Hong Kong – FEHD releases seventh batch of gravidtrap indexes for Aedes albopictus in October

The Food and Environmental Hygiene Department (FEHD) today (October 31) launched the seventh batch of gravidtrap indexes and density indexes for Aedes albopictus in October, covering 23 study locations, as follows:

The FEHD is worried about 2 study locations in Kowloon City District where the gravidtrap indexes have actually gone beyond 10 %, suggesting that the mosquito avoidance and control steps in close-by properties require to be enhanced. The FEHD has actually stepped up assessments and followed up with the individuals accountable for the management of pertinent properties. Mosquito breeding was discovered in neighboring property estates and building websites, together with harmed centers that resulted in build-up of water. As an outcome, the FEHD set up a prosecution and provided 7 statutory notifications to the appropriate home management business in accordance with Section 27 of the general public Health and Municipal Services Ordinance(Cap. 132), needing the business’s accountable individual to remove mosquito reproducing premises. 2 prosecutions and 5 statutory notifications were likewise provided to the professionals of the pertinent building websites. In addition, the FEHD has actually gone to schools, senior homes and child care centers in the surrounding location to supply mosquito avoidance and removal info. New mosquito traps were set up in the schools to improve mosquito control efforts. These assessments will continue. According to records, the FEHD has actually started an overall of 10 prosecutions versus specialists in the study locations and surrounding building and construction websites for mosquito breeding over the previous 6 months.

The FEHD will hold interdepartmental conferences with pertinent departments and stakeholders to recognize places with greater mosquito invasions and perform extensive and targeted mosquito control procedures. The FEHD will likewise disperse brochures and posters, and inform domestic estates that have actually signed up for the gravidtrap Rapid Alert System, recommending management representatives and locals to remain watchful and collaborate on mosquito avoidance and removal procedures. In addition, the FEHD will reinforce tracking of the gravidtrap index in the location to evaluate the efficiency of the mosquito control work.

The FEHD has actually up until now launched 7 batches of gravidtrap indexes for Aedes albopictus in October 2025, covering 64 study locations. Amongst these 64 study locations, 44 tape-recorded a decline or stayed the same in the private gravidtrap index as compared to the Area Gravidtrap Index last month, i.e. September 2025, representing that the locations’ mosquito invasion enhanced or kept a low level. Eighteen other locations taped a small boost, however the indexes were lower than 10 percent.

In reaction to the current chikungunya fever (CF) circumstance, the FEHD has actually carried out unique system to reinforce mosquito control operate in locations with a gravidtrap index in between 10 percent and 20 percent, rather of 20 percent or above under the initial system.

Public involvement is vital to the reliable control of mosquito issues. The FEHD interest members of the general public to continue to collaborate in reinforcing individual mosquito control steps, consisting of:

• clean up their facilities and look for any build-up of water inside their facilities;
• get rid of all unneeded water collections and remove the sources;
• check family products (those positioned in outside and open locations in specific), such as refuse containers, vases, air conditioning unit drip trays, and laundry racks to avoid stagnant water;
• alter the water in flower vases and dishes of potted plants a minimum of when every 7 days;
• correctly cover all containers that hold water to avoid mosquitoes from accessing the water; and
• appropriately get rid of short articles that can consist of water, such as empty lunch boxes and cans.

Beginning in August this year, following the conclusion of the security of specific study locations, and as soon as the current gravidtrap index and the density index are offered, the FEHD is sharing the appropriate info through news release, its site, and social networks. It intends to permit members of the general public to rapidly comprehend the mosquito problem scenario and reinforce mosquito control efforts, therefore decreasing the danger of CF transmission.

Following the suggestions from the World Health Organization and taking into consideration the regional circumstance in Hong Kong, the FEHD establishes gravidtraps in districts where mosquito-borne illness have actually been taped in the past, in addition to in largely inhabited locations such as real estate estates, medical facilities and schools to keep track of the breeding and circulation of Aedes albopictus mosquitoes, which can transfer CF and dengue fever. At present, the FEHD has actually established gravidtraps in 64 study locations of the neighborhood. Throughout the 2 weeks of security, the FEHD will gather the gravidtraps when a week. After the very first week of security, the FEHD will right away take a look at the glue boards inside the recovered gravidtraps for the existence of adult Aedine mosquitoes to assemble the Gravidtrap Index (First Phase) and Density Index (First Phase). At the end of the 2nd week of security, the FEHD will quickly examine the glue boards for the existence of adult Aedine mosquitoes. Information from the 2 weeks of monitoring will be integrated to get the Area Gravidtrap Index and the Area Density Index. The gravidtrap and density indexes for Aedes albopictus in various study locations along with info on mosquito avoidance and control procedures are readily available on the department’s web page (www.fehd.gov.hk/english/pestcontrol/dengue_fever/Dengue_Fever_Gravidtrap_Index_Update.html#).