BEIJING (AP) -- The dengue virus has killed six people and infected more than 20,000 in southern China's worst outbreak of the mosquito-transmitted disease in about two decades.
Authorities in worst-affected Guangdong province attribute the severity of this year's outbreak to exceptionally hot and wet weather, plus increasing travel by residents to dengue-affected regions in Southeast Asia.
The Guangdong health agency says on its website that 21,527 people had been infected by Sunday, with more than 1,000 new cases per day. Other provinces also reported a few dozen cases.
The official Xinhua News Agency says the Guangdong capital of Guangzhou has dispatched teams to spray insecticide to kill the mosquitoes that spread the virus.
Dengue causes flu-like symptoms and rashes. It usually is not fatal, but can be especially severe for younger victims.