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Arbovirus outbreaks

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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/29764954/survey-of-uk-horse-owners-knowledge-of-equine-arboviruses-and-disease-vectors
#3
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/29740962/identification-of-broad-spectrum-dengue-zika-virus-replication-inhibitors-by-functionalization-of-quinoline-and-2-6-diaminopurine-scaffolds
#4
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
#5
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
#6
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/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
#7
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
https://www.readbyqxmd.com/read/29720714/wolbachia-significantly-impacts-the-vector-competence-of-aedes-aegypti-for-mayaro-virus
#8
Thiago Nunes Pereira, Marcele Neves Rocha, Pedro Henrique Ferreira Sucupira, Fabiano Duarte Carvalho, Luciano Andrade Moreira
Wolbachia, an intracellular endosymbiont present in up to 70% of all insect species, has been suggested as a sustainable strategy for the control of arboviruses such as Dengue, Zika and Chikungunya. As Mayaro virus outbreaks have also been reported in Latin American countries, the objective of this study was to evaluate the vector competence of Brazilian field-collected Ae. aegypti and the impact of Wolbachia (wMel strain) upon this virus. Our in vitro studies with Aag2 cells showed that Mayaro virus can rapidly multiply, whereas in wMel-infected Aag2 cells, viral growth was significantly impaired...
May 2, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29712956/parallel-evolution-of-vgsc-mutations-at-domains-is6-iis6-and-iiis6-in-pyrethroid-resistant-aedes-aegypti-from-mexico
#9
Karla Saavedra-Rodriguez, Farah Vera Maloof, Corey L Campbell, Julian Garcia-Rejon, Audrey Lenhart, Patricia Penilla, Americo Rodriguez, Arturo Acero Sandoval, Adriana E Flores, Gustavo Ponce, Saul Lozano, William C Black
Aedes aegypti is the primary urban mosquito vector of viruses causing dengue, Zika and chikungunya fevers -for which vaccines and effective pharmaceuticals are still lacking. Current strategies to suppress arbovirus outbreaks include removal of larval-breeding sites and insecticide treatment of larval and adult populations. Insecticidal control of Ae. aegypti is challenging, due to a recent rapid global increase in knockdown-resistance (kdr) to pyrethroid insecticides. Widespread, heavy use of pyrethroid space-sprays has created an immense selection pressure for kdr, which is primarily under the control of the voltage-gated sodium channel gene (vgsc)...
April 30, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29698814/ocular-abnormalities-in-congenital-zika-syndrome-are-the-ophthalmoscopic-findings-the-top-of-the-iceberg
#10
REVIEW
João Rafael de Oliveira Dias, Camila V Ventura, Bruno de Paula Freitas, Juliana Prazeres, Liana O Ventura, Vasco Bravo-Filho, Tomas Aleman, Albert Icksang Ko, Andréa Zin, Rubens Belfort, Mauricio Maia
Zika virus (ZIKV) is an arbovirus mainly transmitted to humans by mosquitoes from Aedes genus. Other ways of transmission include the perinatal and sexual routes, blood transfusion, and laboratory exposure. Although the first human cases were registered in 1952 in African countries, outbreaks were only reported since 2007, when entire Pacific islands were affected. In March 2015, the first cases of ZIKV acute infection were notified in Brazil and, to date, 48 countries and territories in the Americas have confirmed local mosquito-borne transmission of ZIKV...
April 23, 2018: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/29694603/report-of-east-central-south-african-chikungunya-virus-genotype-during-the-2016-outbreak-in-the-alagoas-state-brazil
#11
Eloiza Lopes de Lira Tanabe, Ithallo Sathio Bessoni Tanabe, Elane Conceição Dos Santos, Juliana Paula da Silva Marques, Alessandra Abel Borges, Magliones Carneiro de Lima, Letícia Anderson, Ênio José Bassi
Chikungunya virus (CHIKV) causes a self-limiting disease characterized by the onset of fever, skin rash and persistent arthralgia. In the last decade, it has emerged as a serious public health problem causing several outbreaks around the world. Here, we report the CHIKV genotype characterization during the 2016 CHIKV outbreak in Alagoas State, Brazil. Partial E1 sequence from CHIKV-positive samples coming from different cities of Alagoas were submitted to DNA sequencing followed by phylogenetic analysis thus characterizing the virus genotype...
2018: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/29694294/characterization-of-a-western-pacific-zika-virus-strain-in-australian-aedes-aegypti
#12
Sonja Hall-Mendelin, Alyssa T Pyke, Peter R Moore, Scott A Ritchie, Frederick A J Moore, Andrew F van den Hurk
Zika virus (ZIKV) is a globally emerging arbovirus responsible for widespread epidemics in the western Pacific, the Americas, and Asia. The virus predominately circulates in urban transmission cycles between Aedes aegypti and humans. Australia is considered at risk to outbreaks of ZIKV due to the presence of A. aegypti populations in northern areas of the state of Queensland. Furthermore, close proximity to epidemic regions has led to almost 50% of imported cases reported since 2012 originating in the Pacific region...
April 25, 2018: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/29690593/the-social-and-spatial-ecology-of-dengue-presence-and-burden-during-an-outbreak-in-guayaquil-ecuador-2012
#13
Catherine A Lippi, Anna M Stewart-Ibarra, Ángel G Muñoz, Mercy J Borbor-Cordova, Raúl Mejía, Keytia Rivero, Katty Castillo, Washington B Cárdenas, Sadie J Ryan
Dengue fever, a mosquito-borne arbovirus, is a major public health concern in Ecuador. In this study, we aimed to describe the spatial distribution of dengue risk and identify local social-ecological factors associated with an outbreak of dengue fever in the city of Guayaquil, Ecuador. We examined georeferenced dengue cases ( n = 4248) and block-level census data variables to identify social-ecological risk factors associated with the presence/absence and burden of dengue in Guayaquil in 2012. Local Indicators of Spatial Association (LISA), specifically Anselin’s Local Moran’s I, and Moran’s I tests were used to locate hotspots of dengue transmission, and multimodel selection was used to identify covariates associated with dengue presence and burden at the census block level...
April 23, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29678361/chikungunya-report-from-the-task-force-on-tropical-diseases-by-the-world-federation-of-societies-of-intensive-and-critical-care-medicine
#14
Pravin Amin, Gisele Sampaio Silva, Jorge Hidalgo, Juan Ignacio Silesky Jiménez, Dilip R Karnad, Guy A Richards
Chikungunya is an arbovirus that is transmitted by the Aedes mosquito causing a febrile illness with periodic outbreaks in large parts of the world. In the last decade it has become a public health concern in a host of countries and has affected international tourists. In the vast majority of cases Chikungunya presents as an acute febrile illness, associated with rash, headache, myalgia and debilitating arthralgia or even polyarthritis. A small proportion of patients present atypically with nervous, ocular, renal, myocardial, respiratory and renal system involvement and may require ICU management...
April 7, 2018: Journal of Critical Care
https://www.readbyqxmd.com/read/29672511/vector-competence-of-italian-aedes-albopictus-populations-for-the-chikungunya-virus-e1-226v
#15
Francesco Severini, Daniela Boccolini, Claudia Fortuna, Marco Di Luca, Luciano Toma, Antonello Amendola, Eleonora Benedetti, Giada Minelli, Roberto Romi, Giulietta Venturi, Giovanni Rezza, Maria Elena Remoli
BACKGROUND: Chikungunya virus (CHIKV) is an emerging arbovirus, belonging to the Togaviridae family, Alphavirus genus, transmitted by Aedes spp. mosquitoes. Since 2007, two different CHIKV stains (E1-226A and E1-226V) have been responsible for outbreaks in European countries, including Italy, sustained by Ae. albopictus mosquitoes. FINDINGS: In this study, we assessed the susceptibility to the CHIKV E1-226V, strain responsible for the Italian 2007 outbreak, of eight Ae...
April 19, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29667206/surveillance-of-donated-blood-during-the-2016-arbovirus-outbreak-in-brazil
#16
Rohit Sharma, Larissa Costa Santos, Robson Amaro da Silva, Caroline Vieira Gonçalves, Stéfano de Melo Calado, Denisar P Santos, Josana Passos de Andrade de Melo, Rita de Cássia Pontello Rampazzo, Luciana Requião, Marco Aurélio Krieger, Manoel Barral-Netto, Camila I de Oliveira
Reports of arboviral transmission via blood transfusion may be a cause of concern among asymptomatic infected donors. This study evaluated the presence of arboviruses in donated blood products during the 2016 outbreak in Vitória da Conquista (Bahia-Brazil). Serum samples (n = 676) were screened for ZIKV, CHIKV and the four DENV serotypes using a one-step reverse transcriptase-based Real-Time Polymerase Chain Reaction (RT-PCR). No samples tested positive for any of the targets, whereas positive controls performed as expected...
April 17, 2018: Journal of Medical Virology
https://www.readbyqxmd.com/read/29663859/factors-contributing-to-and-strategies-to-combat-emerging-arboviruses
#17
David Michael Callender
Less than half a century ago infectious diseases appeared to be destined to be extinguished via as a culmination of medical triumphs. As focus turned towards combating non-communicable diseases, emerging and re-emerging diseases (EIDs) have bloomed from those ashes. Five epidemic mosquito-borne arboviruses (Yellow Fever virus (YFV), Dengue virus, West Nile virus, Chikungunya virus, and Zika virus) have emerged in the recent past. Arboviruses are of the utmost importance with respect to EIDs due to intensive growth of globalisation, arthropod urban fitness/adaption, and environmental changes...
April 17, 2018: Global Public Health
https://www.readbyqxmd.com/read/29623138/clinical-serological-and-molecular-observations-from-a-case-series-study-during-the-asian-lineage-zika-virus-outbreak-in-grenada-during-2016
#18
Marco Brenciaglia, Trevor P Noël, Paul J Fields, Satesh Bidaisee, Todd E Myers, William M Nelson, Neeraja Venkateswaran, Kodumudi Venkateswaran, Nishanth Parameswaran, Avi Bahadoor, Katherine Yearwood, Veronica Mapp-Alexander, George Mitchell, A Desiree LaBeaud, Calum N L Macpherson
This paper describes the spatial and temporal distribution of cases, demographic characteristics of patients, and clinical manifestations of Zika virus (ZIKV) during the 2016 outbreak in Grenada. The first reported case was recorded in St. Andrew Parish in April, and the last reported case was seen in November, with peak transmission occurring in the last week of June, based on test results. Data were collected from a total of 514 patients, of whom 207 (40%) tested positive for ZIKV. No evidence was found that testing positive for ZIKV infection was related to age, gender, or pregnancy status...
2018: Canadian Journal of Infectious Diseases & Medical Microbiology
https://www.readbyqxmd.com/read/29617849/mosquito-saliva-the-hope-for-a-universal-arbovirus-vaccine
#19
Jessica E Manning, David M Morens, Shaden Kamhawi, Jesus G Valenzuela, Matthew Memoli
Arthropod-borne viruses (arboviruses) are taxonomically diverse causes of significant morbidity and mortality. In recent decades, important mosquito-borne viruses such as West Nile, chikungunya, dengue, and Zika have re-emerged and spread widely, in some cases pandemically, to cause serious public health emergencies. There are no licensed vaccines against most of these viruses, and vaccine development and use has been complicated by the number of different viruses to protect against, by subtype and strain variation, and by the inability to predict when and where outbreaks will occur...
March 29, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29615665/unbiased-strain-typing-of-arbovirus-directly-from-mosquitoes-using-nanopore-sequencing-a-field-forward-biosurveillance-protocol
#20
Joseph A Russell, Brittany Campos, Jennifer Stone, Erik M Blosser, Nathan Burkett-Cadena, Jonathan L Jacobs
The future of infectious disease surveillance and outbreak response is trending towards smaller hand-held solutions for point-of-need pathogen detection. Here, samples of Culex cedecei mosquitoes collected in Southern Florida, USA were tested for Venezuelan Equine Encephalitis Virus (VEEV), a previously-weaponized arthropod-borne RNA-virus capable of causing acute and fatal encephalitis in animal and human hosts. A single 20-mosquito pool tested positive for VEEV by quantitative reverse transcription polymerase chain reaction (RT-qPCR) on the Biomeme two3...
April 3, 2018: Scientific Reports
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