A Brazilian soldier applies pesticide during an operation against Aedes mosquitoes at the Realengo neighborhood in Rio de Janeiro April 8, 2008. Dengue, a viral disease spread by the Aedes mosquito, has killed 67 people since January and infected more than 43,500 in Rio de Janeiro state, according to official figures. Last week, Health Minister Jose Temporao blamed a poor disease prevention network and fragile public health system for the crisis. REUTERS/Sergio Moraes (BRAZIL)