Hong Kong Reports Latest Dengue Fever and Chikungunya Cases, Urges Public to Remain Vigilant Against Mosquitoes.

Update on mosquito-borne diseases, dengue fever and chikungunya fever

The Centre for Health Protection (CHP) of the Department of Health (DH) today (December 12) reported the latest situation of dengue fever (DF) and chikungunya fever (CF).

Dengue fever

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From December 5 to yesterday (December 11), the CHP recorded one imported DF case. The patient had travelled to the Philippines during the incubation period.

As of yesterday, 56 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 four 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 and Vietnam have each recorded over 100 000 cases so far this year; Malaysia and Thailand have each recorded over 40 000 cases; and Singapore has also recorded over 3 500 cases.Meanwhile, according to the Guangdong Provincial Center for Disease Control and Prevention, Guangdong Province has recorded 3 558 locally infected cases so far this year. A total of 47 cases were recorded in a week between November 24 and 30, with the highest number of cases recorded in Chaozhou and Shantou.

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'swebsite.

Chikungunya fever

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As of 5pm today, no new cases of CF had been recorded. Hong Kong has recorded a total of 79 confirmed CF cases this year. Among them, 11 were local cases, and the rest were imported.

Given that some local cases of CF have visited the Tsing Yi Nature Trails or the surrounding area, the trails are currently closed until further notice. The CHP and the relevant government departments are conducting large-scale mosquito control and prevention efforts along the trails. The CHP reiterated its appeal for the public to avoid entering the area in order to reduce the risk of contracting CF and to avoid exposure to chemicals or interfering with the mosquito control operations.

The CHP continues to urge individuals who have recently hiked along the Tsing Yi Nature Trails to seek medical attention as soon as possible if they develop relevant symptoms and to call the enquiry hotline (Tel: 2125 2373). All doctors and hospitals in Hong Kong should closely monitor whether their patients present with compatible symptoms and arrange blood tests for those concerned. The CHP's Public Health Laboratory Services Branch will provide free testing services.

Specifically targeting confirmed cases who visited the Tsing Yi Nature Trails or the surrounding area, the Food and Environmental Hygiene Department (FEHD) has been continuously conducting intensive fogging operations to eliminate adult mosquitoes along the hiking trails. At suitable locations, large ultra-low volume foggers have been deployed, and a robot dog is being put on trial to enhance operational effectiveness. The FEHD has also set up new mosquito trapping devices, cleared discarded containers and garbage that could bring stagnant water, and applied larvicide oil or larvicides in areas with stagnant water that cannot be removed immediately. The FEHD has been collaborating with the Kwai Tsing District Office, the Lands Department and the Drainage Services Department to strengthen efforts in eliminating potential mosquito breeding sites along the Tsing Yi Nature Trails. Pamphlets have been distributed to hikers in the area, urging citizens to be vigilant against mosquito infestations and take personal protective measures. The FEHD also held meetings of the interdepartmental task forces on anti-mosquito work across districts, to discuss the latest developments regarding the situation and plan accordingly to co-ordinate relevant departments and stakeholders in strengthening mosquito prevention and control measures in areas under their purview.

Continuously strengthening prevention and control

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TheFEHDand 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 theCHPand theTravel Health Service, the latestTravel Health News,tips for using insect repellents, and the CHPFacebook Page,Instagram AccountandYouTube Channel, and also theMosquito Prevention and Control dedicated pageof the FEHD.

Source: AI-found images

Scam alert related to banks

The following is issued on behalf of the Hong Kong Monetary Authority:

The Hong Kong Monetary Authority (HKMA) wishes to alert members of the public to the press releases issued by the banks listed below relating to fraudulent websites, internet banking login screens, phishing emails or other scams, which have been reported to the HKMA. Hyperlinks to the press releases are available on the HKMA website.

Bank

Type of Scam

The Bank of East Asia, Limited

Fraudulent websites and internet banking login screens

Shanghai Commercial Bank Limited

Fraudulent websites and internet banking login screens

Chong Hing Bank Limited

Fraudulent websites and internet banking login screens

The HKMA wishes to remind the public that banks will not send SMS or emails with embedded hyperlinks which direct them to the banks' websites to carry out transactions. They will not ask customers for sensitive information, such as login passwords or one-time password, by phone, email or SMS (including via embedded hyperlinks).

Anyone who has provided his or her personal information, or who has conducted any financial transactions, through or in response to the scams concerned, should contact the relevant bank with the information provided in the corresponding press release, and report the matter to the Crime Wing Information Centre of the Hong Kong Police Force at 2860 5012.

Source: AI-found images