People should maintain proper anti-mosquito measures amid the current warm and humid weather as the ovitrap index rose to 1.4% in March, from 0.3% in February, the Food & Environmental Hygiene Department says.

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 ranging from 1.7% to 18.2% were recorded in 11 areas, with the highest reported in Lam Tin. The index for port areas also rose from 0% in February to 0.3% in March.

Although the mosquitoes are rather inactive at the moment, preventive measures should not be relaxed as Dengue cases are still prevalent in neighbouring places. Any lapse in mosquito control could contribute to a rise in the indices.

More details about the ovitrap indices and anti-mosquito measures are available here or call 2868 0000. For information and health advice on Dengue fever, click here or call 2833 0111.