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

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.