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https://www.readbyqxmd.com/read/28806629/aseptic-meningitis-in-adults-and-children-diagnostic-and-management-challenges
#1
Bhavarth Shukla, Elizabeth A Aguilera, Lucrecia Salazar, Susan H Wootton, Quanhathai Kaewpoowat, Rodrigo Hasbun
BACKGROUND: Aseptic meningitis represents a common diagnostic and management dilemma to clinicians. OBJECTIVES: To compare the clinical epidemiology, diagnostic evaluations, management, and outcomes between adults and children with aseptic meningitis. STUDY DESIGN: We conducted a retrospective study from January 2005 through September 2010 at 9 Memorial Hermann Hospitals in Houston, TX. Patients age≥2months who presented with community-acquired aseptic meningitis with a CSF white blood cell count >5cells/mm(3) and a negative Gram stain and cultures were enrolled...
August 4, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28805637/wolbachia-mediated-virus-blocking-in-the-mosquito-vector-aedes-aegypti
#2
REVIEW
Gerard Terradas, Elizabeth A McGraw
Viruses transmitted by mosquitoes such as dengue, Zika and West Nile cause a threat to global health due to increased geographical range and frequency of outbreaks. The bacterium Wolbachia pipientis may be the solution reducing disease transmission. Though commonly missing in vector species, the bacterium was artificially and stably introduced into Aedes aegypti to assess its potential for biocontrol. When infected with Wolbachia, mosquitoes become refractory to infection by a range of pathogens, including the aforementioned viruses...
August 2017: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/28805636/west-nile-virus-and-its-vectors
#3
REVIEW
Alexander T Ciota
West Nile virus (WNV Flaviviridae; Flavivrus) is the most geographically widespread arbovirus in the world and the leading cause of arboviral encephalitis globally. Worldwide, WNV is maintained in an enzootic cycle between primarily Culex spp. mosquitoes and birds, with human infection and disease resulting from enzootic spillover. Dynamic and complex intrinsic and extrinsic factors contribute to the temporal and spatial variability in WNV transmission. The most current information on the relative contribution of each of these factors is reviewed and a case to incorporate detailed and localized environmental and genetic data into predictive models is presented...
August 2017: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/28803560/evidence-of-exposure-of-laughing-doves-spilopelia-senegalensis-to-west-nile-and-usutu-viruses-in-southern-tunisian-oases
#4
T Ayadi, A Hammouda, A Poux, T Boulinier, S Lecollinet, S Selmi
It has previously been suggested that southern Tunisian oases may be suitable areas for the circulation of flaviviruses. In order to anticipate and prevent possible epidemiological spread of flaviviruses in humans and domestic animals, the ecology of their transmission in the oasis system needs to be better understood. Thus, the aim of this study was to assess the seroprevalence of anti-flavivirus antibodies in the laughing dove (Spilopelia senegalensis), an abundant resident bird in Tunisian oases. Anti-flavivirus antibodies were detected in 17% of sampled doves...
August 14, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28774315/global-research-trends-in-west-nile-virus-from-1943-to-2016-a-bibliometric-analysis
#5
Samah W Al-Jabi
BACKGROUND: West Nile virus (WNV) is an emerging infectious disease which is most commonly transmitted to humans through mosquito, and is considered a major public-health problem worldwide. The aim of the current study is to bibliometrically analyze the quantity and quality of publications indexed in Scopus from different countries to reveal the characteristics of global research output regarding WNV. METHODS: This study is a bibliometric analysis based on the Scopus database...
August 3, 2017: Globalization and Health
https://www.readbyqxmd.com/read/28761113/cell-fusing-agent-virus-and-dengue-virus-mutually-interact-in-aedes-aegypti-cell-lines
#6
Guangmei Zhang, Sultan Asad, Alexander A Khromykh, Sassan Asgari
The genus Flavivirus contains more than 70 single-stranded, positive-sense arthropod-borne RNA viruses. Some flaviviruses are particularly medically important to humans and other vertebrates including dengue virus (DENV), West Nile virus, and yellow fever virus. These viruses are transmitted to vertebrates by mosquitoes and other arthropod species. Mosquitoes are also infected by insect-specific flaviviruses (ISFs) that do not appear to be infective to vertebrates. Cell fusing agent virus (CFAV) was the first described ISF, which was discovered in an Aedes aegypti cell culture...
July 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28758854/3d-qsar-pharmacophore-based-virtual-screening-molecular-docking-and-molecular-dynamics-simulation-toward-identifying-lead-compounds-for-ns2b-ns3-protease-inhibitors
#7
Pei H Luo, Xuan R Zhang, Lan Huang, Lun Yuan, Xang Z Zhou, X Gao, Ling S Li
NS2B-NS3 protease has been identified to serve as lead drug design target due to its significant role in West Nile viral (WNV) and dengue virus (DENV) reproduction and replication. There are currently no approved chemotherapeutic drugs and effective vaccines to inhibit DENV and WNV infections. In this work, 3D-QSAR pharmacophore model has been developed to discover potential inhibitory candidates. Validation through Fischer's model and decoy test indicate that the developed 3D pharmacophore model is highly predictive for DENV inhibitors, which was then employed to screen ZINC chemical library to obtain reasonable hits...
July 31, 2017: Journal of Receptor and Signal Transduction Research
https://www.readbyqxmd.com/read/28756236/accuracy-estimation-of-an-indirect-elisa-for-the-detection-of-west-nile-virus-antibodies-in-wild-birds-using-a-latent-class-model
#8
Marco Tamba, Antonino Caminiti, Alice Prosperi, Philippe Desprès, Davide Lelli, Giorgio Galletti, Ana Moreno, Giulia Paternoster, Annalisa Santi, Elio Licata, Sylvie Lecollinet, Luca Gelmini, Gianluca Rugna, Anna Procopio, Antonio Lavazza
West Nile virus (WNV) and Usutu virus (USUV), genus Flavivirus, are members of the Japanese encephalitis virus antigenic complex, and are maintained primarily in an enzootic cycle between mosquitoes and birds. WNV is zoonotic, and poses a threat to public health, especially in relation to blood transfusion. Serosurveillance of wild birds is suitable for early detection of WNV circulation, although concerns remain to be addressed as regards i) the type of test used, whether ELISA, virus neutralization test (VNT), plaque reduction neutralization test (PRNT), ii) the reagents (antigens, revealing antibodies), iii) the different bird species involved, and iv) potential cross-reactions with other Flaviviruses, such as USUV...
July 27, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28755145/mosquito-control-with-green-nanopesticides-towards-the-one-health-approach-a-review-of-non-target-effects
#9
Giovanni Benelli, Filippo Maggi, Roman Pavela, Kadarkarai Murugan, Marimuthu Govindarajan, Baskaralingam Vaseeharan, Riccardo Petrelli, Loredana Cappellacci, Suresh Kumar, Anders Hofer, Mohammad Reza Youssefi, Abdullah A Alarfaj, Jiang-Shiou Hwang, Akon Higuchi
The rapid spread of highly aggressive arboviruses, parasites, and bacteria along with the development of resistance in the pathogens and parasites, as well as in their arthropod vectors, represents a huge challenge in modern parasitology and tropical medicine. Eco-friendly vector control programs are crucial to fight, besides malaria, the spread of dengue, West Nile, chikungunya, and Zika virus, as well as other arboviruses such as St. Louis encephalitis and Japanese encephalitis. However, research efforts on the control of mosquito vectors are experiencing a serious lack of eco-friendly and highly effective pesticides, as well as the limited success of most biocontrol tools currently applied...
July 28, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28754422/state-of-the-art-vest-nile-virus-circulation-surveillance-in-italy-and-transfusion-risk-early-prevention-methods
#10
C Velati, P Angelini, S Pupella
After the Chikungunya outbreak in 2007 in Italy, a national Plan for the surveillance of human vector-borne diseases has been implemented and annually updated on the basis of the epidemiological changes based-evidences. The transfusion Authorities cooperates, since 2008, with public health services and veterinary (entomological and ornithological) surveillance systems. In some Italian regions, a common protocol for exchanging data is in place to identify the West Nile Virus (WNV) circulation in birds and mosquitoes: the goal is to anticipate the introduction of WNV-NAT screening in blood donors and, on the other hand, to limit testing only in geographic areas where the virus circulation is actual...
July 25, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/28754252/detection-of-selected-arboviral-infections-in-patients-with-history-of-persistent-fever-in-pakistan
#11
Tahir Yaqub, Muhammad Zubair Shabbir, Nadia Mukhtar, Zarfishan Tahir, Tariq Abbas, Ehab Amir, Gabriel Defang
Surveillance is a valuable tool for understanding prevailing and previously undiagnosed infections in a geographic area. We examined 480 archived serum samples from patients with history of persistent fever (>40°C, 60-72h) who were referred to hospitals in Rawalpindi/Islamabad, Lahore, and Faisalabad districts for dengue antibody detection in 2014-15. Each sample was processed for detection of antigens and seroconversion, using real-time polymerase chain reaction and enzyme linked immunosorbent assay, respectively, against dengue haemorrhagic fever (DHF) virus serotypes 1-4, West Nile virus fever (WNVF), Crimean-Congo haemorrhagic fever (CCHF), and Chikungunya virus (CGV)...
July 25, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28754189/progress-and-works-in-progress-update-on-flavivirus-vaccine-development
#12
REVIEW
Matthew H Collins, Stefan W Metz
Most areas of the globe are endemic for at least one flavivirus, putting billions at risk for infection. This diverse group of viral pathogens causes a range of manifestations in humans from asymptomatic infection to hemorrhagic fever to encephalitis to birth defects and even death. Many flaviviruses are transmitted by mosquitos and have expanded in geographic distribution in recent years, with dengue virus being the most prevalent, infecting approximately 400 million people each year. The explosive emergence of Zika virus in Latin America in 2014 refocused international attention on this medically important group of viruses...
July 25, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28753671/self-reported-infections-during-international-travel-and-notifiable-infections-among-returning-international-travellers-sweden-2009-2013
#13
Viktor Dahl, Anders Wallensten
We studied food and water-borne diseases (FWDs), sexually transmitted diseases (STDs), vector-borne diseases (VBDs) and diseases vaccinated against in the Swedish childhood vaccination programme among Swedish international travellers, in order to identify countries associated with a high number of infections. We used the national database for notifiable infections to estimate the number of FWDs (campylobacteriosis, salmonellosis, giardiasis, shigellosis, EHEC, Entamoeba histolytica, yersinosis, hepatitis A, paratyphoid fever, typhoid fever, hepatitis E, listeriosis, cholera), STIs (chlamydia, gonorrhoea and acute hepatitis B), VBDs (dengue fever, malaria, West Nile fever, Japanese encephalitis and yellow fever) and diseases vaccinated against in the Swedish childhood vaccination programme (pertussis, measles, mumps, rubella, diphtheria) acquired abroad 2009-2013...
2017: PloS One
https://www.readbyqxmd.com/read/28752627/vector-competence-of-northern-and-southern-european-culex-pipiens-pipiens-mosquitoes-for-west-nile-virus-across-a-gradient-of-temperatures
#14
C B F Vogels, G P Göertz, G P Pijlman, C J M Koenraadt
In Europe, West Nile virus (WNV) outbreaks have been limited to southern and central European countries. However, competent mosquito vectors and susceptible bird hosts are present in northern Europe. Differences in temperature and vector competence of mosquito populations may explain the absence of WNV outbreaks in northern Europe. The aim of the present study was to directly compare vector competence of northern and southern European Culex pipiens (Cx. p.) pipiens mosquitoes for WNV across a gradient of temperatures...
July 28, 2017: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/28750867/west-nile-virus-infection-in-horses-indian-ocean
#15
E Cardinale, C Bernard, S Lecollinet, V M Rakotoharinome, J Ravaomanana, M Roger, M M Olive, D Meenowa, M R Jaumally, J Melanie, J M Héraud, S Zientara, C Cêtre-Sossah
The circulation of West Nile virus (WNV) in horses was investigated in the Southwest Indian ocean. In 2010, blood samples were collected from a total of 303 horses originating from Madagascar, Mauritius, Reunion and the Seychelles and tested for WNV-specific antibodies. An overall seroprevalence of 27.39% was detected in the Indian Ocean with the highest WNV antibody prevalence of 46.22% (95% CI: [37.4-55.2%]) in Madagascar. The age and origin of the horses were found to be associated with the WNV infection risk...
August 2017: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/28748841/prevalence-of-igg-antibodies-for-the-west-nile-virus-in-human-population-in-tripoli-libya
#16
Taher Shaibi, Walid K Saadawi, H Aghila, Badereddin B Annajar
BACKGROUND & OBJECTIVES: West Nile fever (WNF) is a mosquito-borne viral infection, circulated in natural cycles between birds and mosquitoes, particularly Culex species. It is transmitted to humans through mosquito bites, and causes a variety of clinical outcomes, ranging from asymptomatic or mild febrile illness to severe men in go encepha- litis with some fatalities observed in older or immunocompromised patients. West Nile virus (WNV) transmission is considerably influenced by environmental conditions; and abundance of avifauna and mosquitoes...
April 2017: Journal of Vector Borne Diseases
https://www.readbyqxmd.com/read/28746985/west-nile-virus-lineage-2-in-culex-specimens-from-iran
#17
Nariman Shahhosseini, Sadegh Chinikar, Seyed Hassan Moosa-Kazemi, Mohammad Mehdi Sedaghat, Mohammad Hassan Kayedi, Renke Lühken, Jonas Schmidt-Chanasit
OBJECTIVE: Screening of mosquitoes for viruses is an important forecasting tool for emerging and reemerging arboviruses. Iran has been known to harbor medically important arboviruses such as West Nile virus (WNV) and dengue virus (DENV) based on seroepidemiological data. However, there are no data about the potential mosquito vectors for arboviruses in Iran. This study was performed to provide mosquito and arbovirus data from Iran. MATERIALS AND METHODS: 32,317 mosquitos were collected at 16 sites in 5 provinces of Iran in 2015 and 2016...
July 26, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28746104/west-nile-virus
#18
R Bryan Simon
No abstract text is available yet for this article.
August 2017: Nursing
https://www.readbyqxmd.com/read/28744282/antiviral-properties-of-the-natural-polyphenols-delphinidin-and-epigallocatechin-gallate-against-the-flaviviruses-west-nile-virus-zika-virus-and-dengue-virus
#19
Ángela Vázquez-Calvo, Nereida Jiménez de Oya, Miguel A Martín-Acebes, Emilia Garcia-Moruno, Juan-Carlos Saiz
The Flavivirus genus contains important pathogens, such as West Nile virus (WNV), Zika virus (ZIKV), and Dengue virus (DENV), which are enveloped plus-strand RNA viruses transmitted by mosquitoes and constitute a worrisome threat to global human and animal health. Currently no licensed drugs against them are available, being, thus, still necessary the search for effective antiviral molecules. In this line, a novel antiviral approach (economical, simple to use, and environmental friendly) is the use of natural compounds...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28742857/dna-immunisation-with-dengue-virus-e-protein-domains-i-ii-but-not-domain-iii-enhances-zika-west-nile-and-yellow-fever-virus-infection
#20
Jose L Slon Campos, Monica Poggianella, Sara Marchese, Monica Mossenta, Jyoti Rana, Francesca Arnoldi, Marco Bestagno, Oscar R Burrone
Dengue virus (DENV), the causative agent of dengue disease, is among the most important mosquito-borne pathogens worldwide. DENV is composed of four closely related serotypes and belongs to the Flaviviridae family alongside other important arthropod-borne viral pathogens such as Zika virus (ZIKV), West Nile virus (WNV) and Yellow Fever virus (YFV). After infection, the antibody response is mostly directed to the viral E glycoprotein which is composed of three structural domains named DI, DII and DIII that share variable degrees of homology among different viruses...
2017: PloS One
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