Considering altitude, the model we used found a positive trend to about 1250m above sea level, but higher altitudes demonstrated a negative presence probability for the disease.
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Situational Analysis of Visceral Leishmaniasis in the Most Important Endemic Area of the Disease in Iran.
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Studies conducted in other countries showed a decreasing trend in the disease incidence and an increasing trend in the spatial distribution of the disease ( 41 – 44 ).