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https://www.readbyqxmd.com/read/29782922/dengue-chikungunya-and-zika-infections-imported-to-paris-between-2009-and-2016-characteristics-and-correlation-with-outbreaks-in-the-french-overseas-territories-of-guadeloupe-and-martinique
#1
Victor Vasquez, Elie Haddad, Alice Perignon, Stéphane Jaureguiberry, Ségolène Brichler, Isabelle Leparc-Goffart, Eric Caumes
BACKGROUND: Dengue (DV), chikungunya (CV) and Zika virus (ZV) infections are rapidly expanding across countries and diagnosed in returned travelers who represent epidemiological sentinels. French Territories of America (FTA) such as Guadeloupe and Martinique are highly touristic places and have experienced three consecutive outbreaks by such viruses in the last decade. OBJECTIVE: We evaluated how ill returned travelers could be deemed as epidemiological sentinels for these three expanding arboviral diseases during eight consecutive years...
May 18, 2018: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29778186/identification-of-antigenic-epitopes-of-monoclonal-antibodies-against-the-vp2-protein-of-the-25-serotype-of-bluetongue-virus
#2
Shuangyu Xie, Yiming Shi, Ruyue Gong, Wen Cui, Yanping Jiang, Min Liu, Li Wang, Han Zhou, Xinyuan Qiao, Yijing Li, Yigang Xu, Lijie Tang
Serious outbreaks of bluetongue, an arbovirus of domestic and wild ruminants caused by bluetongue virus serotypes (BTV), have occurred around the world. More than 27 distinct serotypes are recognized throughout the world. A new virus, BTV-25 (Toggenburg orbivirus [TOV]), was first detected in Switzerland, and has not yet been found in China. VP2 is an important outer shell protein that defines BTV serotypes and is, therefore, an ideal target antigen for serotype identification. To produce a monoclonal antibody against VP2 of BTV-25, the segment 2 gene was divided into three segments, cloned into pET-28a (+) and pMAL-c5X vectors, and the protein was expressed in E...
June 2018: Veterinary Microbiology
https://www.readbyqxmd.com/read/29776384/competence-of-mosquitoes-native-to-the-united-kingdom-to-support-replication-and-transmission-of-rift-valley-fever-virus
#3
Sarah Lumley, Luis M Hernández-Triana, Daniel L Horton, Maria Del Mar Fernández de Marco, Jolyon M Medlock, Roger Hewson, Anthony R Fooks, Nicholas Johnson
BACKGROUND: Rift Valley fever phlebovirus (RVFV) is a mosquito-borne arbovirus causing severe disease in humans and livestock. It is endemic in Africa and spread to the Arabian Peninsula in 2000 raising concerns it could emerge in Europe. The ability of temperate mosquitoes from the United Kingdom (UK) to support replication and transmission of RVFV is unknown. METHODS: In this study, two colonised lines of Culex pipiens, wild-caught Aedes detritus and Ae. rusticus from the UK were infected with pathogenic strains of RVFV to assess their vector competence...
May 18, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29774861/use-of-bead-based-serologic-assay-to-evaluate-chikungunya-virus-epidemic-haiti
#4
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/29773774/us-and-cuban-scientists-forge-collaboration-on-arbovirus-research
#5
Jorge Pérez-Ávila, Maria G Guzmán-Tirado, Jorge Fraga-Nodarse, Gray Handley, James Meegan, Jose L Pelegrino-Martínez de la Cotera, Anthony S Fauci
After December 17, 2014, when the US and Cuban governments announced their intent to restore relations, the two countries participated in various exchange activities in an effort to encourage cooperation in public health, health research and biomedical sciences. The conference entitled Exploring Opportunities for Arbovirus Research Collaboration, hosted at Havana's Hotel Nacional, was part of these efforts and was the first major US-Cuban scientific conference in over 50 years. Its purpose was to share information about current arbovirus research and recent findings, and to explore opportunities for future joint research...
April 2018: MEDICC Review
https://www.readbyqxmd.com/read/29773771/bridging-the-divide-us-and-cuban-scientists-speak-up
#6
Gail Reed
This roundtable began with world-renowned US and Cuban experts in arboviruses (particularly those transmitted by mosquitoes) but was quickly transformed with the participation of globally recognized scientists in other fields. All have contributed and continue to contribute to the often frustrating efforts to advance bilateral health cooperation, for the benefit of the USA, Cuba and the world. Each from their own vantage point argues why such cooperation can release potential to create scientific synergies capable of addressing some of the most perplexing and urgent global health problems...
April 2018: MEDICC Review
https://www.readbyqxmd.com/read/29771946/in-vitro-comparison-of-three-common-essential-oils-mosquito-repellents-as-inhibitors-of-the-ross-river-virus
#7
Miora Ralambondrainy, Essia Belarbi, Wildriss Viranaicken, Renata Baranauskienė, Petras Rimantas Venskutonis, Philippe Desprès, Pierre Roques, Chaker El Kalamouni, Jimmy Sélambarom
BACKGROUND: The essential oils of Cymbopogon citratus (CC), Pelargonium graveolens (PG) and Vetiveria zizanioides (VZ) are commonly used topically to prevent mosquito bites and thus the risk of infection by their vectored pathogens such as arboviruses. However, since mosquito bites are not fully prevented, the effect of these products on the level of viral infection remains unknown. OBJECTIVES: To evaluate in vitro the essentials oils from Reunion Island against one archetypal arbovirus, the Ross River virus (RRV), and investigate the viral cycle step that was impaired by these oils...
2018: PloS One
https://www.readbyqxmd.com/read/29769105/ornamental-bromeliads-of-miami-dade-county-florida-are-important-breeding-sites-for-aedes-aegypti-diptera-culicidae
#8
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/29764954/survey-of-uk-horse-owners-knowledge-of-equine-arboviruses-and-disease-vectors
#9
Gail Elaine Chapman, Matthew Baylis, Debra C Archer
Increased globalisation and climate change have led to concern about the increasing risk of arthropod-borne virus (arbovirus) outbreaks globally. An outbreak of equine arboviral disease in northern Europe could impact significantly on equine welfare, and result in economic losses. Early identification of arboviral disease by horse owners may help limit disease spread. In order to determine what horse owners understand about arboviral diseases of horses and their vectors, the authors undertook an open, cross-sectional online survey of UK horse owners...
May 15, 2018: Veterinary Record
https://www.readbyqxmd.com/read/29763445/pyrethroid-insecticides-maintain-repellent-effect-on-knock-down-resistant-populations-of-aedes-aegypti-mosquitoes
#10
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/29761765/arbovirus-surveillance-near-the-mexico-u-s-border-isolation-and-sequence-analysis-of-chikungunya-virus-from-patients-with-dengue-like-symptoms-in-reynosa-tamaulipas
#11
S Viridiana Laredo-Tiscareño, Carlos Machain-Williams, Mario A Rodríguez-Pérez, Javier A Garza-Hernandez, Gloria L Doria-Cobos, Rosa C Cetina-Trejo, Lucio A Bacab-Cab, Chandra S Tangudu, Jermilia Charles, Erick J De Luna-Santillana, Julian E Garcia-Rejon, Bradley J Blitvich
A total of 1,090 residents of the city of Reynosa, Tamaulipas, on the Mexico-U.S. border presented at hospitals and clinics of the Secretariat of Health, Mexico, in 2015 with symptoms characteristic of dengue. Dengue virus (DENV) antigen was detected by enzyme-linked immunosorbent assay in acute sera from 134 (12.3%) patients. Sera from select patients ( N = 34) were also tested for chikungunya virus (CHIKV) RNA by quantitative reverse transcription-polymerase chain reaction. Thirteen (38.2%) patients, including five DENV antigen-positive patients, were positive...
May 14, 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29756406/interspecific-network-centrality-host-range-and-early-life-development-are-associated-with-wildlife-hosts-of-rift-valley-fever-virus
#12
M G Walsh, S M Mor
Rift Valley fever virus (RVFV) is responsible for a substantive disease burden in pastoralist communities and the agricultural sector in the African continent and Arabian Peninsula. Enzootic, epizootic and zoonotic RVFV transmission dynamics remain ill-defined, particularly due to a poor understanding of the role of mammalian hosts in the epidemiology and infection ecology of this arbovirus. Using a piecewise structural equation model, this study sought to identify associations between biological and ecological characteristics of mammalian species and documented RVFV infection to highlight species-level traits that may influence wildlife host status...
May 13, 2018: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/29751761/evaluation-of-an-immunochromatography-rapid-diagnosis-kit-for-detection-of-chikungunya-virus-antigen-in-india-a-dengue-endemic-country
#13
Jaspreet Jain, Tamaki Okabayashi, Navjot Kaur, Emi Nakayama, Tatsuo Shioda, Rajni Gaind, Takeshi Kurosu, Sujatha Sunil
BACKGROUND: Chikungunya virus (CHIKV) and dengue virus (DENV) are arboviruses that share the same Aedes mosquito vector, and there is much overlap in endemic areas. In India, co-infection with both viruses is often reported. Clinical manifestations of Chikungunya fever is often confused with dengue fever because clinical symptoms of both infections are similar. It is, therefore, difficult to differentiate from those of other febrile illnesses, especially dengue fever. We previously developed a CHIKV antigen detection immunochromatography (IC) rapid diagnosis kit [1]...
May 11, 2018: Virology Journal
https://www.readbyqxmd.com/read/29748457/distribution-and-larval-breeding-habitats-of-aedes-mosquito-species-in-residential-areas-of-northwest-ethiopia
#14
Getachew Ferede Endalew, Moges Tiruneh, Ebba Abate, Wondmeneh Jemberie, Yitayih Wondimeneh, Demekech Damtie, Belay Tessema
Objectives: Aedes mosquito is a vector for transmitting many arboviruses. Knowledge of this vector breeding habitat is vital for implementing appropriate interventions. Thus, this study was aimed to determine the breeding habitats and presence of Aedes mosquito species in the study areas. Methods: House to house cross- sectional survey of Aedes mosquito breeding habitats was carried out in Metema and Humera, Ethiopia, in August 2017. All available water-holding containers present in and around the houses were inspected for the presence of immature stages of Aedes mosquitoes, and they were collected and reared to the adult stage for species identification...
April 23, 2018: Epidemiology and Health
https://www.readbyqxmd.com/read/29743363/comparative-characterization-of-the-sindbis-virus-proteome-from-mammalian-and-invertebrate-hosts-identifies-nsp2-as-a-component-of-the-virus-nucleocapsid-and-sorting-nexin-5-as-a-significant-host-factor-for-alphavirus-replication
#15
Ryan Schuchman, Andy Kilianski, Amanda Piper, Ricardo Vancini, José M C Ribeiro, Thomas R Sprague, Farooq Nasar, Gabrielle Boyd, Raquel Hernandez, Trevor Glaros
Recent advances in mass spectrometry methods and instrumentation now allow for more accurate identification of proteins in low abundance. This technology was applied to Sindbis virus, the prototypical alphavirus to investigate the viral proteome. To determine if host proteins are specifically packaged into alphavirus virions, Sindbis virus (SINV) was grown in multiple host cells representing vertebrate and mosquito hosts and total protein content of purified virions was determined. This analysis identified host factors not previously associated with alphavirus entry, replication, or egress...
May 9, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29740962/identification-of-broad-spectrum-dengue-zika-virus-replication-inhibitors-by-functionalization-of-quinoline-and-2-6-diaminopurine-scaffolds
#16
Suzanne J F Kaptein, Paolo Vincetti, Emmanuele Crespan, Jorge I Armijos-Rivera, Gabriele Costantino, Giovanni Maga, Johan Neyts, Marco Radi
Social and demographic changes over the past 50 years resulted in important outbreaks of arboviruses such as dengue virus (DENV) and Zika virus (ZIKV) all over the world. Despite such potential threat, no approved drugs or fully protective vaccines are available to counteract DENV and ZIKV spreading. The development of "broad spectrum" antivirals (BSAs) targeting common components of multiple viruses, can be a more effective strategy to limit the rapid rise of emerging viral pathogens than the classic "one-bug/one-drug" approach...
May 9, 2018: ChemMedChem
https://www.readbyqxmd.com/read/29737271/human-and-equine-infection-with-alphaviruses-and-flaviviruses-in-panam%C3%A3-during-2010-a-cross-sectional-study-of-household-contacts-during-an-encephalitis-outbreak
#17
Jean-Paul Carrera, Karoun H Bagamian, Amelia P Travassos da Rosa, Eryu Wang, Davis Beltran, Nathan D Gundaker, Blas Armien, Gianfranco Arroyo, Néstor Sosa, Juan Miguel Pascale, Anayansi Valderrama, Robert B Tesh, Amy Y Vittor, Scott C Weaver
Members of the genera Alphavirus (family Togaviridae ) and Flavivirus (family Flaviridae ) are important zoonotic human and equine etiologic agents of neurologic diseases in the New World. In 2010, an outbreak of Madariaga virus (MADV; formerly eastern equine encephalitis virus) and Venezuelan equine encephalitis virus (VEEV) infections was reported in eastern Panamá. We further characterized the epidemiology of the outbreak by studying household contacts of confirmed human cases and equine cases with neurological disease signs...
May 7, 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29733254/antibodies-against-chikungunya-in-northern-mozambique-during-dengue-outbreak-2014
#18
Argentina Muianga, Gabriela Pinto, Marilia Massangaie, Sadia Ali, John Oludele, Almiro Tivane, Kerstin I Falk, Nina Lagerqvist, Eduardo S Gudo
An outbreak of dengue and high densities of Aedes aegypti were reported in 2014 in northern Mozambique, suggesting an increased risk for other arboviruses such as chikungunya virus (CHIKV) in this region. The aim of this study was to investigate the occurrence of CHIKV during an outbreak of dengue virus (DENV) in Pemba city in northern Mozambique in 2014. Febrile patients (n = 146) seeking medical attention at the Pemba Provincial Hospital between March and April 2014 were enrolled in this study. Blood samples from each participant were tested for chikungunya and DENV RNA, IgM and IgG antibodies using PCR and ELISA, respectively...
May 7, 2018: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/29729282/genetic-analysis-of-aedes-albopictus-diptera-culicidae-reveals-a-deep-divergence-in-the-original-regions
#19
Zhang Ruiling, Liu Tongkai, Huang Zhendong, Zhuang Guifen, Ma Dezhen, Zhangzhong
Aedes albopictus has been described as one of the 100 worst invasive species in the world. This mosquito originated from southeastern Asia and currently has a widespread presence in every continent except Antarctica. The rapid global expansion of Ae. albopictus has increased public health concerns about arbovirus-related disease threats. Adaptation, adaption to novel areas is a biological challenge for invasive species, and the underlying processes can be studied at the molecular level. In this study, genetic analysis was performed using mitochondrial gene NADH dehydrogenase subunit 5 (ND5), based on both native and invasive populations...
May 2, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29727611/improving-the-prediction-of-arbovirus-outbreaks-a-comparison-of-climate-driven-models-for-west-nile-virus-in-an-endemic-region-of-the-united-states
#20
Justin K Davis, Geoffrey P Vincent, Michael B Hildreth, Lon Kightlinger, Michael C Wimberly
Models that forecast the timing and location of human arboviral disease have the potential to make mosquito control and disease prevention more effective. A common approach is to use statistical time series models that predict disease cases as a lagged function of environmental variables. However, the simplifying assumptions required for standard modeling approaches may not capture important aspects of complex, non-linear transmission cycles. Here, we compared a set of alternative models of human West Nile virus (WNV) in 2004-2017 in South Dakota, USA...
May 1, 2018: Acta Tropica
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