A health worker carries out fumigation to help control the spread of Chikungunya and dengue fever, which are caused by viruses carried by mosquitoes, at a neighbourhood in Tegucigalpa, Honduras, July 21, 2015. The Honduran Ministry of Health is conducting fumigations in some areas of the capital to clean up and control an outbreak of chikungunya, which has reported more than 50,000 cases since beginning of the year, local media reported. (Photo by Jorge Cabrera/Reuters)
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