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Climate change and potential distribution of zoonotic cutaneous leishmaniasis in Central Iran: Horizon 2030 and 2050

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Asian Pacific Journal of Tropical Medicine 2019年第5期12卷 204-215页

作者： Babak Shiravand Ahmad Ali Hanafi-Bojd Abbas Ali Dehghani Tafti Mohammad Reza Abai Ali Almodarresi Masoud Mirzaei Department of Health in Disasters and Emergencies School of Public Health Shahid Sadoughi University of Medical Sciences Department of Medical Entomology&Vector Control School of Public Health Tehran University of Medical Sciences Engineering College GIS&RS Department Yazd Branch Islamic Azad University Department of Epidemiology&Biostatistics School of Public Health Shahid Sadoughi University of Medical Sciences

Objective: To investigate and predict the effects of climate change on the potential distribution of the main vector and reservoir hosts of the disease in Yazd province in the future.Methods: Distribution data for vector and reservoir hosts of zoonotic cutaneous leishmaniasis in Yazd province were obtained from earlier studies conducted in the area.MaxEnt ecological niche modeling was used to predict environmental suitability.BCC-CSM1-1(m) model and two climate change scenarios, RCP 4.5 and RCP 8.5 were used for horizons 2030 and 2050 climate projections.Future projections were based on data of a regional climate change model.Results: With both scenarios in 2030 and 2050, the results of jackknife test indicated that the mean temperature of wettest quarter and temperature annual range had the greatest effect on the model for the vector and the reservoir hosts, respectively.Conclusions: The climate conditions are the major determinants of zoonotic cutaneous leishmaniasis incidence rate in Yazd Province.These climate conditions provide favorable habitats for ease transmission of zoonotic cutaneous leishmaniasis in this endemic area.Habitats suitability for the vector and reservoir will be expanding in the coming years compared with the current conditions, such that, in horizon 2030 & 2050, the probability of the presence of the vector and reservoir within 38 580 and 37 949 km^2, respectively, from Yazd province is above 60%.Moreover, an increase is predicted in the presence of the vector in the western parts and the reservoir in the northern and central parts of the province in the future.Understanding the role of environmental and bioclimatic factors in zoonotic cutaneous leishmaniasis occurrence can provide a guide for policy-makers in the creation and implementation of more effective policies for prevention and control.

关键词： Cutaneous leishmaniasis Climate change RCP scenario Phlebotomus papatasi Rhombomys opimus

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Geographical distribution and ecological features of the great gerbil subspecies in the main zoonotic cutaneous leishmaniasis foci in Iran

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Asian Pacific Journal of Tropical Medicine 2010年第10期3卷 800-803页

作者： Mohammad Reza Abai Mohammad Ali Oshaghi Leila Tajedin Yavar Rassi Amir Ahmad Akhavan Department of Medical Entomology and Vector Control School of Public HealthTehran University of Medical Sciences

Objective:To reveal subspecies composition of Rhombomy opimus(R.opimus) in Iran. Methods:In this study,field specimens of the gerbil were collected from all its geographical rang in northeast and central parts of Iran and identified on basis of morphological characteristics.Results:Results revealed presence of two subspecies of R.opimus sodalis and R. opimus sargadensis in the country.The first subspecies with brown to hazel-nut color and a size bigger than a typical R.opimus was found only in Golestan province,an isolated colony which is located in plains of north slopes of Alborz Chain Mountains of the country,connected with the Turkmenistan.The subspecies of R.opimus sargadensis with a yellowish color and similar size as a typical R.opimus was found in all other areas of the great gerbil distribution in Iran.There was a distinct topographic difference but similar ectoparasites between colonies of the two subspecies in the study area.Conclusions:Further ecological and genetic investigations are required for more detailed description of the R.opimus subspecies range and structure.The R.opimusPhlebotomus papatasi-Leishmania major association and the ZCL severity and outcome in hosts are discussed.

关键词： Rhombomys opimus Great gerbil Ecology Reservoir Leishmaniasis Iran

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