Effective Mosquito Control Keeps Aedes albopictus Levels in Hong Kong Alarmingly Low

The Food and Environmental Hygiene Department (FEHD) of Hong Kong has reported that the levels of Aedes albopictus mosquitoes remain remarkably low, following the release of their monthly gravidtrap index for December 2024. The index stood at a mere 0.7%, categorizing it at the lowest alert level (Level 1), which indicates that the presence of these mosquitoes in the surveyed areas is not extensive.

In December 2024, the FEHD monitored 64 survey locations, with all reporting gravidtrap indices below the critical alert level of 20%. This suggests that effective mosquito control measures are yielding positive results. The monthly density index was also low at 1.3, indicating that only a small number of adult Aedes albopictus mosquitoes were detected in the traps, reinforcing the effectiveness of the ongoing prevention initiatives.

A spokesperson from the FEHD highlighted their intensified efforts in mosquito management, which include eliminating breeding sites, applying larvicides, conducting targeted fogging operations to eradicate adult mosquitoes, and strategically placing mosquito traps. The department has also been proactive in offering technical support and resources to other governmental bodies, enabling a more coordinated and effective anti-mosquito strategy, and enhancing public awareness regarding mosquito control.

As part of their sustained efforts, the FEHD launched a year-end clean-up campaign on January 6, 2025, which will last for 21 days. This initiative focuses on elevated mosquito prevention measures – from inspecting areas for stagnant water to eliminating potential breeding grounds, and ensuring regular disposal of discarded containers that may hold water.

Residents are urged to cooperate by actively checking their homes and surroundings for items that can collect water, such as pots and vases, and to ensure that drains are clear and functional to prevent water accumulation. Public awareness campaigns underscore the importance of proactive measures in preventing outbreaks of diseases carried by Aedes albopictus, including dengue fever, which remains a significant public health concern.

In 2024, dengue fever cases surged globally, with the World Health Organization reporting over 13 million cases, a record high. Hong Kong reported 156 imported cases and five local cases during the same year, stressing the need for continuous vigilance against these disease-carrying insects.

The successful management of Aedes albopictus levels in Hong Kong serves as a reminder of the collective responsibility in combating mosquito proliferation and protecting public health. With the collaborative efforts of government departments and public cooperation, it is crucial to maintain this momentum to ensure that Aedes albopictus does not threaten the community.

Stay tuned for further updates as the FEHD continues its fight against mosquitoes and ensures a safe environment for all residents!