A worker of the Health Ministry fumigates against the Aedes aegypti mosquito to prevent the spread of dengue fever and chikungunya in Managua, on August 25, 2015. The Nicaraguan government issued a health alert as a dengue fever and chikungunya epidemic have killed 9 people and infected nearly 200,000 between January and August this year in Central America. Alerts have been declared in Nicaragua, El Salvador and Guatemala. AFP PHOTO / INTI OCON