Following the detection of three new imported cases of chikungunya fever, Hong Kong's Food and Environmental Hygiene Department (FEHD) conducted an anti-mosquito spray operation on Thursday in the hillside area opposite Lei Tung Estate, Ap Lei Chau.

The patients, who reside in Tsing Yi and Ap Lei Chau, had recently travelled to areas where chikungunya is prevalent, according to the Centre for Health Protection of the Department of Health. 

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Chikungunya fever is transmitted by Aedes mosquitoes and presents with fever, joint pain, and rash.

In coordination with the CHP, FEHD has strengthened mosquito control efforts, including fogging and larvicide application in high-risk areas. The public is advised to remove stagnant water and take protective measures against mosquito bites.

China Daily's Adam Lam took the photos on Thursday.