The interdepartmental Pest Control Steering Committee (PCSC) held its 23rd meeting today (March 23) to review the latest situation of mosquito proliferation and the anti-mosquito work of departments, as well as discussing work on rodent prevention and the effect of the Anti-rodent Charter (Charter).
 
Mosquito control
 
     The representative of the Food and Environmental Hygiene Department (FEHD) reported to the PCSC its work on mosquito control over the past year and the progress of this year's initiatives. The overall situation of mosquito infestation was generally under control. It is worth noting that the FEHD temporarily extended its intensified mosquito control work, which was originally activated when the area gravidtrap index (AGI) reaches 20 per cent (Level 3), to cover areas with the AGI fall between 10 and 20 per cent (Level 2), until further notice. In addition, the survey area of gravidtrap for Aedes albopictus in the Tsing Yi North has been extended to cover the Tsing Yi Nature Trails. The FEHD will continue to leverage technologies, including robotic dogs and drones, to support its mosquito prevention and control work.
      
     According to the mosquito surveillance data, the overall trend of the gravidtrap index for Aedes albopictus has remained similar to past years. The indices for January and February 2026 remained low, consistent with the same period in past years. As the warm and humid weather of spring approaches, the gravidtrap index is anticipated to rise along with warmer weather and the rainy season as in previous years. The FEHD and relevant departments will continue to strengthen mosquito prevention and control work, including eliminating mosquito breeding grounds, applying larvicides, conducting fogging operations to eliminate adult mosquitoes, and installing mosquito trapping devices at suitable locations. The FEHD will also continue to conduct joint on-site inspections with relevant departments, and provide them with professional advice and technical guidance.
      
     Representatives from the Centre for Health Protection of the Department of Health (DH) presented the latest risk assessment of mosquito-borne diseases. As the hot and rainy weather approaches, coupled with the increase in inbound and outbound passenger traffic during the upcoming long holidays, the overall risk of importing and locally transmitting mosquito-borne diseases such as dengue fever and chikungunya fever is expected to increase. To prevent mosquito-borne diseases, members of the public are advised to wear loose, light-coloured long-sleeved tops and trousers, and apply DEET-containing insect repellent on exposed parts of the body and clothing. Travellers returning from areas affected by mosquito-borne diseases should apply insect repellent for 14 days upon arrival in Hong Kong. The departments will closely monitor the situation of mosquito infestation as reflected by the surveillance indices, and continue to update the list of mosquito infestation hotspots to facilitate adjustments and deployment based on the actual situation, ensuring prompt and effective mosquito prevention and control work. The FEHD will continue to convene meetings of the inter-departmental task forces on anti-mosquito work in the district to co-ordinate frontline departments and stakeholders for mosquito control, including eliminating potential mosquito breeding places before the rainy season, as well as conducting fogging operations in a timely and concerted manner until the end of the rainy season, to mitigate the risk of mosquito-borne disease transmission. In addition, the FEHD, in collaboration with the Education Bureau (EDB), will progressively install new mosquito trapping devices (MTDs) in secondary schools, primary schools and special schools registered with the EDB, to further strengthen mosquito prevention and control on campuses. Representatives from the EDB also shared that schools generally welcome the installation of the MTDs on their campuses.

Rodent control
 
     ​Since 2024, the FEHD has fully adopted thermal imaging cameras with artificial intelligence technology to monitor rodent activity and enumerate Rodent Absence Rate, to more accurately reflect the situation of rodent infestation. At the meeting, the FEHD presented the mechanism and considerations for installing thermal imaging cameras at the selected locations during each round of Rodent Activity Surveys (RAS) to capture infestation conditions, and explained how the FEHD utilises data on rodent infestations and locations derived from the new technology to collaborate with other departments, local businesses and residents in implementing more targeted measures to enhance the efficiency of rodent control. Representatives from the Housing Department (HD) and the Leisure and Cultural Services Department (LCSD) also reported on how they have deployed data-driven strategies to prevent and control rodent infestations and the results achieved, following the extension of RAS to include public rental housing estates, parks and recreational facilities under their respective purview.
 
     The FEHD launched the Charter in December 2024, inviting property management companies, owners' corporations and residents' organisations of private residential premises to participate and work together to create rodent-free environments. As at February this year, more than 770 organisations and groups have signed the Charter, covering about 720 000 households. Since the launch of the Charter, the FEHD has actively collaborated with stakeholders, including working with the Property Management Services Authority, and encouraging more estate property management companies and owners' corporations to sign the Charter through the HD and the Hong Kong Housing Society. In January this year, the FEHD launched the Anti-rodent Partner Awards 2026 to commend premises that have performed excellently in rodent control work. Through this commendation, the FEHD aims to continue to raise community awareness of rodent prevention and control, strengthen collaboration, and jointly create a clean and hygienic living environment. The FEHD will further expand the coverage of the Charter to include property management companies of shopping centres, enhancing the sustained benefits of the Charter and strengthening the overall rodent control effectiveness in the community.
 
     The Environment and Ecology Bureau will continue to co-ordinate the "Cross-sectoral Territory-wide Anti-rodent Action", implementing all-rounded rodent control measures with cross-sector, multi-disciplinary and community involvement.
      
     The meeting today was chaired by the Under Secretary for Environment and Ecology, Miss Diane Wong. Government bureaux, departments and organisations attending the meeting were the Agriculture, Fisheries and Conservation Department; the Architectural Services Department; the Buildings Department; the Civil Engineering and Development Department; the Development Bureau; the DH; the Drainage Services Department; the EDB; the Electrical and Mechanical Services Department; the Environmental Protection Department; the FEHD; the Government Property Agency; the Hospital Authority; the Home Affairs Department; the HD; the Highways Department; the Information Services Department; the Lands Department; the LCSD; the Social Welfare Department and the Water Supplies Department.

Ends/Monday, March 23, 2026
Issued at HKT 20:10

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