Residents react after a worker from the Ministry of Health (C) carried out fumigation around a property to help control the spread of Chikungunya and dengue fever, viruses of which are carried by mosquitoes, in Tocumen, on the outskirts of Panama City, September 6, 2014. At least three cases of Chikungunya have been reported in the last few months, according to Panama's Ministry of Health. REUTERS/Carlos Jasso (PANAMA - Tags: ENVIRONMENT HEALTH SOCIETY)