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Trends of prevalence of microfilariae (mf) and circulating filarial antigen (CFA) based on ICT test. During the 2009 survey, the prevalences of microfilaraemia and antigenaemia were found to have significantly decreased by 95.7% (from 20.9% to 0.9%; P < 0.0001) and 68.8% (from 34.6% to 10.8%; P < 0.0001), respectively.
