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https://www.readbyqxmd.com/read/29774861/use-of-bead-based-serologic-assay-to-evaluate-chikungunya-virus-epidemic-haiti
#1
Eric W Rogier, Delynn M Moss, Kimberly E Mace, Michelle Chang, Samuel E Jean, Stevan M Bullard, Patrick J Lammie, Jean Frantz Lemoine, Venkatachalam Udhayakumar
The index case of chikungunya virus (CHIKV) in Haiti was reported during early 2014; the vector, the pervasive Aedes aegypti mosquito, promoted rapid spread throughout the country. During December 2014-February 2015, we collected blood samples from 4,438 persons at 154 sites (62 urban, 92 rural) throughout Haiti and measured CHIKV IgG by using a multiplex bead assay. Overall CHIKV seroprevalence was 57.9%; differences between rural (mean 44.9%) and urban (mean 78.4%) areas were pronounced. Logistic modeling identified the urban environment as a strong predictor of CHIKV exposure (adjusted odds ratio 3...
June 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29774292/evaluation-of-phytosynthesised-silver-nanoparticles-from-leaf-extracts-of-leucas-aspera-and-hyptis-suaveolens-and-their-larvicidal-activity-against-malaria-dengue-and-filariasis-vectors
#2
Devan Elumalai, Maduraiveeran Hemavathi, Chandrasekar Vijayalakshmi Deepaa, Patheri Kunyil Kaleena
The present study deals with the green synthesis of silver nanoparticle from the aqueous leaf extracts of Leucas aspera and Hyptis suaveolens as reducing agent and to investigate the larvicidal activity of synthesized silver nanoparticles. The synthesized silver nanoparticles were characterized by Ultraviolet and visible absorption spectroscopy (UV), Fourier transform-infrared spectroscopy (FT-IR), X-ray spectroscopy (XRD), Field emission scanning electron microscope (FESEM) and High-resonance transmission electron microscopy (HRTEM) analysis...
November 2017: Parasite Epidemiology and Control
https://www.readbyqxmd.com/read/29774286/biological-control-of-anopheles-darlingi-aedes-aegypti-and-culex-quinquefasciatus-larvae-using-shrimps
#3
Willian Marinho Dourado Coelho, Juliana de Carvalho Apolinário Coêlho, Katia Denise Saraiva Bresciani, Wilma Aparecida Starke Buzetti
Mosquitoes can act as vectors of important diseases such as malaria, dengue, Zika virus, yellow fever, Chikungunya and Mayaro fever, in addition to filariasis. The use of insecticides, larvicides, bed nets and repellents, besides the use of drugs as chemoprevention and the treatment of the sick are currently the pillars of the control of these vectors. We studied the biological control against of Anopheles darlingi , Aedes aegypti and Culex quinquefasciatus larvae using shrimps of the species M. pantanalense , M...
August 2017: Parasite Epidemiology and Control
https://www.readbyqxmd.com/read/29773481/comparison-of-thermophilic-anaerobic-and-aerobic-treatment-processes-for-stabilization-of-green-and-food-wastes-and-production-of-soil-amendments
#4
Jesus D Fernandez-Bayo, Ramin Yazdani, Christopher W Simmons, Jean S VanderGheynst
The management of organic wastes is an environmental and social priority. Aerobic digestion (AED) or composting and anaerobic digestion (AD) are two organic waste management practices that produce a value-added final product. Few side-by-side comparisons of both technologies and their digestate products have been performed. The objective of this study was to compare the impact of initial feedstock properties (moisture content and/or C/N ratio) on stabilization rate by AED and AD and soil amendment characteristics of the final products...
May 14, 2018: Waste Management
https://www.readbyqxmd.com/read/29773077/aedes-vittatus-in-spain-current-distribution-barcoding-characterization-and-potential-role-as-a-vector-of-human-diseases
#5
Alazne Díez-Fernández, Josué Martínez-de la Puente, Santiago Ruiz, Rafael Gutiérrez-López, Ramón Soriguer, Jordi Figuerola
BACKGROUND: Aedes vittatus is currently found in Africa, Asia and Europe, where it acts as a vector of pathogens causing animal and human diseases (e.g. chikungunya, Zika and dengue). Like other Aedes species, Ae. vittatus is able to breed in artificial containers. The ECDC has recently highlighted the need for molecular tools (i.e. barcoding characterization) that enable Aedes species to be identified in entomological surveys. RESULTS: We sampled mosquito larvae and adults in southern Spain and used a molecular approach to amplify and sequence a fragment of the cytochrome c oxidase subunit 1 gene (barcoding region) of the mosquitoes...
May 18, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29772891/the-influence-of-urban-heat-islands-and-socioeconomic-factors-on-the-spatial-distribution-of-aedes-aegypti-larval-habitats
#6
Thiago S De Azevedo, Brian Patrick Bourke, Rafael Piovezan, Maria Anice M Sallum
We addressed the potential associations among the temporal and spatial distribution of larval habitats of Aedes (Stegomyia) aegypti, the presence of urban heat islands and socioeconomic factors. Data on larval habitats were collected in Santa Bárbara d'Oeste, São Paulo, Brazil, from 2004 to 2006, and spatial and temporal variations were analysed using a wavelet-based approach. We quantified urban heat islands by calculating surface temperatures using the results of wavelet analyses and grey level transformation from Thematic Mapper images (Landsat 5)...
May 8, 2018: Geospatial Health
https://www.readbyqxmd.com/read/29772886/urban-environmental-clustering-to-assess-the-spatial-dynamics-of-aedes-aegypti-breeding-sites
#7
Guillermo Albrieu-Llinás, Manuel O Espinosa, Agustín Quaglia, Marcelo Abril, Carlos Marcelo Scavuzzo
The identification of Aedes aegypti breeding hotspots in urban areas is crucial for the rational design of control strategies against this disease vector. Remote sensing and geographic information systems offer valuable tools for mapping habitat suitability of a given area. However, predicting species occurrences by means of probability distribution maps based on transversal entomological surveys has limited utility for local authorities. The aim of the present study was to carefully examine the temporal evolution of the number of houses infested with immature stages of Ae...
May 7, 2018: Geospatial Health
https://www.readbyqxmd.com/read/29772674/encapsidated-host-factors-in-alphavirus-particles-influence-midgut-infection-of-aedes-aegypti
#8
David Mackenzie-Liu, Kevin J Sokoloski, Sarah Purdy, Richard W Hardy
Transmission of mosquito-borne viruses requires the efficient infection of both a permissive vertebrate host and a competent mosquito vector. The infectivity of Sindbis virus (SINV), the type species of the Alphavirus genus, is influenced by both the original and new host cell. We have shown that infection of vertebrate cells by SINV, chikungunya virus (CHIKV), and Ross River virus (RRV) produces two subpopulations of virus particles separable based on density. In contrast, a single population of viral particles is produced by mosquito cells...
May 16, 2018: Viruses
https://www.readbyqxmd.com/read/29771372/tracking-aedes-aegypti-diptera-culicidae-larval-behavior-across-development-effects-of-temperature-and-nutrients-on-individuals-foraging-behavior
#9
Michael H Reiskind, M Shawn Janairo
Immature mosquitoes alter their foraging behavior in response to variation in nutrients, predators, and temperature, with consequences on the adult stage where pathogens are transmitted. These patterns of behavior have not been described with respect to both developmental stage and environmental variation, nor has behavior been examined within an individual across instars. We hypothesized that individual larvae have distinct behavioral syndromes, and predict that the rank of foraging activity in the third instar will be correlated with foraging activity in the fourth instar for an individual across all conditions...
May 15, 2018: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29769652/niche-conservatism-of-aedes-albopictus-and-aedes-aegypti-two-mosquito-species-with-different-invasion-histories
#10
Sarah Cunze, Judith Kochmann, Lisa K Koch, Sven Klimpel
Biological invasions have been associated with niche changes; however, their occurrence is still debated. We assess whether climatic niches between native and non-native ranges have changed during the invasion process using two globally spread mosquitoes as model species, Aedes albopictus and Aedes aegypti. Considering the different time spans since their invasions (>300 vs. 30-40 years), niche changes were expected to be more likely for Ae. aegypti than for Ae. albopictus. We used temperature and precipitation variables as descriptors for the realized climatic niches and different niche metrics to detect niche dynamics in the native and non-native ranges...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29769105/ornamental-bromeliads-of-miami-dade-county-florida-are-important-breeding-sites-for-aedes-aegypti-diptera-culicidae
#11
André B B Wilke, Chalmers Vasquez, Paul J Mauriello, John C Beier
BACKGROUND: A major public health concern is the emergence and geographical spread of vector-borne diseases such as Zika and yellow fever. Ornamental bromeliads retaining water in their leaf axils represent potential breeding sites for mosquitoes. As the role of ornamental bromeliads in breeding Aedes aegypti in Miami-Dade County, Florida is unknown, we hypothesize that ornamental bromeliads are important breeding sites for Ae. aegypti. Our objective was to survey bromeliads in areas with high densities of adult Ae...
May 17, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29769098/wing-morphometrics-of-aedes-ochlerotatus-albifasciatus-macquart-1838-diptera-culicidae-from-different-climatic-regions-of-argentina
#12
Maximiliano J Garzón, Nicolás Schweigmann
BACKGROUND: Gene flow restrictions between populations of Aedes albifasciatus, the vector of Western equine encephalitis and Dirophilaria immitis, have been described in the central region of Argentina. Genetic and eco-physiological variations usually result in local forms reflecting the climatic regions. Mosquito wings and their different parts have ecological functions in flight and communication. Therefore, wing shape could be considered an aspect of sexual dimorphism, and its eco-physiological responses can be expressed as morphological changes induced by the environment...
May 16, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29768530/ns1-codon-usage-adaptation-to-humans-in-pandemic-zika-virus
#13
Caio César de Melo Freire, Giuseppe Palmisano, Carla T Braconi, Fernanda R Cugola, Fabiele B Russo, Patricia Cb Beltrão-Braga, Atila Iamarino, Daniel Ferreira de Lima Neto, Amadou Alpha Sall, Livia Rosa-Fernandes, Martin R Larsen, Paolo Marinho de Andrade Zanotto
BACKGROUND: Zika virus (ZIKV) was recognised as a zoonotic pathogen in Africa and southeastern Asia. Human infections were infrequently reported until 2007, when the first known epidemic occurred in Micronesia. After 2013, the Asian lineage of ZIKV spread along the Pacific Islands and Americas, causing severe outbreaks with millions of human infections. The recent human infections of ZIKV were also associated with severe complications, such as an increase in cases of Guillain-Barre syndrome and the emergence of congenital Zika syndrome...
May 10, 2018: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/29768077/strategy-to-address-private-location-cardiac-arrest-a-public-safety-survey
#14
Jennifer Blackwood, Mickey Eisenberg, Dawn Jorgenson, James Nania, Bryan Howard, Bryan Collins, Peter Connell, Tim Day, Cody Rohrbach, Thomas Rea
OBJECTIVE: Most cardiac arrests occur in the private setting where response is often delayed and outcomes are poor. We surveyed public safety personnel to determine if they would volunteer to respond into private locations and/or be equipped with a personal automated external defibrillator (AED) as part of a vetted responder program that would use smart geospatial technology. METHODS: We conducted an anonymized survey among personnel from fire-based emergency medical services (EMS) and search and rescue organizations from Washington State...
May 16, 2018: Prehospital Emergency Care
https://www.readbyqxmd.com/read/29767750/mosquitoes-diptera-culicidae-from-the-northwestern-brazilian-amazon-ara%C3%A3-%C3%A3-river
#15
Rosa Sá Gomes Hutchings, Roger William Hutchings, Isis Sá Menezes, Monique de Albuquerque Motta, Maria Anice Mureb Sallum
The mosquito fauna (Diptera: Culicidae) from two remote localities along the Araçá River, within the Municipality of Barcelos, towards the northern border of the Brazilian State of Amazonas, were sampled using CDC, Shannon, Malaise, and Suspended traps, along with net sweeping and immature collections. During June 2010, 111 collections yielded more than 23,500 mosquitoes distributed in 15 genera, representing 119 different species, together with eight morphospecies, which may represent undescribed new taxa...
May 15, 2018: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29767738/microsatellite-markers-transferability-in-culex-nigripalpus-diptera-culicidae
#16
Gabriela Cristina de Carvalho, Mauro Toledo Marrelli, André Barretto Bruno Wilke
Microsatellite loci specifically designed and optimized for secondary vectors and neglected species of mosquitoes are lacking. Cross-species transferability of microsatellite loci between close taxa has been used as a reliable option, being successfully done for Aedes taeniorhynchus Wiedemann (Diptera: Culicidae), Triatoma sordida Stål (Hemiptera: Reduviidae), and Aedes fluviatilis Lutz (Diptera: Culicidae). Nonetheless, prior to the utilization of transferred microsatellites, they must be assessed for their performance and reliability on the target species...
May 15, 2018: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29763992/development-of-an-algorithm-to-identify-pregnancy-episodes-and-related-outcomes-in-health-care-claims-databases-an-application-to-antiepileptic-drug-use-in-4-9-million-pregnant-women-in-france
#17
Pierre-Olivier Blotière, Alain Weill, Marie Dalichampt, Cécile Billionnet, Myriam Mezzarobba, Fanny Raguideau, Rosemary Dray-Spira, Mahmoud Zureik, Joël Coste, François Alla
PURPOSE: Access to claims databases provides an opportunity to study medication use and safety during pregnancy. We developed an algorithm to identify pregnancy episodes in the French health care databases and applied it to study antiepileptic drug (AED) use during pregnancy between 2007 and 2014. METHODS: The algorithm searched the French health care databases for discharge diagnoses and medical procedures indicative of completion of a pregnancy. To differentiate claims associated with separate pregnancies, an interval of at least 28 weeks was required between 2 consecutive pregnancies resulting in a birth and 6 weeks for terminations of pregnancy...
May 15, 2018: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/29763445/pyrethroid-insecticides-maintain-repellent-effect-on-knock-down-resistant-populations-of-aedes-aegypti-mosquitoes
#18
Natalie M Bowman, Kristin Akialis, Grayson Cave, Roberto Barrera, Charles S Apperson, Steven R Meshnick
Pyrethroid-treated clothing is commonly worn for protection against mosquitoes; pyrethroids are both insecticides and repellents. Pyrethroid resistance has become increasingly common in Aedes aegypti, the vector of dengue, Zika, and other arboviruses, but it is not clear whether resistance is associated with reductions in repellency. In order to determine whether long-lasting permethrin impregnated (LLPI) clothing is protective, we used Aedes aegypti from New Orleans, LA (pyrethroid-sensitive) and San Juan, PR (resistant) to measure both lethality and repellency...
2018: PloS One
https://www.readbyqxmd.com/read/29762703/aed-use-before-ems-arrival-when-survival-becomes-a-matter-of-law-and-system-in-italy-which-can-be-improved
#19
Enrico Baldi, Simone Savastano
No abstract text is available yet for this article.
May 14, 2018: European Heart Journal
https://www.readbyqxmd.com/read/29761749/effects-of-light-and-temperature-on-daily-activity-and-clock-gene-expression-in-two-mosquito-disease-vectors
#20
Gustavo B S Rivas, Rayane Teles-de-Freitas, Márcio G Pavan, José B P Lima, Alexandre A Peixoto, Rafaela Vieira Bruno
Most organisms feature an endogenous circadian clock capable of synchronization with their environment. The most well-known synchronizing agents are light and temperature. The circadian clock of mosquitoes, vectors of many pathogens, drives important behaviors related to vectoral capacity, including oviposition, host seeking, and hematophagy. Main clock gene expression, as well as locomotor activity patterns, has been identified in Aedes aegypti and Culex quinquefasciatus under artificial light-dark cycles...
June 2018: Journal of Biological Rhythms
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