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The public should step up anti-mosquito measures and stay alert to mosquito-transmitted diseases in the current rainy season which is favourable to mosquito breeding, a spokesman for the Food and Environmental Hygiene Department (FEHD) said today (June 23).
The call came following a rise of the monthly average ovitrap index for May to 9.5% from 3.1% in April. The ovitrap indices reflect the prevalence of Aedes albopictus, a mosquito vector for dengue fever transmission.
The inter-departmental anti-mosquito response mechanism has been activated in four districts which recorded readings above the alert zone of 20% - namely Yuen Kong (32%); Central, Sheung Wan and Sai Ying Pun (25.5%); Kwun Tong Central (21.4%); and Aberdeen and Ap Lei Chau (20.4%).
"The departments concerned have stepped up inspection and measures to enhance environmental hygiene conditions in areas under their ambits. The aim is to eliminate existing and potential mosquito-breeding grounds in addition to the regular weekly programme," the spokesman said.
"The FEHD will also closely monitor the situation of other areas, and strengthen control measures."
As for port areas, the average ovitrap index also rose from 0.1% in April to 0.6% in May.
Aedes albopictus can breed in very small water bodies. Surface channels, discarded containers, sand traps and abandoned tyres all provide breeding grounds for mosquitoes if they are not properly handled.
The spokesman advised the public and estate management bodies to scrub all drains and surface sewers and limewash them with alkaline detergent compound at least once a week to remove any mosquito eggs. They should also keep the drains free from blockage and fill up all depressions to prevent puddles.
He said people could inspect their homes and surroundings to remove potential breeding grounds; scrub vases and pot plant saucers at least once a week; properly dispose of containers such as soft drink cans and lunch boxes; and drill large holes in unused tyres.
"After rain, they should remove water from balconies, rooftops and courtyards immediately," he added.
The ovitrap indices and information on anti-mosquito measures under the Anti-Mosquito Weekly Inspection Programme are available on the department's website (www.fehd.gov.hk).
Ends/Wednesday, June 23, 2010
Issued at HKT 16:47
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