The Centre for Health Protection (CHP) announced three new imported chikungunya cases on Wednesday, urging the public to remain vigilant against mosquito-borne diseases.

One case involves a 79-year-old woman from Southern District who traveled to Foshan, Guangdong province, from July 1-31. She developed fever and joint pain on Tuesday and was admitted to Queen Mary Hospital on Wednesday. Laboratory tests confirmed a chikungunya infection.

The other cases involve a 55-year-old man with underlying conditions and his 10-year-old son from Kwai Tsing district. They visited Bangladesh from July 12 to Sunday. The man became ill on July 27, while the boy developed symptoms on Friday. Both tested positive for chikungunya after seeking treatment in Hong Kong. Their two household contacts remain asymptomatic and under medical surveillance.

The CHP has alerted health authorities in Guangdong and Bangladesh and continues epidemiological investigations. Residents are reminded to eliminate mosquito-breeding sites and take protective measures, especially when traveling. Avoiding mosquito bites remains the key to preventing chikungunya, officials said.

Hong Kong reported its first case on Saturday, involving a 12-year-old boy who developed a fever, rash and joint pain after traveling to Foshan in July.