FUZHOU - A total of 16 dengue cases have been reported in East China's Jian Ou city of Fujian province as of Saturday, local authorities said on Sunday.

The patients were all from Dongfeng Township. Two people have recovered and left hospital, while the remaining are in a stable condition, said the city health bureau.

The bureau has ordered all people to stay alert while medical experts try to control the disease.

Dengue fever, a viral infection transmitted by mosquitoes, mostly hits tropical and sub-tropical regions. The symptoms include high fever, nausea, rashes, backache and headaches. The hemorrhagic variant, which causes severe internal bleeding as blood vessels collapse, is often fatal.