GUANGZHOU, Sept. 21 (Xinhua) -- A total of 791 dengue cases, 85.7 percent less than the same period last year, have been reported in 15 cities across south China's Guangdong Province so far this year, health authorities said Monday.

There have been no deaths reported yet, and 77 people caught dengue outside of the province. Chaozhou City has seen the highest number of cases, at 691, said the province's health and family planning commission.

A spokesperson from the commission said they were only seeing around 30 new cases a day, but risks remain as this is high holiday season.

Dengue is a mosquito-borne, potentially fatal disease that mainly affects people in tropical and subtropical regions, causing fever, nausea, as well as muscle and joint aches.

Guangdong reported the majority of China's 46,000 dengue cases last year, including more than 35,000 in the provincial capital Guangzhou.