From the Pan American Health Organization website:
In recent months dengue has gotten worse in El Salvador, a trend that has turned combating the disease into a national priority. According to a World Health Organization Representative in El Salvador, by June 15, the number of clinical cases of Dengue reached 1301.Children between the ages of 5 and 9 years are most affected.
In light of this situation, the President of El Salvador has declared a state of emergency in the departments of San Salvador, Libertad, Santa Ana, and Cabañas, and a yellow alert in the rest of the country. Activities aimed at control include day and night sprayings, which are being intensified by army personnel, while brigades from schools, universities and communities help with the mechanical destruction of larval breeding sites. Additional activities have focused on the dissemination of information, increased communication, and face to face education, with the participation of radio and television networks.