The monthly ovitrap index was 0.1% in February, the same as January, the Food & Environmental Hygiene Department says, adding the index for port areas stood at 0%.

The index reflects the distribution of the mosquito vector for Dengue fever transmission. At the district level, almost all 38 locations surveyed last month recorded zero on the ovitrap indices except Sham Shui Po East where the index was 1.9%.

The department's Consultant Dr Ho Yuk-yin said the figures can rise quickly as mosquitoes are ready to hatch from eggs once the weather turns warm and wet again. He urged residents to support the first phase of this year's anti-mosquito campaign, running from February 27 to March 25.

For detailed ovitrap indices and information on anti-mosquito measures, visit the department's website or call 2868 0000. For information and health advice on Dengue fever and Japanese encephalitis, visit the Centre for Health Protection's website or call 2833 0111.