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(A) Map of Sri Lanka with the district of Matara shaded. (B) Geographical distribution of leishmaniasis patients in Matara district. (C) Kernel density estimate function of leishmaniasis patient distribution. A patient cluster was defined as the occurrence of a patient count of three or more with a maximum distance of 500 m between two adjacent points. The dark colour areas indicate the distribution of risk of acquiring the disease in relation to the epicentres.
