Colombo, Jun 3 (IANS): Sri Lanka's National Dengue Control Unit (NDCU) has said that 71 divisions in 15 districts, including the capital Colombo, had been identified as high-risk zones for dengue fever.
The NDCU said on Sunday in a statement that it carried out a survey between May 26 and June 1 and observed a surge in mosquito breeding places, Xinhua news agency reported.
The agency added that though dengue cases reported from January to April remained relatively low, a surge of cases could be expected from May onwards with the onset of southwest monsoon according to experience from previous years.
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According to the NDCU, nearly 25,000 cases have been reported so far this year with nine deaths.