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The Food and Environmental Hygiene Department (FEHD) today (December 17) reminded the public to keep up anti-mosquito measures and stay alert to the risk of mosquito-transmitted diseases during winter, despite a significant drop in the monthly average ovitrap index from 3.4% in October to 0.6% in November.
The ovitrap indices reflect the prevalence of Aedes albopictus, a mosquito vector for dengue fever transmission. Among the 38 areas surveyed last month, positive ovitrap indices were recorded in nine areas, ranging from 1.8% to 5.5%, with the highest in Kwai Chung.
As for port areas, the average ovitrap index dropped from 0.9% in October to 0.1% in November.
"Despite the relatively lower index levels recorded in November, the departments concerned will continue their efforts to enhance environmental hygiene conditions in areas under their ambit to eliminate existing and potential mosquito-breeding grounds, in addition to the regular weekly programme. The FEHD will strengthen control measures whenever necessary," an FEHD spokesman said.
Aedes albopictus breeds in small water bodies. 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.
People should 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.
During Christmas and New Year holidays, people travelling to areas where mosquito-borne diseases prevail are advised to take the following precautionary measures:
* Wear light-coloured, long-sleeved clothes and trousers;
* Use insect repellents over exposed parts of the body when staying outdoors; and
* Use mosquito screens or nets when the room is not air-conditioned.
Travellers returning from these places should seek medical advice if they have symptoms such as fever, severe headache or muscle and joint pain. They should also inform their doctor of their travel history.
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/Friday, December 17, 2010
Issued at HKT 16:01
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