impact of climate and environmental factors on west nile virus circulation in iran

نویسندگان

farzaneh ahmadnejad viral vaccines production department, pasteur institute, tehran, iran and timc-imag team epsp, vetagrosup, campus vétérinaire de lyon, france

vahid otarod quarantine and biosafety directorate general, iran veterinary organization, tehran, iran

amanollah fathnia department of geography, razi university, kermanshah, iran

ali ahmadabadi faculty of geography, kharazmi university, tehran, iran

چکیده

background: geographic distribution of west nile virus (wnv) is heterogeneous in iran by a high circulation in the southern-western areas. the objective of our study was to determine environmental and climatic factors associ­ated with the risk of wnv equine seropositivity in iran. methods: serological data were obtained from a serosurvey conducted in equine population in 260 districts in iran. the climate and environmental parameters included in the models were distance to the nearest wetland area, type of stable, normalized difference vegetation index (ndvi), annual mean temperature, humidity and precipitation. results: the important risk factors included annual mean temperature, distance to wetlands, local and seasonal ndvi differences. the effect of local ndvi differences in spring was particularly notable. this was a normalized difference of average ndvi between two areas: a 5 km radius area centered on the stable and the 5–10 km sur­rounding area. conclusion: the model indicated that local ndvi’s contrast during spring is a major risk factor of the transmission of west-nile virus in iran. this so-called oasis effect consistent with the seasonal production of vegetation in spring, and is associated to the attractiveness of the local ndvi environment for wnv vectors and hosts.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Impact of Climate and Environmental Factors on West Nile Virus Circulation in Iran

BACKGROUND Geographic distribution of West Nile virus (WNV) is heterogeneous in Iran by a high circulation in the southern-western areas. The objective of our study was to determine environmental and climatic factors associated with the risk of WNV equine seropositivity in Iran. METHODS Serological data were obtained from a serosurvey conducted in equine population in 260 districts in Iran. T...

متن کامل

the impact of e-readiness on ec success in public sector in iran the impact of e-readiness on ec success in public sector in iran

acknowledge the importance of e-commerce to their countries and to survival of their businesses and in creating and encouraging an atmosphere for the wide adoption and success of e-commerce in the long term. the investment for implementing e-commerce in the public sector is one of the areas which is focused in government‘s action plan for cross-disciplinary it development and e-readiness in go...

ec adoption and critical success factors of ec in smes in iran

تجارت الکترونیکی شیوه اجرای مسئولیتها، تقابل با مشتریان و امور معمول عملیاتی در شرکتها را تغییر داده است. تجارت الکترونیکی در عمل تنها خرید و فروش کالاها را از طریق ابزار الکترونیک نمی باشد، بلکه تمام فعالیتهای لازم جهت انجام فرایند فروش را نیز در بر میگیرد. در اواخر دهه 1990 بسیاری از شرکتها فعالیتهای خود را به منظور دستیابی به مشتریان جدید و یا ارائه فرصتهای جدید به مشتریان موجود گسترش دادند...

Prevalence of West Nile Virus Infection in the Cities of Neka and Shiraz, Iran

Abstract Background and Objective: West Nile virus (WNV) is a member of the genus Flavivirus that can cause viral infections in human. This study aimed at detecting IgG antibodies against WNV in patients of two cities of Neka and Shiraz. Material and Methods: the participants were 46 possible WNV case from Neka (13 women and 10 men) and Shiraz (10 women and 13 men).  IgG assay was ...

متن کامل

West Nile Virus Circulation in Mosquitoes in Greece (2010–2013)

Background of the Study. Following a large West Nile virus (WNV) epidemic in Northern Greece in 2010, an active mosquito surveillance system was implemented, for a 3-year period (2011, 2012, and 2013). Description of the Study Site and Methodology. Using mainly CO2 mosquito traps, mosquito collections were performed. Samples were pooled by date of collection, location, and species and examined ...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
journal of arthropod-borne diseases

جلد ۱۰، شماره ۳، صفحات ۳۱۷-۳۲۹

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023