The Centre for Health Protection (CHP) of the Department of Health (DH) today (November 14) reported the latest situation of chikungunya fever (CF) and dengue fever (DF).

Chikungunya fever
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     As of 5pm today, one new imported CF case has been recorded.

     The case involves a 27-year-old female living in Tuen Mun District. Initial investigation revealed that she travelled to Cuba and Mexico between October 27 and November 10. She developed a fever, rash and joint pain from November 12 and attended the Accident and Emergency Department at Tuen Mun Hospital yesterday (November 13). She was admitted for treatment in a mosquito-free environment. Her blood sample tested positive for chikungunya virus upon laboratory testing. She is currently in stable condition. The patient's household contact, who accompanied her to Cuba and Mexico, is currently asymptomatic and under medical surveillance. 

     Since the patient stayed in Central America during her incubation period, the CHP considered that she was infected overseas. The case is classified as imported. The CHP's epidemiological investigation is ongoing, and it will report the case to the relevant health authorities.

     Hong Kong has recorded a total of 62 confirmed CF cases this year. Four of these cases were local, and the rest were imported.

     Regarding the 68-year-old female confirmed with CF yesterday (November 13), the CHP is conducting the genome analysis. The CHP urged the residents in the vicinity of Tung Hei Court in Shau Kei Wan, where the patient resides, to seek medical advice or contact the CHP immediately if they present with a fever, rash or joint pain since October 15. The CHP officers and the Eastern District Services & Community Care Teams have already reached out to the local residents, reminding them to be aware of relevant symptoms and maintain good environmental hygiene in their households.

     The CHP collaborated with the Eastern District Services & Community Care Teams to distribute leaflets on CF prevention and questionnaire surveys to about 3 000 households in the affected areas in the vicinity of Tung Hei Court to remind residents to monitor for relevant symptoms and maintain good environmental hygiene at home.

     This afternoon, the CHP also collaborated with the Eastern District Office to organise a health talk at the Kwan Kai Ming Memorial Chung Hok Elderly Centre of Women's Welfare Club Western District Hong Kong on G/F, Hing Hong House, Hing Tung Estate. The aim is to enhance public understanding of this mosquito-borne disease and encourage active participation in prevention efforts to protect both oneself and others.

     As of 5pm today, the CHP has conducted assessments for over 1 900 individuals residing or working in higher-risk district through the health consultation booth on 2/F, Hing Tung Shopping Centre, its inquiry hotline (2125 2373), questionnaire surveys and door-to-door visits at Tung Hei Court. Two individuals with mild symptoms have also been arranged to undergo blood tests. 

Dengue fever
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     From November 7 to yesterday (November 13), the CHP recorded one imported DF case. The patient had travelled to the Philippines during the incubation period.

     As of yesterday, 53 imported DF cases have been recorded so far this year. A total of 161 cases of DF were recorded in 2024, including 156 imported and five local cases.

     According to the World Health Organization (WHO), the global incidence of DF has markedly increased over the past two decades, posing a substantial public health challenge. In 2024, the WHO recorded over 14 million cases, which was a record number. From January to July 2025, over 4 million cases and over 3 000 DF-related deaths have been reported in 97 countries/territories.

     DF is prevalent in many neighbouring tourist destinations. Indonesia, India, Malaysia, Thailand and Vietnam have each recorded over 40 000 cases so far this year. Singapore has also recorded over 3 500 cases. Meanwhile, according to the Guangdong Provincial Center for Disease Control and Prevention, Guangdong Province has recorded 3 209 locally infected cases so far this year. A total of 196 cases were recorded in a week between October 27 and November 2, with the highest number of cases recorded in Chaozhou, Guangzhou, Shenzhen, Shantou and Foshan.

     Detailed information on the latest DF situation in Hong Kong, as well as neighbouring and overseas countries and areas, has been uploaded to the CHP's website.

Continuously strengthening prevention and control
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     The Food and Environmental Hygiene Department (FEHD) and relevant departments have comprehensively enhanced the mosquito control operations in Hong Kong since July this year, and this has continued. Among these, the FEHD has conducted vector investigations and targeted mosquito control operations against the imported and local cases. In light of the local case, the FEHD has immediately conducted follow-up actions, including:
 

• carrying out intensive fogging in scrubby areas within a 250-metre radius of the relevant locations to kill adult mosquitoes;
• carrying out inspections of the locations, removing stagnant water, applying insecticides and disposing of abandoned water containers every week with a view to preventing mosquito breeding; and
• enhancing public education efforts through organising health talks, setting up mobile education stations, and distributing publicity leaflets.

     The abovementioned measures will be continued. Furthermore, the Government will further enhance the mosquito control efforts in addition to the existing measures.

Preventive measures taken by the public
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     Members of the public should use DEET-containing insect repellents or other effective active ingredients properly to prevent mosquito bites, but the following precautions should be taken when using them:
 

• read the label instructions carefully first;
• apply right before entering an area with a risk of mosquito bites;
• apply on exposed skin and clothing;
• use DEET of up to 30 per cent for pregnant women and up to 10 per cent for children (For children who travel to countries or areas where mosquito-borne diseases are endemic or epidemic and where exposure is likely, those aged 2 months or above can use DEET-containing insect repellents with a DEET concentration of up to 30 per cent);
• apply sunscreen first, then insect repellent;
• reapply only when needed and follow the instructions; and
• in addition to DEET, there are other insect repellents available on the market containing different active ingredients, such as IR3535 and picaridin. When using any insect repellent, the public should follow the usage instructions and precautions on the product label.

     The FEHD also appeals to members of the public to continue to stay alert and work together to carry out mosquito prevention and control measures early, including inspecting their homes and surroundings to remove potential breeding grounds, changing water in vases and scrubbing their inner surfaces, removing water in saucers under potted plants at least once a week, and properly disposing of containers such as empty cans and lunch boxes. The FEHD also advises members of the public and property management agencies to keep drains free of blockage and level all defective ground surfaces to prevent the accumulation of water. They should also scrub all drains and surface sewers with an alkaline detergent at least once a week to remove any mosquito eggs.

     The public should call 1823 in case of mosquito problems, and may visit the following pages for more information: the CF page of the CHP and the Travel Health Service, the latest Travel Health News, tips for using insect repellents, and the CHP Facebook Page, Instagram Account and YouTube Channel, and also the Mosquito Prevention and Control dedicated page of the FEHD. 

Ends/Friday, November 14, 2025
Issued at HKT 19:50

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