FEHD Releases September Gravidtrap and Density Indexes for Aedes Albopictus, Monitoring Mosquito Infestation Across 40 Areas.

FEHD releases first batch of gravidtrap indexes for Aedes albopictus in September

The Food and Environmental Hygiene Department (FEHD) today (September 21) released the first batch of gravidtrap indexes and density indexes for Aedes albopictus in September, covering 40 survey areas, as follows:

District	Survey Area	September 2026
		First Phase Gravidtrap Index	First Phase Density Index
Eastern	Shau Kei Wan and Sai Wan Ho	18.3%	1.3
Kowloon City	Kowloon Tong	4.9%	1.0
Sham Shui Po	Sham Shui Po and Shek Kip Mei	3.3%	1.0
North	Fanling South	4.5%	1.0
Sai Kung	Sai Kung Town	3.8%	1.0
Kwai Tsing	Kwai Chung West	2.2%	1.0
	Lai King	3.7%	1.0
Yuen Long	Hung Shui Kiu and Ping Shan	0.0%	N/A
	Yuen Long Town	6.6%	1.0

District	Survey Area	September 2026
		Area Gravidtrap Index	Area Density Index
Central and Western	Sheung Wan and Sai Ying Pun	28.3%	1.7
Southern	Aberdeen and Ap Lei Chau	17.0%	1.4
	Pok Fu Lam	5.2%	1.5
Wan Chai	Happy Valley and Tai Hang	2.6%	1.0
	Tin Hau and Causeway Bay	2.0%	1.0
	Wan Chai	2.8%	1.0
Islands	Cheung Chau	0.9%	1.0
Kowloon City	Kai Tak	4.3%	1.0
	Kowloon City	3.7%	2.0
Kwun Tong	Kwun Tong Central	1.2%	1.0
Mong Kok	Mong Kok and Tai Kok Tsui	0.9%	1.0
Sham Shui Po	Cheung Sha Wan	17.4%	1.4
Wong Tai Sin	Ngau Chi Wan and San Po Kong	3.7%	1.3
	Wong Tai Sin West	1.9%	1.0
Yau Tsim	Tsim Sha Tsui and Yau Ma Tei	1.6%	1.0
	Tsim Sha Tsui East and King's Park	8.7%	1.3
North	Sheung Shui	12.8%	1.0
Sai Kung	Tseung Kwan O North	5.7%	1.2
Sha Tin	Ma On Shan	10.2%	1.2
	Sha Tin Town Centre and Fo Tan	4.7%	1.4
	Tai Wai	0.8%	1.0
Tai Po	Tai Po East	5.9%	1.0
	Tai Po West	6.3%	1.0
Kwai Tsing	Kwai Chung East	0.0%	N/A
	Tsing Yi South	6.0%	1.3
Tsuen Wan	Ma Wan and Sham Tseng	4.7%	1.0
	Tsuen Wan Town	5.9%	1.3
Tuen Mun	So Kwun Wat	5.5%	1.2
	Tuen Mun North	2.4%	1.0
	Tuen Mun West	4.2%	1.0
Yuen Long	Tin Shui Wai	8.0%	1.0

The FEHD continues to carry out a series of mosquito prevention and elimination measures, including:

• interdepartmental collaboration: convening special meetings of the interdepartmental task forces on anti-mosquito work to co-ordinate relevant departments and stakeholders (such as construction site contractors, schools and property management companies) in strengthening mosquito control work at venues;
• precise risk assessments: carrying out intensive and targeted mosquito control work at locations with more serious mosquito infestations, including stepping up inspections, eliminating mosquito breeding and potential breeding grounds, applying larvicides, conducting fogging operations to eradicate adult mosquitoes, and placing mosquito trapping devices at appropriate locations;
• promotion and education: organising exhibitions with relevant departments and stakeholders, and distributing leaflets and posters to enhance public awareness of mosquito control and prevention; and
• rapid alert mechanism: notifying residential estates that have subscribed to the gravidtrap Rapid Alert System, and advising property management companies and residents to stay vigilant and work together in taking mosquito prevention and elimination measures.

During the follow-up actions and following the discovery of stagnant water or stagnant water containers at three parks, three public housing estates, four private housing estates and three private premises in Central and Western District, Southern District, Sham Shui Po District and Sha Tin District, the FEHD has issued a total of 14 statutory notices to the responsible persons-in-charge, requiring the clearance of such items within a specified timeframe. Meanwhile, the FEHD has initiated a prosecution against a relevant construction site contractor following the discovery of mosquito breeding at a construction site in Central and Western District.

Public participation is crucial to the effective control of mosquito problems. The FEHD appeals to members of the public to continue to work together in strengthening personal mosquito control measures, including:

• tidying up their premises and checking for any accumulation of water inside the premises;
• removing all unnecessary water collections and eliminating the sources;
• checking household items (those placed in outdoor and open areas in particular), such as refuse containers, vases, air conditioner drip trays, and laundry racks to prevent stagnant water;
• changing water in flower vases and scrubbing their inner surfaces thoroughly, and removing water in saucers under potted plants at least once a week;
• properly covering all containers that hold water to prevent mosquitoes from accessing the water;
• properly disposing of articles that can contain water, such as disposable meal boxes and empty cans; and
• scrubbing drains and surface sewers with alkaline detergent at least once a week to remove any mosquito eggs.

Starting in August 2025, following the completion of the surveillance of individual survey areas, and once the latest gravidtrap index and the density index are available, the FEHD has been disseminating relevant information through press releases, its website and social media. It aims to allow members of the public to quickly grasp the mosquito infestation situation and strengthen mosquito control efforts, thereby reducing the risk of chikungunya fever (CF) transmission.

Following recommendations from the World Health Organization and taking into account the local situation in Hong Kong, the FEHD sets up gravidtraps in districts where mosquito-borne diseases have been recorded in the past, as well as in densely populated places such as housing estates, hospitals and schools to monitor the breeding and distribution of Aedes albopictus mosquitoes, which can transmit CF and dengue fever. At present, the FEHD has set up gravidtraps in 62 survey areas of the community, with a surveillance period of two weeks. During the surveillance period, the FEHD will collect the gravidtraps once a week. After the first week of surveillance, the FEHD will immediately examine the glue boards inside the retrieved gravidtraps for the presence of adult Aedine mosquitoes to compile the Gravidtrap Index (First Phase) and Density Index (First Phase). At the end of the second week of surveillance, the FEHD will instantly check the glue boards for the presence of adult Aedine mosquitoes. Data from the two weeks of surveillance will be combined to obtain the Area Gravidtrap Index and the Area Density Index. The Gravidtrap and Density indexes for Aedes albopictus in different survey areas, as well as information on mosquito prevention and control measures, are available on the department's webpage (www.fehd.gov.hk/english/pestcontrol/dengue_fever/Dengue_Fever_Gravidtrap_Index_Update.html#).

FEHD releases first batch of gravidtrap indexes for Aedes albopictus in September Source: HKSAR Government Press Releases

FEHD releases first batch of gravidtrap indexes for Aedes albopictus in September Source: HKSAR Government Press Releases

FEHD releases first batch of gravidtrap indexes for Aedes albopictus in September Source: HKSAR Government Press Releases

FEHD releases first batch of gravidtrap indexes for Aedes albopictus in September Source: HKSAR Government Press Releases

FEHD releases first batch of gravidtrap indexes for Aedes albopictus in September Source: HKSAR Government Press Releases

"Salute to the National Flag" Hong Kong and Macao Youth Flag-Raising Teams' Beijing Visit Delegation received by state leader

The "Salute to the National Flag" Hong Kong and Macao Youth Flag-Raising Teams' Beijing Visit Delegation, led by the Chief Secretary for Administration, Mr Chan Kwok-ki, was received by Member of the Standing Committee of the Political Bureau of the CPC Central Committee and Vice Premier of the State Council, Mr Ding Xuexiang, at the Great Hall of the People today (September 21).

The Secretary for Education, Dr Choi Yuk-lin, several guests, primary and secondary students and teachers and post-secondary students from Hong Kong and Macao, as well as representatives from the Association of Hong Kong Flag-guards and the Hong Kong Army Cadets Association, also attended the meeting.

Mr Chan expressed deep gratitude to Vice Premier Ding for personally guiding the Hong Kong and Macao youth and even more so to the nation for providing this valuable opportunity for students to take part in the solemn flagraising ceremony at Tiananmen Square and experience the historical culture and development achievements of the capital. He said that this was a rare and profound patriotic education experience. During the solemn flagraising ceremony, students felt the dignity of the national flag and anthem up close, deepening their understanding of the symbolic meaning of the flag, as well as national situation and development. Through a rich itinerary of visits, the students also gained a genuine appreciation of the challenges and accomplishments of the nation's journey from history to rejuvenation, further strengthening their national identity, the sense of national pride, affection for and sense of belonging to the country.

Mr Chan emphasised that the trip is of great significance for promoting patriotic education in Hong Kong's primary and secondary schools. In addition to textbook learning, bringing students into the sites of national history and culture allows them to experience emotions firsthand and deepen their understanding through real stories, which greatly contributes to patriotic education. The delegation's itinerary organically integrated national flag education, history education, cultural education and national development education, making patriotism more concrete, vivid and powerful in the hearts of students, guiding them to consciously safeguard national sovereignty, security and development interests, and aspiring to become a new generation that loves the country and Hong Kong and is willing to take responsibility.

Source: AI-found images