FEHD Releases July Gravidtrap and Density Indexes for Aedes albopictus Across 12 Survey Areas

2026-07-14 19:29 Last Updated At：07-16 15:09

FEHD releases second batch of gravidtrap indexes for Aedes albopictus in July

The Food and Environmental Hygiene Department (FEHD) today (July 14) released the second batch of gravidtrap indexes and density indexes for Aedes albopictus in July, covering 12 survey areas, as follows:

District

Survey Area

First Phase Gravidtrap Index

First Phase Density Index

Southern

Pok Fu Lam

6.9%

1.0

Kowloon City

5.7%

1.0

Mong Kok

Mong Kok and Tai Kok Tsui

0.0%

N/A

Sham Shui Po

Sham Shui Po and Shek Kip Mei

9.7%

1.5

Wong Tai Sin

Wong Tai Sin West

3.8%

1.0

North

Sheung Shui

6.6%

1.0

Sai Kung

Tseung Kwan O North

9.1%

1.0

Tai Po

Tai Po West

10.3%

1.0

Kwai Tsing

Lai King

9.6%

1.0

Tsing Yi South

5.3%

1.0

Tuen Mun

Tuen Mun North

4.7%

1.0

District

Survey Area

July 2026

Area Gravidtrap Index

Area Density Index

Wan Chai

Happy Valley and Tai Hang

5.1%

1.0

The FEHD continues to carry out a series of measures, including:

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 venues' mosquito control work;

conducting risk assessments to identify locations with more serious mosquito infestation to carry out intensive and targeted mosquito control work, 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;

organising exhibitions with the relevant departments and stakeholders, and distributing leaflets and posters; and

notifying residential estates that have subscribed to the gravidtrap Rapid Alert System, 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 at a private housing estate in Tai Po District, the FEHD has issued a statutory notice to the responsible person-in-charge, requiring the clearance of stagnant water within a specified timeframe.

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:

tidy up their premises and check for any accumulation of water inside the premises;

remove all unnecessary water collections and eliminate the sources;

check 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;

change water in flower vases and scrub their inner surfaces thoroughly, and remove water in saucers under potted plants at least once a week;

properly cover all containers that hold water to prevent mosquitoes from accessing the water;

properly dispose of articles that can contain water, such as disposable meal boxes and empty cans; and

scrub 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/englsh/pestcontrol/dengue_fever/Dengue_Fever_Gravidtrap_Index_Update.html#).

CFS Warns Against Consuming Contaminated French Pepper & Feta Spread Due to Listeria Risk

CFS urges public not to consume batch of imported spread product suspected to be contaminated with Listeria monocytogenes

The Centre for Food Safety (CFS) of the Food and Environmental Hygiene Department today (August 18) urged the public not to consume a batch of spread product imported from France due to possible contamination with Listeria monocytogenes. The trade should stop using or selling the affected batch of the product immediately if they possess it.

Product details are as follows:

Product name: Ktipiti Extra Red Pepper & Feta Cheese Spread

Brand: L'atelier Blini

Place of origin: France

Net weight: 175 grams

Batch number: 12262661

Use-by date: August 30, 2026

Importer: City Super Limited

"The CFS, through its Food Incident Surveillance System, noted a notification from the Rappel Conso of France that the above-mentioned product is being recalled as it might be contaminated with Listeria monocytogenes due to suspected issue with the cold chain. Upon learning of the incident, the CFS immediately contacted local importers to follow up. A preliminary investigation found that the above-mentioned importer had imported into Hong Kong the affected batch of the product concerned," a spokesman for the CFS said.

As a precautionary measure, the importer concerned has stopped sales and removed from shelves the affected batch of the product and has initiated a recall according to the CFS's instructions. Members of the public may call the importer's hotline at 2736 3866 during office hours for enquiries about the recall.

"Listeria monocytogenes can be easily destroyed by cooking but can survive and multiply at refrigerator temperatures. Most healthy individuals do not develop symptoms or only have mild symptoms such as fever, muscle pain, headache, nausea, vomiting or diarrhoea when infected. However, severe complications such as septicaemia, meningitis or even death may occur in newborns, the elderly and those with a weaker immune system. Although infected pregnant women may just experience mild symptoms generally, the infection of Listeria monocytogenes may cause miscarriage, infant death, preterm birth, or severe infection in newborns," the spokesman added.

"In order to reduce the risk of listeriosis, susceptible populations such as pregnant women should consume freshly prepared hot food where possible, reheat chilled food until it is hot all the way through, and avoid high-risk foods, including ready-to-eat food such as cold cuts, cold smoked seafood, soft cheeses, salads, etc, or cook them thoroughly before consumption, even if they are presented as part of a dish."

The spokesman advised members of the public to stop consuming the affected batch of the product and seek medical treatment if they feel unwell after consuming the product concerned.

The CFS has contacted the French authority over the incident and will continue to follow up on the incident and take appropriate action to safeguard food safety and public health. The investigation is ongoing.

FEHD Releases July Gravidtrap and Density Indexes for Aedes albopictus Across 12 Survey Areas

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