TAIPEI, Taiwan (AP) — An outbreak of the chikungunya virus in China has prompted authorities to take preventive measures from mosquito nets and clouds of disinfectant, threatening fines for people who fail to disperse standing water and even deploying drones to hunt down insect breeding grounds.

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.