The Government is concerned that several residential areas including Kowloon Tong and Ho Man Tin recorded an ovitrap index of more than 20% in September.

Speaking on a radio programme this morning, Food & Environmental Hygiene Department Consultant Dr Ho Yuk-yin said to rectify the situation, people must be remain vigilant at all times and take proper measures to eliminate mosquitoes.

In view of the fact that construction sites are potential mosquito breeding places, the Food & Environmental Hygiene Department has stepped up its checks against these areas, he said.

Repeated offenders will be disqualified from tendering for government projects, he added.

Dr Ho stressed that the fight against mosquitoes will not be successful without the full support of the public, adding that they should enhance anti-mosquito measures.

They should also remain alert when visiting southeast Asian countries, as Dengue fever is endemic there.