Paraguayan police pick up garbage and search for puddles of still water and signs of mosquito larvae at the start of a campaign to combat the spread of dengue fever, on the grounds of a school in Asuncion April 5, 2011. With the Health Ministry reporting 22 deaths and more than 18,000 suspected cases of dengue in the first three months of this year, officials fear that 2011 may surpass 2007, when Paraguay suffered its worst dengue epidemic with 17 deaths and 25,000 cases for the whole year. REUTERS/Jorge Adorno (PARAGUAY - Tags: HEALTH POLITICS EDUCATION)