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Sri Lankan Highways Minister Mervyn Silva (L) inspects an unidentified local municipal official who was tied to a tree at the local authority office in the Colombo suburb of Kelaniya on August 3, 2010 as punishment for not controlling the spread of dengue. The mosquito-spread disease has claimed 171 lives and infected nearly 25,000 people so far this year, according to Sri Lankan health records. AFP PHOTO/STR (Photo credit should read STR/AFP/Getty Images)

Sri Lankan Highways Minister Mervyn Silva (L) inspects an unidentified local municipal official who was tied to a tree at the local authority office in the Colombo suburb of Kelaniya on August 3, 2010 as punishment for not controlling the spread of dengue. The mosquito-spread disease has claimed 171 lives and infected nearly 25,000 people so far this year, according to Sri Lankan health records. AFP PHOTO/STR (Photo credit should read STR/AFP/Getty Images)