Chinese health officials are responding to an outbreak of a mosquito-borne disease that can cause severe joint pain. More than 7,000 cases of chikungunya have been reported in the Chinese province of Guangdong in recent weeks,

More than 7,000 people have been infected with Chikungunya virus, the BBC reports. Chinese authorities have said "local outbreaks" have resulted from "imported cases" of the virus in July, with Foshan city in the central Guangdong Province hit hardest.

Chinese authorities have taken measures this week to try to curb the spread of chikungunya, a virus that often causes fever and joint pain. Here’s what to know about it.