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https://www.readbyqxmd.com/read/28918127/clinical-laboratory-and-virological-data-from-suspected-zikv-patients-in-an-endemic-arbovirus-area
#1
Tatiana Elias Colombo, Cássia Fernanda Estofolete, Andréia Francesli Negri Reis, Natal Santos da Silva, Morgana Lima Aguiar, Eliana Márcia Sotello Cabrera, Izalco Nuremberg Penha Dos Santos, Fabiana Rodrigues Costa, Lilian Elisa Arão Antônio Cruz, Patrícia Lopes Rombola, Ana Carolina Bernardes Terzian, Maurício Lacerda Nogueira
BACKGROUND: The emergence of Zika virus (ZIKV) presents new challenges to both clinicians and public health authorities. Overlapping clinical features between the diseases caused by ZIKV, dengue (DENV) and chikungunya (CHIKV) and the lack of validated serological assays for ZIKV make accurate diagnosis difficult. Brazilian authorities largely rely on clinical and epidemiological data for the epidemiological and clinical classifications of most ZIKV cases. OBJECTIVE: To report the laboratory and clinical profiles of patients diagnosed with Zika fever based only on clinical and epidemiological data...
September 9, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28913959/quantification-through-tlc-densitometric-analysis-repellency-and-anticholinesterase-activity-of-the-homemade-extract-of-indian-cloves
#2
Raphael S Affonso, Josélia A Lima, Bruno Lessa, João V O Caetano, Marcos T Obara, Andrea Nóbrega, Eugenie Nepominova, Kamil Musilek, Kamil Kuca, Gláucia Barbosa Candido Alves Slana, Tanos C C França
The rise of mosquito's transmitted diseases, like dengue, zika and chikungunya in Brazil in the last years has increased the concerns on protection against mosquito's bites. However, the prohibitive prices of the commercially available repellents for the majority of the Brazilian population, has provoked a search for cheaper solutions, like the use of the homemade ethanolic extract of Indian clove (Syzygium aromaticum L.) as repellent, which has been reported as quite efficient by the local press. In order to verify this, we performed here, the quantification of the main components of this extract through high-performance thin-layer chromatography (HPTLC)-densitometry and evaluated its efficiency as repellent, as well as the acetylcholinesterase (AChE) inhibition capacity...
September 15, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/28877754/association-between-suspected-zika-virus-disease-during-pregnancy-and-giving-birth-to-a-newborn-with-congenital-microcephaly-a-matched-case-control-study
#3
Ticiane Henriques Santa Rita, Renata Barcelos Barra, Gisele Pasquali Peixoto, Pedro Goes Mesquita, Gustavo Barcelos Barra
OBJECTIVE: In early 2015, an outbreak of an acute exanthematous illness with dengue-like symptoms occurred in northeastern Brazil. By the end of the same year, an unexpected increase in the number of cases of microcephaly was observed in the region. The microcephaly outbreak cause was unknown and rumors pointing to various potential causes arose. Since we were unaware at the time if this scenario would attract the interest of the broader scientific community, due to the neglected regions associated and as often happens with many others health conditions related to infectious diseases in Latin America...
September 6, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28874014/updated-reported-distribution-of-aedes-stegomyia-aegypti-and-aedes-stegomyia-albopictus-diptera-culicidae-in-the-united-states-1995-2016
#4
Micah B Hahn, Lars Eisen, Janet McAllister, Harry M Savage, John-Paul Mutebi, Rebecca J Eisen
Aedes (Stegomyia) aegypti (L.) and Aedes (Stegomyia) albopictus (Skuse) are potential vectors of Zika, dengue, and chikungunya viruses in the United States. A Zika virus outbreak in Florida in the summer of 2016, driven by Ae. aegypti and resulting in > 200 locally acquired cases of human illness, underscored the need for up-to-date information on the geographic distribution of Ae. aegypti and Ae. albopictus in the United States. In early 2016, we conducted a survey and literature review to compile county records for presence of Ae...
September 1, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28872112/fat-body-organ-culture-system-in-aedes-aegypti-a-vector-of-zika-virus
#5
Hae-Na Chung, Stacy D Rodriguez, Victoria K Carpenter, Julia Vulcan, C Donovan Bailey, Madhugiri Nageswara-Rao, Yiyi Li, Geoffrey M Attardo, Immo A Hansen
The insect fat body plays a central role in insect metabolism and nutrient storage, mirroring functions of the liver and fat tissue in vertebrates. Insect fat body tissue is usually distributed throughout the insect body. However, it is often concentrated in the abdomen and attached to the abdominal body wall. The mosquito fat body is the sole source of yolk proteins, which are critical for egg production. Therefore, the in vitro culture of mosquito fat body tissues represents an important system for the study of mosquito physiology, metabolism, and, ultimately, egg production...
August 19, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28859086/dengue-west-nile-virus-chikungunya-zika-and-now-mayaro
#6
EDITORIAL
Peter J Hotez, Kristy O Murray
No abstract text is available yet for this article.
August 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28855386/human-movement-cooperation-and-the-effectiveness-of-coordinated-vector-control-strategies
#7
Chris M Stone, Samantha R Schwab, Dina M Fonseca, Nina H Fefferman
Vector-borne disease transmission is often typified by highly focal transmission and influenced by movement of hosts and vectors across different scales. The ecological and environmental conditions (including those created by humans through vector control programmes) that result in metapopulation dynamics remain poorly understood. The development of control strategies that would most effectively limit outbreaks given such dynamics is particularly urgent given the recent epidemics of dengue, chikungunya and Zika viruses...
August 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28854116/first-data-on-resistance-to-pyrethroids-in-wild-populations-of-aedes-albopictus-from-spain
#8
Mikel Bengoa, Roger Eritja, Sarah Delacour, Miguel Ángel Miranda, Antonio Sureda, Javier Lucientes
The invasive mosquito, Aedes albopictus, found in Spain since 2004, is a competent vector of yellow fever, Zika, dengue, and chikungunya viruses among other diseases. Although controversial, the use of adulticiding is a relevant tool for vector control and could be crucial for the management of any possible outbreak of imported diseases. We present the 1st study in Spain on the susceptibility of field populations from Barcelona, Peñíscola, Castellón, and Mallorca of Ae. albopictus to several pyrethroids using either bioassays under the World Health Organization methodology and biochemical tests...
September 2017: Journal of the American Mosquito Control Association
https://www.readbyqxmd.com/read/28854113/a-statewide-survey-for-container-breeding-mosquitoes-in-mississippi
#9
Jerome Goddard, Gail M Moraru, Sarah J Mcinnis, J Santos Portugal, Donald A Yee, J Hunter Deerman, Wendy C Varnado
Container-breeding mosquitoes are important in public health due to outbreaks of Zika, chikungunya, and dengue viruses. This paper documents the distribution of container-breeding mosquito species in Mississippi, with special emphasis on the genus Aedes. Five sites in each of the 82 Mississippi counties were sampled monthly between May 1 and August 31, 2016, and 50,109 mosquitoes in 14 species were collected. The most prevalent and widely distributed species found was Ae. albopictus, being found in all 82 counties, especially during July...
September 2017: Journal of the American Mosquito Control Association
https://www.readbyqxmd.com/read/28854106/mosquito-vector-biology-and-control-in-latin-america-a-27th-symposium
#10
Lee W Cohnstaedt, Catalina Alfonso-Parra, Ildefonso Fernandez-Salas
The 27th Annual Latin American Symposium presented by the American Mosquito Control Association (AMCA) was held as part of the 83rd Annual Meeting of the AMCA in San Diego, CA, in February 2017. The Latin American Symposia promote the participation of vector control specialists, public health workers, and academicians from Latin America and the sharing of data between continents. Generally, presentations are in Spanish and simultaneously translated in English, although the majority of PowerPoint slides are in English so all meeting attendees can understand the content...
September 2017: Journal of the American Mosquito Control Association
https://www.readbyqxmd.com/read/28852982/toxicological-effects-of-chemical-constituents-from-piper-against-the-environmental-burden-aedes-aegypti-liston-and-their-impact-on-non-target-toxicity-evaluation-against-biomonitoring-aquatic-insects
#11
Prabhakaran Vasantha-Srinivasan, Annamalai Thanigaivel, Edward-Sam Edwin, Athirstam Ponsankar, Sengottayan Senthil-Nathan, Selvaraj Selin-Rani, Kandaswamy Kalaivani, Wayne B Hunter, Veeramuthu Duraipandiyan, Naif Abdullah Al-Dhabi
Dengue is the most rapidly spreading mosquito-borne viral disease in the world. The mosquito, Aedes aegypti, also spreads Yellow fever, Chikungunya, and Zika virus. As the primary vector for dengue, Ae. aegypti now occurs in over 20 countries and is a serious concern with reports of increasing insecticide resistance. Developing new treatments to manage mosquitoes are needed. Formulation of crude volatile oil from Piper betle leaves (Pb-CVO) was evaluated as a potential treatment which showed larvicidal, ovipositional, and repellency effects...
August 29, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28846489/zika-chikungunya-and-other-emerging-vector-borne-viral-diseases
#12
Scott C Weaver, Caroline Charlier, Nikos Vasilakis, Marc Lecuit
Arthropod-borne viruses (arboviruses) have a long history of emerging to infect humans, but during recent decades, they have been spreading more widely and affecting larger populations. This is due to several factors, including increased air travel and uncontrolled mosquito vector populations. Emergence can involve simple spillover from enzootic (wildlife) cycles, as in the case of West Nile virus accompanying geographic expansion into the Americas; secondary amplification in domesticated animals, as seen with Japanese encephalitis, Venezuelan equine encephalitis, and Rift Valley fever viruses; and urbanization, in which humans become the amplification hosts and peridomestic mosquitoes, mainly Aedes aegypti, mediate human-to-human transmission...
August 28, 2017: Annual Review of Medicine
https://www.readbyqxmd.com/read/28835479/variable-sensitivity-in-molecular-detection-of-zika-virus-in-european-expert-laboratories-external-quality-assessment-november-2016
#13
Remi Charrel, Ramona Mögling, Suzan Pas, Anna Papa, Cecile Baronti, Marion Koopmans, Hervé Zeller, Isabelle LeParc-Goffart, Chantal B Reusken
Background: Zika virus (ZIKV) infections are a significant public health concern. A high capability for ZIKV detection is an absolute requirement for adequate preparedness and response strategies and individual patient care.Objectives: To assess and improve the capability of European expert laboratories for ZIKV molecular testing through an External Quality Assessment scheme.Study design: Laboratories were provided with a panel of 12 samples which included negative samples, samples containing African or Asian lineage ZIKV at variable concentrations (10(3) to 10(9) copies/ml) and samples containing dengue virus, yellow fever virus or chikungunya virus...
August 23, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28831630/hands-free-smartphone-based-diagnostics-for-simultaneous-detection-of-zika-chikungunya-and-dengue-at-point-of-care
#14
A Ganguli, A Ornob, H Yu, G L Damhorst, W Chen, F Sun, A Bhuiya, B T Cunningham, R Bashir
Infectious diseases remain the world's top contributors to death and disability, and, with recent outbreaks of Zika virus infections there has been an urgency for simple, sensitive and easily translatable point-of-care tests. Here we demonstrate a novel point-of-care platform to diagnose infectious diseases from whole blood samples. A microfluidic platform performs minimal sample processing in a user-friendly diagnostics card followed by real-time reverse-transcription loop-mediated isothermal amplification (RT-LAMP) on the same card with pre-dried primers specific to viral targets...
August 22, 2017: Biomedical Microdevices
https://www.readbyqxmd.com/read/28830053/the-quantitative-structure-insecticidal-activity-relationships-from-plant-derived-compounds-against-chikungunya-and-zika-aedes-aegypti-diptera-culicidae-vector
#15
Laura M Saavedra, Gustavo P Romanelli, Ciro E Rozo, Pablo R Duchowicz
The insecticidal activity of a series of 62 plant derived molecules against the chikungunya, dengue and zika vector, the Aedes aegypti (Diptera:Culicidae) mosquito, is subjected to a Quantitative Structure-Activity Relationships (QSAR) analysis. The Replacement Method (RM) variable subset selection technique based on Multivariable Linear Regression (MLR) proves to be successful for exploring 4885 molecular descriptors calculated with Dragon 6. The predictive capability of the obtained models is confirmed through an external test set of compounds, Leave-One-Out (LOO) cross-validation and Y-Randomization...
August 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28829414/maintaining-aedes-aegypti-mosquitoes-infected-with-wolbachia
#16
Perran A Ross, Jason K Axford, Kelly M Richardson, Nancy M Endersby-Harshman, Ary A Hoffmann
Aedes aegypti mosquitoes experimentally infected with Wolbachia are being utilized in programs to control the spread of arboviruses such as dengue, chikungunya and Zika. Wolbachia-infected mosquitoes can be released into the field to either reduce population sizes through incompatible matings or to transform populations with mosquitoes that are refractory to virus transmission. For these strategies to succeed, the mosquitoes released into the field from the laboratory must be competitive with native mosquitoes...
August 14, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28821226/comprehensive-proteome-profiling-in-aedes-albopictus-to-decipher-wolbachia-arbovirus-interference-phenomenon
#17
Yoann Saucereau, Claire Valiente Moro, Cindy Dieryckx, Jean-William Dupuy, Florence-Hélène Tran, Vincent Girard, Patrick Potier, Patrick Mavingui
BACKGROUND: Aedes albopictus is a vector of arboviruses that cause severe diseases in humans such as Chikungunya, Dengue and Zika fevers. The vector competence of Ae. albopictus varies depending on the mosquito population involved and the virus transmitted. Wolbachia infection status in believed to be among key elements that determine viral transmission efficiency. Little is known about the cellular functions mobilized in Ae. albopictus during co-infection by Wolbachia and a given arbovirus...
August 18, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28820690/scaling-up-of-an-innovative-intervention-to-reduce-risk-of-dengue-chikungunya-and-zika-transmission-in-uruguay-in-the-framework-of-an-intersectoral-approach-with-and-without-community-participation
#18
César Basso, Elsa García da Rosa, Rosario Lairihoy, Ruben M Caffera, Ingrid Roche, Cristina González, Ricardo da Rosa, Alexis Gularte, Eduardo Alfonso-Sierra, Max Petzold, Axel Kroeger, Johannes Sommerfeld
To contribute to the prevention of dengue, chikungunya, and Zika, a process of scaling up an innovative intervention to reduce Aedes aegypti habitats, was carried out in the city of Salto (Uruguay) based on a transdisciplinary analysis of the eco-bio-social determinants. The intervention in one-third of the city included the distributions of plastic bags for all households to collect all discarded water containers that were recollected by the Ministry of Health and the Municipality vector control services. The results were evaluated in 20 randomly assigned clusters of 100 households each, in the intervention and control arm...
August 7, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28806786/an-economic-evaluation-of-vector-control-in-the-age-of-a-dengue-vaccine
#19
Christopher Fitzpatrick, Alexander Haines, Mathieu Bangert, Andrew Farlow, Janet Hemingway, Raman Velayudhan
INTRODUCTION: Dengue is a rapidly emerging vector-borne Neglected Tropical Disease, with a 30-fold increase in the number of cases reported since 1960. The economic cost of the illness is measured in the billions of dollars annually. Environmental change and unplanned urbanization are conspiring to raise the health and economic cost even further beyond the reach of health systems and households. The health-sector response has depended in large part on control of the Aedes aegypti and Ae...
August 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28796789/multiple-introductions-of-the-dengue-vector-aedes-aegypti-into-california
#20
Evlyn Pless, Andrea Gloria-Soria, Benjamin R Evans, Vicki Kramer, Bethany G Bolling, Walter J Tabachnick, Jeffrey R Powell
The yellow fever mosquito Aedes aegypti inhabits much of the tropical and subtropical world and is a primary vector of dengue, Zika, and chikungunya viruses. Breeding populations of A. aegypti were first reported in California (CA) in 2013. Initial genetic analyses using 12 microsatellites on collections from Northern CA in 2013 indicated the South Central US region as the likely source of the introduction. We expanded genetic analyses of CA A. aegypti by: (a) examining additional Northern CA samples and including samples from Southern CA, (b) including more southern US populations for comparison, and (c) genotyping a subset of samples at 15,698 SNPs...
August 2017: PLoS Neglected Tropical Diseases
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