Monthly gravidtrap index for Aedes albopictus mosquitoes for April remains at lowest level

Monthly gravidtrap index for Aedes albopictus mosquitoes for April remains at lowest level 
In April, all 64 survey areas recorded a gravidtrap index level lower than the alert level of 20 per cent. Moreover, the monthly density index for Aedes albopictus in April was 1.1, which means that an average of 1.1 Aedes albopictus adult was found in the Aedes-positive gravidtraps, indicating that the number of adult Aedes albopictus was not abundant in the survey areas. The gravidtrap and density indices for Aedes albopictus in different survey areas, as well as information on mosquito prevention and control measures, are available on the department website at www.fehd.gov.hk 
The FEHD appeals to members of the public to continue to stay alert and work together to carry out mosquito prevention and control measures early, including inspecting their homes and surroundings to remove potential breeding grounds, changing water in vases and scrubbing their inner surfaces, removing water in saucers under potted plants at least once a week, properly disposing of containers such as soft drink cans and lunch boxes, and drilling large holes in unused tyres. The FEHD also advises members of the public and estate management bodies to keep drains free of blockage and level all defective ground surfaces to prevent the accumulation of water. They should also scrub all drains and surface sewers with an alkaline detergent at least once a week to remove any mosquito eggs.Issued at HKT 17:00