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Situation analysis of cutaneous leishmaniasis in an endemic area,south of Iran

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Asian Pacific Journal of Tropical Medicine 2017年第1期10卷 88-93页

作者： Mansour Nazari Saman Nazari Ahmad Ali Hanafi-Bojd Ali Najafi Sasan Nazari department of medical entomology School of MedicineHamadan University of Medical SciencesHamadanIran medical student Students Research CenterHamadan University of Medical SciencesHamadanIran department of medical entomology and vector control School of Public HealthTehran University of Medical SciencesTehranIran Master of medical entomology Health Center of Kazerun cityIran

Objective: To update current situation of the cutaneous leishmaniasis(CL) in Kazerun County,southwest of Iran and to analyze the epidemiological aspects of the disease during 2005-2015,Methods: Data on CL were obtained from the health Center of Kazerun County,and then were analyzed and mapped using SPSS and Arc GIS 10.3,Results: A total of 700 cases of CL were recorded during the study period with an overall decreasing trend from 2005 to 2015,More than 60% of the patients were inhabitants of rural areas and males were infected more than females,Although there was not a significant difference between gender,job categories,residence and CL infection(P>0.05),age groups were significantly different(P0.05),Most of the acute lesions were found to be present on the hand,leg and face,respectively,The average CL incidence in the study area was calculated as 24.9/100 000 population,A hot spot for the disease was found in southern part of the area(P<0.05),Conclusions: This study revealed that CL is present in Kazerun country,Thus,effective monitoring and sustained suveillance system is crucial in counteracting the disease,and if possible,to eliminate it.

关键词： Cutaneous leishmaniasis Epidemiological study Southern Iran

Phytochemistry and larvicidal activity of Eucalyptus camaldulensis against malaria vector,Anopheles stephensi

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Asian Pacific Journal of Tropical Medicine 2010年第11期3卷 841-845页

作者： Sedaghat Mohamad Medhi Sanei Dehkordi Ali Reza Khnavi Mahnaz Abai Mohammad Reza Hadjiakhoondi Abbas Mohtarami Fatemeh Vatandoost Hassan department of medical entomology and vector control School of Public HealthTehran University of Medical SciencesTehranIran departments of Pharmacognosy Faculty of PharmacologyTehran University of Medical SciencesTehranIran

Objective:To determine phytochemistry and larvicidal activity of Eucalyptus eamaldulensis against Anopheles ***:The chemical compositions of the leaf essential oils were analyzed using gas chromatography/mass spectrometry（GC/MS）.The larvicidal activity of essential oils and extract of leaf were tested against 4th instar larvae of laboratory-reared Anopheles ***:GC/MS analyses identified the presence of 28 compounds corresponding to 99.60%of the total *** main constituents in the leaf essential oil were 1,8-cineole（69.46%）,γ-Terpinene（15.10%）,α-Pinene（5.47%） and Globulol（2%）.The leaf extract and volatile oil exerted significant larvicidal activity with LC50 values of 89.85 and 397.75 ppm,*** dose-response relationships were established with the highest dose of 320 ppm essential oil extract resulted almost 100%mortality in the ***:The larvicidal properties suggest that the essential oil of plant is a potential source of valuable larvicidal compounds against malaria vector and can be used as an alternative to synthetic insecticides.

关键词： Eucalyptus camaldulensis Essential oil Larvicide Anopheles stephensi

Phlebotomus papatasi and Meriones libycus as the vector and reservoir host of cutaneous leishmaniasis in Qomrood District,Qom Province,central Iran

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Asian Pacific Journal of Tropical Medicine 2011年第2期4卷 97-100页

作者： Rassi Yavar Saghafipour Abedin Abai Mohammad Reza Oshaghi Mohammad Ali Rafizadeh Sina Mohebail Mehdi Yaaghobi-Ershadi Mohammad Reza Mohtarami Fatemeh Farzinnia Babak department of medical entomology and vector control School of Public HealthTehran University of Medical SciencesIran department of Emergency Ministry of Health and Medical EducationIran department of Parasitology and Mycology School of Public HealthTehran University of Medical SciencesIran Healh Center of Qom Qom ProvinceIran

Objective:To determine the sand flies species responsible for most transmission of Leishmania major(L major) to human,as well as to determine the main reservoir hosts of the disease. Methods:Sand flies were collected using sticky papers and mounted in Puri’s medium for species *** were trapped by live Sherman *** sand flies and rodents were subjected to molecular methods for detection of leishmanial ***:Phlebotomus papatasi(***) was the common species in outdoor and indoor resting *** PCR technique only three specimens of 150 ***(2%) were found naturally infected by parasites with a band of 350 bp which is equal to the L major *** six rodents were captured by Sherman traps and *** investigation on blood smear of the animals for amastigote parasites revealed 1(3.22%) infected Meriones libycus(***). Infection of this animal to *** was confirmed by PCR against rDNA loci of the parasite. Conclusions:This is the first molecular report of parasite infection of both vector(***) and reservoir(***) to L major in the *** results indicated that *** was the primary vector of the disease and circulating the parasite between human and reservoirs and M. libycus was the most important host reservoir for maintenance of the parasite source in the area.

关键词： Cutaneous leishmaniasis vector Reservoir Iran

Bio-ecology of malaria vectors in an endemic area,Southeast of Iran

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Asian Pacific Journal of Tropical Medicine 2016年第1期9卷 29-35页

作者： Masoud Yeryan Hamid Rreza Basseri Ahamd Ali Hanafi-Bojd Ahmad Raeisi Hamideh Edalat Reza Safari Minab District health Center department of medical entomology & vector control School of Public HealthTehran University of Medical Sciences National Malaria Elimination Program Manager CDCMOH & ME Deputy of health Hormozgan University of Medical Sciences

Objective:To determine some bio-ecological aspects of malaria vectors in Jask County,where is targeted for malaria elimination in the national ***:Mosquitoes were collected monthly during 2013-2014 using different collection ***,ELISA test was used to detect the human blood index of *** susceptibility status of Anopheles stephensi was evaluated against the diagnostic dosages of seven WHO recommended ***:A total of 3 650 female and 4 736 Anopheles larvae were collected including Anopheles stephensi,Anopheles culicifacies s.l.,Anopheles *** fluviatilis s.l.,Anopheles moghulensis and Anopheles turkhodi *** stephensi was the dominant collected species on human baits and indoors with high rate of unfed and gravid specimens in internal and external window *** blood index was calculated as 14.3%for this *** was also found to be resistant to DDT and ***:The collected species had a wide range of habitats,and resting *** regarding to the presence of most important malaria vectors in *** of the disease may be so complicated;as based on the weather condition it can be transmitted during the whole year,except for cold *** this strong potential of transmission,existing population movements in the area may lead to imported cases of malaria and local outbreak(s).So,more specific studies on malaria vectors in high risk areas of Jask County are recommended.

关键词： Malaria Ecology Anopheles stephensi Insecticide resistance Southern Iran

Seroepidemiologic study on convalescent sera from dengue fever patients in Jinghong,Yunnan

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Virologica Sinica 2022年第1期37卷 19-29页

作者： Yingshuo Ma Man Li Lyu Xie Na Gao Dongying Fan Kaihao Feng Yao Yao Yong Zhou Ziyang Sheng Hongning Zhou Hui Chen Jing An department of Microbiology School of Basic Medical SciencesCapital Medical UniversityBeijing100069China Yunnan Institute of Parasitic Diseases Pu’er665000China People's Hospital of Xishuangbanna Dai Autonomous Prefecture Xishuangbanna666100China Xishuangbanna Mental health Center Xishuangbanna666100China Yunnan Provincial Key Laboratory of vector-Borne Diseases control and Research and Yunnan Provincial Collaborative Innovation Center for public health and Disease Prevention and control(YPCICPHDPC) Pu’er665000China Experimental Center for Basic medical Teaching School of Basic Medical SciencesCapital Medical UniversityBeijing100069China

After dengue virus(DENV)infection,antibody-dependent enhancement(ADE)is easy to occur when the neutralizing antibody(NAb)gradually decreases to a sub-neutralizing *** this cohort surveillance,we utilized sera samples collected from dengue fever patients at different convalescent phases in Jinghong City,to investigate the dynamic change rule of DENV-specific antibodies,and to analyze the risk of ADE caused by secondary infection with heterologous serotypes *** baseline serosurvey,191 four-year and 99 six-year sera samples during convalescence were collected in 2017 and 2019,*** positive rate of DENVspecific immunoglobulin G was 98.4%in 2017,which significantly decreased to 82.8%in *** geometric mean titer(GMT)of NAb decreased from 1:155.35 to 1:*** 290 overall samples,73 paired consecutive samples were used for follow-up *** four-year sera,the GMTs of NAb against DENV-3 and cross-reactive antibodies against DENV-1,DENV-2 and DENV-4 were 1:167.70,1:13.80,1:18.54 and 1:45.26,respectively,which decreased to 1:53.18,1:10.30,1:14.60 and 1:8.17 in six-year *** age-stratified analysis,due to the increasing number of ADE positive samples from 2017 to 2019 in 31–40 and 51–60 years groups,the risk of ADE in DENV-4 infection was positively associated with the extension of convalescent phase,and the odd ratio was higher than other *** the recovery period lengthened,the risk of secondary infection with DENV-1 and DENV-2 was *** results offer essential experimental data for risk prediction of severe dengue in hyper-endemic dengue areas,and provide crucial scientific insight for the development of effective dengue vaccines.

关键词： Dengue virus(DENV) Seroepidemiology Neutralizing antibody(NAb) Cross-reactive antibody Antibody dependent enhancement(ADE)

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 ***: Distribution data for vector and reservoir hosts of zoonotic cutaneous leishmaniasis in Yazd province were obtained from earlier studies conducted in the *** ecological niche modeling was used to predict environmental ***-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 were based on data of a regional climate change ***: 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, ***: The climate conditions are the major determinants of zoonotic cutaneous leishmaniasis incidence rate in Yazd *** climate conditions provide favorable habitats for ease transmission of zoonotic cutaneous leishmaniasis in this endemic *** 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 *** 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

Morphometric discrimination between females of two isomorphic sand fly species, Phlebotomus caucasicus and Phlebotomus mongolensis(Diptera:Phlebotominae) in endemic and non-endemic foci of zoonotic cutaneous leishmaniasis in Iran

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Asian Pacific Journal of Tropical Medicine 2019年第4期12卷 153-162页

作者： Azad Absavaran Mehdi Mohebali Vahideh Moin-Vaziri Alireza Zahraei-Ramazani Amir Ahmad Akhavan Fariba Mozaffarian Sayena Rafizadeh Yavar Rassi department of medical entomology and vector control School of Public Health Tehran University of Medical Sciences department of medical Parasitology and Mycology School of Public Health Tehran University of Medical Sciences department of medical Parasitology and Mycology School of Medicine Shahid Beheshti University of Medical Sciences Insect Taxonomy Research department Iranian Research Institute of Plant Protection Ministry of health and medical Education

Objective: To delineate reliable morphological characteristics for identifying and separating female Phlebotomus caucasicus and Phlebotomus mongolensis which exist sympatrically in the main foci of zoonotic cutaneous leishmaniasis in ***: Sand flies were collected using sticky trap papers from active colonies of rodent burrows installed from 16 catching sites. Morphometric measurements were analyzed of 87 Phlebotomus caucasicus and 156 Phlebotomus mongolensis. Univariate and multivariate analysis were carried out to determine significant morphometric variables for discrimination of the two species. Finally, seven morphological characteristics of 65 female Phlebotomus caucasicus and 124 female Phlebotomus mongolensis were ***: Univariate and multivariate analyses of 10 morphometric variables via Discriminant Function Analysis(DFA) and Principal Component Analysis(PCA) showed that five morphometric variables had an accuracy of 100% for discriminating female Phlebotomus caucasicus and Phlebotomus mongolensis. Moreover, PCA revealed that the five morphometric variables with the highest loadings separated these two species. Morphological studies on antennal flagellum(and its associated structures) and mouth-parts of female specimens demonstrated significant differences in several ***: The results show that morphological and morphometrical features can be used to discriminate two female isomorphic species, Phlebotomus caucasicus and Phlebotomus mongolensis accurately.

关键词： Leishmaniasis Phlebotomus caucasicus Phlebotomus mongolensis Morphometry Discriminant Functional Analysis Principal Component Analysis Iran

Crimean—Congo hemorrhagic fever:a molecular survey on hard ticks(Ixodidae) in Yazd province,Iran

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Asian Pacific Journal of Tropical Medicine 2011年第1期4卷 61-63页

作者： Salim Abadi Yaser Chinikar Sadegh Telmadarraiy Zakkyeh Vatandoost Hassan Moradi Maryam Oshaghi Mohammad Ali Ghiasi Seyed Mojtaba department of medical entomology and vector control School of Public HealthTehran University of Medical SciencesIran Arboviruses and Viral Hemorrhagic Fevers Laboratory(National Reference Laboratory) Pasteur Institute of Iran

Objective:To determine the rate of Crimean-Congo hemorrhagic fever virus(CCHFV) infection in hard ticks(Ixodidae) in Yazd province of ***:A molecular survey on hard ticks (Ixodidae) was conducted in Yazd province during 2008 -2009.A total of 140 hard ticks(three genera and 7 species) were collected from randomly selected villages and were exanimate for presence of CCHFV reverse transcription-polymerase chain reaction(RT-PCR) ***: CCHFV genome was found in 5.71%of hard *** positive ticks were from Hyalomma genus. Positive ticks including:Hyalomma dromedarii,Hyalomma marginatum,Hyalomma anatolicum, Hyalomma detritum,Hyalomma *** were not able to find virus in in Rhipicephalus sanguineus and Dermacentor *** exhibited that Hyalomma is the main vector in the study ***:Due to the presence of virus in 24 provinces’ out of 31,we recommend the use of acaricides and repellent to prevent disease transmission among humans. Greta care should be taken by the people who are working in slaughter houses.

关键词： CCHF Ticks Iran

The patterns and driving forces of dengue invasions in China

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Infectious Diseases of Poverty 2023年第2期12卷 36-50页

作者： Zhe Zhao Yujuan Yue Xiaobo Liu Chuanxi Li Wei Ma Qiyong Liu department of Epidemiology School of Public HealthCheeloo College of MedicineShandong University44 Wenhua RoadLixia DistrictJinan250012People’s Republic of China State Key Laboratory of Infectious Disease Prevention and control National Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and Prevention155 Changbai RoadChangping DistrictBeijing102206People’s Republic of China department of vector control School of Public HealthCheeloo College of MedicineShandong University44 Wenhua RoadLixia DistrictJinan250012People’s Republic of China Shandong University Climate Change and health Center Jinan250012People’s Republic of China

Background Global connectivity and environmental change pose continuous threats to dengue invasions from worldwide to ***,the intrinsic relationship on introduction and outbreak risks of dengue driven by the landscape features are still *** study aimed to map the patterns on source-sink relation of dengue cases and assess the driving forces for dengue invasions in *** We identified the local and imported cases(2006–2020)and assembled the datasets on environmental *** vector auto-regression model was applied to detect the cross-relations of source-sink *** selected the major environmental drivers via the Boruta algorithm to assess the driving forces in dengue outbreak dynamics by applying generalized additive *** reconstructed the internal connections among imported cases,local cases,and external environmental drivers using the structural equation *** From 2006 to 2020,81,652 local dengue cases and 12,701 imported dengue cases in China were *** hotspots of dengue introductions and outbreaks were in southeast and southwest China,originating from South and Southeast ***-imported dengue cases,as the Granger-cause,were the initial driver of the dengue dynamic;the suitable local bio-socioecological environment is the fundamental factor for dengue *** Bio8[odds ratio(OR)=2.11,95%confidence interval(CI):1.67–2.68],Bio9(OR=291.62,95%CI:125.63–676.89),Bio15(OR=4.15,95%CI:3.30–5.24),normalized difference vegetation index in March(OR=1.27,95%CI:1.06–1.51)and July(OR=1.04,95%CI:1.00–1.07),and the imported cases are the major drivers of dengue local transmissions(OR=4.79,95%CI:4.34–5.28).The intermediary effect of an index on population and economic development to local cases via the path of imported cases was detected in the dengue dynamic *** Dengue outbreaks in China are triggered by introductions of imported cases and boosted by landscape features and ***

关键词： Dengue Invasion Imported case Landscape Driving forces China