate.

A new report titled "The Sting of Climate Change", said recent data suggested that since the 1970s climate change had contributed to 150,000 more deaths every year from disease, with over half of the deaths in Asia.

"Projections of the impact of climate change on malaria and dengue are truly eye-opening," said the Lowy Institute report released in Sydney yesterday.