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,

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.

Chinese authorities are using nets, spraying insecticide and even deploying drones to fight the mosquito-borne chikungunya virus, which has infected thousands of people.