Analysis of Bioclima Factors on the Leishmaniasis Diseases in Yazd- Ardakan plain

Leishmaniasis is a parasitic disease which transfers to human through female sand fly bite. Its two main types are cutanenous leishmana and visceral. Spread and incidence of this decease is affected by economical, social, cultural and especially environmental and ecological conditions. In the current research, the bio-clima conditions, the spread and incidence time of this decease have been studied and analyzed at Yazd- Ardakan plain in Yazd province. For the performance of this research, the daily meteorological elements of three (3) meteorological stations of Yazd, Ardakan and Meybod during the statistical period of 1997 up to 2009 were used and the information about the prevalence amount of this disease were collected during this time period from the contaminated areas and also health centres. The findings show that maximum disease incidence is happened in the second half of the year particularly in the autumn. There is a weak positive correlation with relative humidity, a strong inverse correlation with average temperature, minimum and maximum temperature and maximum wind speed and a week inverse correlation between the amount of day light hours and the incidence of the disease numbers, which is visible from the view point of the difference of townships located in Yazd- Ardakan plain, also a significant difference of Alpha 0.05 was approved about the incidence of this decease at these 3 townships.