HEALTH authorities will distribute 100 tonnes of Abate nationwide starting this week in order to battle the spread of dengue fever this rainy season, Ngan Chantha, director of the National Anti-Dengue Programme, said yesterday. Added to water, Abate helps to kill mosquito larvae and prevent the spread of the adult mosquitoes. According to the National Centre for Parasitology, Entomology and Malaria Control, there have been 3,771 reported cases of dengue and 10 deaths in the first seven months of 2010. The same period last year saw 2,355 cases and seven deaths from the disease.