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https://www.readbyqxmd.com/read/29351273/understanding-the-legal-trade-of-cattle-and-camels-and-the-derived-risk-of-rift-valley-fever-introduction-into-and-transmission-within-egypt
#1
Sebastian Napp, Veronique Chevalier, Núria Busquets, Paolo Calistri, Jordi Casal, Mohamed Attia, Rehab Elbassal, Heba Hosni, Hatem Farrag, Noura Hassan, Rasha Tawfik, Sohair Abd Elkader, Shahin Bayomy
Rift Valley Fever (RVF) is a mosquito-borne zoonosis, which may cause significant losses for the livestock sector and have serious public health implications. Egypt has been repeatedly affected by RVF epidemics, mainly associated to the importation of animals from sub-Saharan countries, where the disease is endemic. The objective of our study was the improvement of the surveillance and control strategies implemented in Egypt. In order to do that, first we evaluated the legal trade of live animals into and within Egypt...
January 19, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29324834/experimental-transmission-of-west-nile-virus-and-rift-valley-fever-virus-by-culex-pipiens-from-lebanon
#2
Renée Zakhia, Laurence Mousson, Marie Vazeille, Nabil Haddad, Anna-Bella Failloux
West Nile virus (WNV) and Rift Valley fever virus (RVFV) are two emerging arboviruses transmitted by Culex pipiens species that includes two biotypes: pipiens and molestus. In Lebanon, human cases caused by WNV and RVFV have never been reported. However, the introduction of these viruses in the country is likely to occur through the migratory birds and animal trades. In this study, we evaluated the ability of Cx. pipiens, a predominant mosquito species in urban and rural regions in Lebanon, to transmit WNV and RVFV...
January 11, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29319426/dengue-hemorrhagic-fever-virus-in-saudi-arabia-a-review
#3
Jaffar A Al-Tawfiq, Ziad A Memish
Dengue fever is a global disease with a spectrum of clinical manifestation ranging from mild febrile disease to a severe disease in the form of dengue hemorrhagic fever and dengue shock syndrome. Dengue virus is one viral hemorrhagic fever that exists in the Kingdom of Saudi Arabia in addition to Alkhurma (Alkhurma) Hemorrhagic Fever, Chikungunya virus, Crimean-Congo Hemorrhagic Fever, and Rift Valley Fever. The disease is limited to the Western and South-western regions of Saudi Arabia, where Aedes aegypti exists...
January 10, 2018: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/29316967/ecological-distribution-and-population-dynamics-of-rift-valley-fever-virus-mosquito-vectors-diptera-culicidae-in-senegal
#4
Biram Biteye, Assane G Fall, Mamadou Ciss, Momar T Seck, Andrea Apolloni, Moussa Fall, Annelise Tran, Geoffrey Gimonneau
BACKGROUND: Many zoonotic infectious diseases have emerged and re-emerged over the last two decades. There has been a significant increase in vector-borne diseases due to climate variations that lead to environmental changes favoring the development and adaptation of vectors. This study was carried out to improve knowledge of the ecology of mosquito vectors involved in the transmission of Rift Valley fever virus (RVFV) in Senegal. METHODS: An entomological survey was conducted in three Senegalese agro-systems, Senegal River Delta (SRD), Senegal River Valley (SRV) and Ferlo, during the rainy season (July to November) of 2014 and 2015...
January 9, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29302776/epidemiological-situation-of-transboundary-animal-diseases-in-north-african-countries-proposition-of-a-regional-control-strategy
#5
REVIEW
Moustafa Kardjadj
The Food and Agricultural Organization (FAO) defined transboundary animal diseases (TADs) as those that are of significant economic, trade, and food security importance for a considerable number of countries. TADs can easily spread to other countries, reach epidemic proportions, and where control, management, or exclusion is required cooperation between several countries. The North African countries are vulnerable to several TADs by virtue of its geographical location, its borders with the Sahel region, and peculiar control constraints on the budgets of the national veterinary services of each country and on the livelihoods of livestock owners across the region...
January 5, 2018: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29288628/mating-behavior-of-the-west-nile-virus-vector-culex-pipiens-role-of-behavioral-asymmetries
#6
Giovanni Benelli
Culex pipiens is a vector of West Nile, Rift Valley fever, Japanese encephalitis virus and Usutu viruses. In agreement with the criteria of Integrated Vector Management, several research efforts have been devoted to develop behavior-based control tools to fight mosquito vectors. However, our knowledge of mosquito mating biology and sexual communication is still patchy. Despite the high relevance of C. pipiens as a vector of medical and veterinary importance, no studies on its mating behavior and the factors routing mating success have been conducted...
December 27, 2017: Acta Tropica
https://www.readbyqxmd.com/read/29287804/investigating-spatio-temporal-distribution-and-diffusion-patterns-of-the-dengue-outbreak-in-swat-pakistan
#7
Suleman Atique, Ta-Chien Chan, Chien-Chou Chen, Chien-Yeh Hsu, Somia Iqtidar, Valérie R Louis, Syed Abdul Shabbir, Ting-Wu Chuang
INTRODUCTION: Dengue has been endemic to Pakistan in the last two decades. There was a massive outbreak in the Swat valley in 2013. Here we demonstrate the spatio-temporal clustering and diffusion patterns of the dengue outbreak. METHODS: Dengue case data were acquired from the hospital records in the Swat district of Pakistan. Ring maps visualize the distribution and diffusion of the number of cases and incidence of dengue at the level of the union council. We applied space-time scan statistics to identify spatio-temporal clusters...
December 26, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/29281642/transmission-of-rift-valley-fever-virus-from-european-breed-lambs-to-culex-pipiens-mosquitoes
#8
Rianka P M Vloet, Chantal B F Vogels, Constantianus J M Koenraadt, Gorben P Pijlman, Martin Eiden, Jose L Gonzales, Lucien J M van Keulen, Paul J Wichgers Schreur, Jeroen Kortekaas
BACKGROUND: Rift Valley fever virus (RVFV) is a mosquito-borne bunyavirus of the genus Phlebovirus that is highly pathogenic to ruminants and humans. The disease is currently confined to Africa and the Arabian Peninsula, but globalization and climate change may facilitate introductions of the virus into currently unaffected areas via infected animals or mosquitoes. The consequences of such an introduction will depend on environmental factors, the availability of susceptible ruminants and the capacity of local mosquitoes to transmit the virus...
December 27, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29276743/datasets-for-mapping-pastoralist-movement-patterns-and-risk-zones-of-rift-valley-fever-occurrence
#9
Gladys Mosomtai, Magnus Evander, Charles Mundia, Per Sandström, Clas Ahlm, Osama Ahmed Hassan, Olivia Wesula Lwande, Moses K Gachari, Tobias Landmann, Rosemary Sang
Rift Valley fever (RVF) is a zoonotic disease affecting humans and animals. It is caused by RVF virus transmitted primarily by Aedes mosquitoes. The data presented in this article propose environmental layers suitable for mapping RVF vector habitat zones and livestock migratory routes. Using species distribution modelling, we used RVF vector occurrence data sampled along livestock migratory routes to identify suitable vector habitats within the study region which is located in the central and the north-eastern part of Kenya...
February 2018: Data in Brief
https://www.readbyqxmd.com/read/29250310/histoplasmosis-hepatitis-after-orthotopic-liver-transplantation
#10
Laura Washburn, N Thao Galván, Sadhna Dhingra, Abbas Rana, John A Goss
Histoplasmosis is an endemic mycosis in the Ohio and Mississippi River valleys and can cause disseminated infection in immunocompromised hosts. Disseminated histoplasmosis is often respiratory in nature and most cases in transplant patients occur within 2 years post-transplantation. A 32-year-old male on mycophenolate and tacrolimus who underwent an orthotopic liver transplantation 10 years prior presented with generalized body aches, fevers, mild congestion, dysuria and elevated transaminases. Liver biopsy revealed epithelioid granulomas with narrow-based budding yeast, suggesting histoplasma...
December 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/29230614/translating-predictions-of-zoonotic-viruses-for-policymakers
#11
Seth D Judson, Matthew LeBreton, Trevon Fuller, Risa M Hoffman, Kevin Njabo, Timothy F Brewer, Elsa Dibongue, Joseph Diffo, Jean-Marc Feussom Kameni, Severin Loul, Godwin W Nchinda, Richard Njouom, Julius Nwobegahay, Jean Michel Takuo, Judith N Torimiro, Abel Wade, Thomas B Smith
Recent outbreaks of Ebola virus disease and Zika virus disease highlight the need for disseminating accurate predictions of emerging zoonotic viruses to national governments for disease surveillance and response. Although there are published maps for many emerging zoonotic viruses, it is unknown if there is agreement among different models or if they are concordant with national expert opinion. Therefore, we reviewed existing predictions for five high priority emerging zoonotic viruses with national experts in Cameroon to investigate these issues and determine how to make predictions more useful for national policymakers...
December 11, 2017: EcoHealth
https://www.readbyqxmd.com/read/29228986/addressing-vulnerability-building-resilience-community-based-adaptation-to-vector-borne-diseases-in-the-context-of-global-change
#12
REVIEW
Kevin Louis Bardosh, Sadie Ryan, Kris Ebi, Susan Welburn, Burton Singer
BACKGROUND: The threat of a rapidly changing planet - of coupled social, environmental and climatic change - pose new conceptual and practical challenges in responding to vector-borne diseases. These include non-linear and uncertain spatial-temporal change dynamics associated with climate, animals, land, water, food, settlement, conflict, ecology and human socio-cultural, economic and political-institutional systems. To date, research efforts have been dominated by disease modeling, which has provided limited practical advice to policymakers and practitioners in developing policies and programmes on the ground...
December 11, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/29216533/assessing-the-zoonotic-potential-of-arboviruses-of-african-origin
#13
REVIEW
Marietjie Venter
Several African arboviruses have emerged over the past decade in new regions where they caused major outbreaks in humans and/or animals including West Nile virus, Chikungunya virus and Zika virus. This raise questions regarding the importance of less known zoonotic arboviruses in local epidemics in Africa and their potential to emerge internationally. Syndromic surveillance in animals may serve as an early warning system to detect zoonotic arbovirus outbreaks. Rift Valley fever and Wesselsbronvirus are for example associated with abortion storms in livestock while West Nile-virus, Shuni virus and Middelburg virus causes neurological disease outbreaks in horses and other animals...
December 4, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/29191515/mapping-the-spatial-distribution-of-aedes-aegypti-and-aedes-albopictus
#14
Fangyu Ding, Jingying Fu, Dong Jiang, Mengmeng Hao, Gang Lin
Mosquito-borne infectious diseases, such as Rift Valley fever, Dengue, Chikungunya and Zika, have caused mass human death with the transnational expansion fueled by economic globalization. Simulating the distribution of the disease vectors is of great importance in formulating public health planning and disease control strategies. In the present study, we simulated the global distribution of Aedes aegypti and Aedes albopictus at a 5×5km spatial resolution with high-dimensional multidisciplinary datasets and machine learning methods Three relatively popular and robust machine learning models, including support vector machine (SVM), gradient boosting machine (GBM) and random forest (RF), were used...
November 27, 2017: Acta Tropica
https://www.readbyqxmd.com/read/29191238/ethnopharmacological-studies-of-indigenous-plants-in-kel-village-neelum-valley-azad-kashmir-pakistan
#15
Khawaja Shafique Ahmad, Abdul Hamid, Fahim Nawaz, Mansoor Hameed, Farooq Ahmad, Jiabin Deng, Noreen Akhtar, Ambreen Wazarat, Sehrish Mahroof
BACKGROUND: This explorative study was undertaken for the first time in Kel village located in the Upper Neelum Valley, Azad Kashmir, Pakistan. The purpose was to document the indigenous knowledge of the native people used in the preparation of herbal medicines. METHODS: To get the data on traditional uses of medicinal plants, 20 informants were interviewed. Quantitative ethnobotanical indices, i.e., use value (UV), relative frequencies of citation (RFC), informant consensus factor (Fic), fidelity level (FL), data matrix ranking (DMR), preference ranking (PR), and jaccard index (JI), were calculated for the recorded medicinal plants...
December 1, 2017: Journal of Ethnobiology and Ethnomedicine
https://www.readbyqxmd.com/read/29187394/carrion-s-disease-the-sound-of-silence
#16
REVIEW
Cláudia Gomes, Joaquim Ruiz
Carrion's disease (CD) is a neglected biphasic vector-borne illness related to Bartonella bacilliformis. It is found in the Andean valleys and is transmitted mainly by members of the Lutzomyia genus but also by blood transfusions and from mother to child. The acute phase, Oroya fever, presents severe anemia and fever. The lethality is high in the absence of adequate treatment, despite the organism being susceptible to most antibiotics. Partial immunity is developed after infection by B. bacilliformis, resulting in high numbers of asymptomatic carriers...
January 2018: Clinical Microbiology Reviews
https://www.readbyqxmd.com/read/29187150/identification-of-pathogens-for-differential-diagnosis-of-fever-with-jaundice-in-the-central-african-republic-a-retrospective-assessment-2008-2010
#17
Christelle Luce Bobossi Gadia, Alexandre Manirakiza, Gaspard Tekpa, Xavier Konamna, Ulrich Vickos, Emmanuel Nakoune
BACKGROUND: Febrile jaundice results clinically in generalized yellow coloration of the teguments and mucous membranes due to excess plasma bilirubin, accompanied by fever. Two types are found: conjugated and unconjugated bilirubin jaundice. Jaundice is a sign in several diseases due to viruses (viral hepatitis and arbovirus), parasites (malaria) and bacteria (leptospirosis). In the Central African Republic (CAR), only yellow fever is included on the list of diseases for surveillance...
November 29, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29181086/recent-advances-in-the-development-of-antiviral-therapeutics-for-rift-valley-fever-virus-infection
#18
REVIEW
Colm Atkins, Alexander N Freiberg
Rift Valley fever virus (RVFV) is a mosquito-borne bunyavirus endemic to sub-Saharan Africa and the Arabian Peninsula and the etiological agent of Rift Valley fever. Rift Valley fever is a disease of major public health and economic concern, affecting livestock and humans. In ruminants, RVFV infection is characterized by high mortality rates in newborns and near 100% abortion rates in pregnant animals. Infection in humans is typically manifested as a self-limiting febrile illness, but can lead to severe and fatal hepatitis, encephalitis, hemorrhagic fever or retinitis with partial or complete blindness...
November 2017: Future Virology
https://www.readbyqxmd.com/read/29176850/a-23-year-retrospective-investigation-of-salmonella-typhi-and-salmonella-paratyphi-isolated-in-a-tertiary-kathmandu-hospital
#19
Raphaël M Zellweger, Buddha Basnyat, Poojan Shrestha, Krishna G Prajapati, Sabina Dongol, Paban K Sharma, Samir Koirala, Thomas C Darton, Christiane Dolecek, Corinne N Thompson, Guy E Thwaites, Stephen G Baker, Abhilasha Karkey
BACKGROUND: Salmonella serovars Typhi (S. Typhi) and Paratyphi A (S. Paratyphi A), the causative agents of enteric fever, have been routinely isolated organisms from the blood of febrile patients in the Kathmandu Valley since the early 1990s. Susceptibility against commonly used antimicrobials for treating enteric fever has gradually changed throughout South Asia since this time, posing serious treatment challenges. Here, we aimed to longitudinally describe trends in the isolation of Salmonella enterica and assess changes in their antimicrobial susceptibility in Kathmandu over a 23-year period...
November 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29167748/genetic-stability-of-rift-valley-fever-virus-mp-12-vaccine-during-serial-passages-in-culture-cells
#20
Nandadeva Lokugamage, Tetsuro Ikegami
Rift Valley fever (RVF) is a mosquito-borne zoonotic disease endemic to Africa which affects both ruminants and humans. RVF causes serious damage to the livestock industry and is also a threat to public health. The Rift Valley fever virus has a segmented negative-stranded RNA genome consisting of Large (L)-, Medium (M)-, and Small (S)-segments. The live-attenuated MP-12 vaccine is immunogenic in livestock and humans, and is conditionally licensed for veterinary use in the U.S. The MP-12 strain encodes 23 mutations (nine amino acid substitutions) and is attenuated through a combination of mutations in the L-, M-, and S-segments...
2017: NPJ Vaccines
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