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https://www.readbyqxmd.com/read/28327810/spatial-temporal-analysis-of-dengue-deaths-identifying-social-vulnerabilities
#1
Maria do Socorro da Silva, Maria Dos Remédios Freitas Carvalho Branco, José Aquino, Rejane Christine de Sousa Queiroz, Emanuele Bani, Emnielle Pinto Borges Moreira, Maria Nilza Lima Medeiros, Zulimar Márita Ribeiro Rodrigues
INTRODUCTION: Currently, dengue fever, chikungunya fever, and zika virus represent serious public health issues in Brazil, despite efforts to control the vector, the Aedes aegypti mosquito. METHODS: This was a descriptive and ecological study of dengue deaths occurring from 2002 to 2013 in São Luis, Maranhão, Brazil. Geoprocessing software was used to draw maps, linking the geo-referenced deaths with urban/social data at census tract level. RESULTS: There were 74 deaths, concentrated in areas of social vulnerability...
January 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/28327798/molecular-and-clinical-epidemiological-surveillance-of-dengue-virus-in-para%C3%A3-ba-northeast-brazil
#2
Isabel Cristina Guerra-Gomes, Bruna Macêdo Gois, Rephany Fonseca Peixoto, Camila Alves Oliveira, Bruna Leal Lima Maciel, Maria Izabel Ferreira Sarmento, Anna Stella Cysneiros Pachá, Josélio Maria Galvão Araújo, Ian Porto Gurgel Amaral, Tatjana Souza Lima Keesen
INTRODUCTION: Despite being the most prevalent arboviral disease worldwide, dengue has been neglected lately. However, recent epidemics of arboviruses such as Zika and chikungunya in locations throughout the world have alerted health authorities to these diseases. This study evaluated the incidence pattern of dengue, its clinical characteristics, and co-circulation of serotypes from 2007 to 2015 in Paraiba State, Northeast Brazil. METHODS: Data on dengue cases from 2007 to 2015 were extracted from clinical reports of the National System for Notifiable Diseases [Sistema Nacional de Agravos de Notificação (SINAN)] of Brazil provided by the Paraiba Health Department...
January 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/28321362/from-eggs-to-bites-do-ovitrap-data-provide-reliable-estimates-of-aedes-albopictus-biting-females
#3
Mattia Manica, Roberto Rosà, Alessandra Della Torre, Beniamino Caputo
BACKGROUND: Aedes albopictus is an aggressive invasive mosquito species that represents a serious health concern not only in tropical areas, but also in temperate regions due to its role as vector of arboviruses. Estimates of mosquito biting rates are essential to account for vector-human contact in models aimed to predict the risk of arbovirus autochthonous transmission and outbreaks, as well as nuisance thresholds useful for correct planning of mosquito control interventions. Methods targeting daytime and outdoor biting Ae...
2017: PeerJ
https://www.readbyqxmd.com/read/28317856/a-smartphone-based-diagnostic-platform-for-rapid-detection-of-zika-chikungunya-and-dengue-viruses
#4
Aashish Priye, Sara W Bird, Yooli K Light, Cameron S Ball, Oscar A Negrete, Robert J Meagher
Current multiplexed diagnostics for Zika, dengue, and chikungunya viruses are situated outside the intersection of affordability, high performance, and suitability for use at the point-of-care in resource-limited settings. Consequently, insufficient diagnostic capabilities are a key limitation facing current Zika outbreak management strategies. Here we demonstrate highly sensitive and specific detection of Zika, chikungunya, and dengue viruses by coupling reverse-transcription loop-mediated isothermal amplification (RT-LAMP) with our recently developed quenching of unincorporated amplification signal reporters (QUASR) technique...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28315708/2016-international-meeting-of-the-global-virus-network
#5
REVIEW
Ramesh Akkina, Heinz Ellerbrok, William Hall, Hideki Hasegawa, Yasushi Kawaguchi, Harold Kleanthous, Edward McSweegan, Natalia Mercer, Victor Romanowski, Hirofumi Sawa, Anders Vahlne
The Global Virus Network (GVN) was established in 2011 in order to strengthen research and responses to current viral causes of human disease and to prepare against new viral pandemic threats. There are now 38 GVN Centers of Excellence and 6 Affiliate laboratories in 24 countries. GVN scientists meet annually to learn about each other's current research, address collaborative priorities and plan future programs. The 2016 meeting was held from October 23-25 in Hokkaido, Japan, in partnership with the Japanese Society for Virology, the National Institute of Infectious Diseases of Japan and the Research Center for Zoonosis Control of Hokkaido University...
March 16, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28302072/imported-arboviral-infections-in-italy-july-2014-october-2015-a-national-reference-laboratory-report
#6
Claudia Fortuna, Maria Elena Remoli, Caterina Rizzo, Eleonora Benedetti, Cristiano Fiorentini, Antonino Bella, Claudio Argentini, Francesca Farchi, Concetta Castilletti, Maria Rosaria Capobianchi, Lorenzo Zammarchi, Alessandro Bartoloni, Nadia Zanchetta, Maria Rita Gismondo, Luca Ceccherini Nelli, Giustina Vitale, Franco Baldelli, Pierlanfranco D'Agaro, Giuseppe Sodano, Giovanni Rezza, Giulietta Venturi
BACKGROUND: Imported cases of infections due to Dengue (DENV) and Chikungunya (CHIKV) viruses and, more recently, Zika virus (ZIKV) are commonly reported among travelers returning from endemic regions. In areas where potentially competent vectors are present, the risk of autochthonous transmission of these vector-borne pathogens is relatively high. Laboratory surveillance is crucial to rapidly detect imported cases in order to reduce the risk of transmission. This study describes the laboratory activity performed by the National Reference Laboratory for Arboviruses (NRLA) at the Italian National Institute of Health in the period from July 2014 to October 2015...
March 16, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28278416/arboviral-diseases-and-malaria-in-australia-2013-14-annual-report-of-the-national-arbovirus-and-malaria-advisory-committee
#7
Katrina E Knope, Mike Muller, Nina Kurucz, Stephen L Doggett, Rebecca Feldman, Cheryl A Johansen, Michaela Hobby, Sonya Bennett, Stacey Lynch, Angus Sly, Bart J Currie
This report describes the epidemiology of mosquito-borne diseases of public health importance in Australia during the 2013-14 season (1 July 2013 to 30 June 2014) and includes data from human notifications, sentinel chicken, vector and virus surveillance programs. The National Notifiable Diseases Surveillance System received notifications for 8,898 cases of disease transmitted by mosquitoes during the 2013-14 season. The Australasian alphaviruses Barmah Forest virus and Ross River virus accounted for 6,372 (72%) total notifications...
September 30, 2016: Communicable Diseases Intelligence Quarterly Report
https://www.readbyqxmd.com/read/28274195/quality-control-and-data-validation-procedure-in-large-scale-quantitative-monitoring-of-mosquito-density-the-case-of-aedes-albopictus-in-emilia-romagna-region-italy
#8
Marco Carrieri, Alessandro Albieri, Sandra Urbanelli, Paola Angelini, Claudio Venturelli, Carmela Matrangolo, Romeo Bellini
The risk of local transmission of chikungunya, dengue, and Zika viruses from viremic travelers arriving from affected areas is a real possibility in southern Europe, due to the large presence of the vector Aedes albopictus. The first chikungunya outbreak in Europe occurred in the Emilia-Romagna region, Italy, in 2007, prompting the regional public health department to implement an Ae. albopictus monitoring and control plan. This paper presents the procedure developed for the quality control of the data collected by the regional ovitrap monitoring network...
March 2017: Pathogens and Global Health
https://www.readbyqxmd.com/read/28271980/mosquito-borne-diseases-and-omics-salivary-gland-proteome-of-the-female-aedes-aegypti-mosquito
#9
Rakhi Dhawan, Manish Kumar, Ajeet Kumar Mohanty, Gourav Dey, Jayshree Advani, T S Keshava Prasad, Ashwani Kumar
The female Aedes aegypti mosquito is an important vector for several tropical and subtropical diseases such as dengue, chikungunya, and Zika and yellow fever. The disease viruses infect the mosquito and subsequently spread to the salivary glands after which the viruses can be transmitted to humans with probing or feeding by the mosquito. Omics systems sciences offer the opportunity to characterize vectors and can inform disease surveillance, vector control and development of innovative diagnostics, personalized medicines, vaccines, and insecticide targets...
January 2017: Omics: a Journal of Integrative Biology
https://www.readbyqxmd.com/read/28266580/cre-lox-recombinase-mediated-cassette-exchange-for-reversible-site-specific-genomic-targeting-of-the-disease-vector-aedes-aegypti
#10
Irina Häcker, Robert A Harrell Ii, Gerrit Eichner, Kristina L Pilitt, David A O'Brochta, Alfred M Handler, Marc F Schetelig
Site-specific genome modification (SSM) is an important tool for mosquito functional genomics and comparative gene expression studies, which contribute to a better understanding of mosquito biology and are thus a key to finding new strategies to eliminate vector-borne diseases. Moreover, it allows for the creation of advanced transgenic strains for vector control programs. SSM circumvents the drawbacks of transposon-mediated transgenesis, where random transgene integration into the host genome results in insertional mutagenesis and variable position effects...
March 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28265108/-confirmed-dengue-chikungunya-and-zika-cases-during-the-period-2014-to-2016-in-barcelona-spain
#11
Roser González, Esteve Camprubí, Lidia Fernández, Joan Pau Millet, Víctor Peracho, Pilar Gorrindo, Ingrid Avellanés, Arancha Romero, Joan A Caylà
OBJECTIVE: Arbovirus infections are a group of diseases whose incidence is increasing and that entail an important problem for public health. The aim of this study was to describe detected cases of arbovirosis in Barcelona, and surveillance and control actions performed in order to reduce the risk of transmission. METHODS: Descriptive cross-sectional study of confirmed dengue, chikungunya and Zika cases in Barcelona during 2014-2016 (1st trimester). Suspected cases detected in the city were notified to the Epidemiology Department of the Barcelona Public Health Agency, where an epidemiological survey is undertaken and, if appropriate, Urban Pests Surveillance and Control Department is contacted...
March 7, 2017: Revista Española de Salud Pública
https://www.readbyqxmd.com/read/28241828/population-genomics-reveals-that-an-anthropophilic-population-of-aedes-aegypti-mosquitoes-in-west-africa-recently-gave-rise-to-american-and-asian-populations-of-this-major-disease-vector
#12
Jacob E Crawford, Joel M Alves, William J Palmer, Jonathan P Day, Massamba Sylla, Ranjan Ramasamy, Sinnathamby N Surendran, William C Black, Arnab Pain, Francis M Jiggins
BACKGROUND: The mosquito Aedes aegypti is the main vector of dengue, Zika, chikungunya and yellow fever viruses. This major disease vector is thought to have arisen when the African subspecies Ae. aegypti formosus evolved from being zoophilic and living in forest habitats into a form that specialises on humans and resides near human population centres. The resulting domestic subspecies, Ae. aegypti aegypti, is found throughout the tropics and largely blood-feeds on humans. RESULTS: To understand this transition, we have sequenced the exomes of mosquitoes collected from five populations from around the world...
February 28, 2017: BMC Biology
https://www.readbyqxmd.com/read/28226083/dengue-infection-in-the-nervous-system-lessons-learned-for-zika-and-chikungunya
#13
Marzia Puccioni-Sohler, Natalia Roveroni, Carolina Rosadas, Fernando Ferry, Jose Mauro Peralta, Amilcar Tanuri
Dengue, Zika and Chikungunya are emerging arboviruses and important causes of acute febrile disease in tropical areas. Although dengue does not represent a new condition, a geographic expansion over time has occurred with the appearance of severe neurological complications. Neglect has allowed the propagation of the vector (Aedes spp), which is also responsible for the transmission of other infections such as Zika and Chikungunya throughout the world. The increased number of infected individuals has contributed to the rise of neurological manifestations including encephalitis, myelitis, meningitis, Guillain-Barré syndrome and congenital malformations such as microcephaly...
February 2017: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/28226004/guillain-barr%C3%A3-syndrome-and-other-neurological-manifestations-possibly-related-to-zika-virus-infection-in-municipalities-from-bahia-brazil-2015
#14
Juliane Maria Alves Siqueira Malta, Alexander Vargas, Priscila Leal E Leite, Jadher Percio, Giovanini Evelim Coelho, Andréa Helena Argolo Ferraro, Tânia Maria de Oliveira Cordeiro, Jesângeli de Sousa Dias, Eduardo Saad
Objective: to describe the reported cases of Guillain-Barré Syndrome (GBS) and other neurological manifestations with a history of dengue, chikungunya or Zika virus infections, in the Metropolitan Region of Salvador and in the municipality of Feira de Santana, Brazil. Methods: this is a descriptive study with data of an investigation conducted by the epidemiological surveillance from March to August 2015; to confirm the neurological manifestations, medical diagnosis records were considered, and to prior infection, clinical and laboratory criteria were used...
January 2017: Epidemiologia e Servicos de Saude: Revista do Sistema Unico de Saude do Brasil
https://www.readbyqxmd.com/read/28214373/improved-detection-of-zika-virus-rna-in-human-and-animal-specimens-by-a-novel-highly-sensitive-and-specific-real-time-rt-pcr-assay-targeting-the-5-untranslated-region-of-zika-virus
#15
Jasper Fuk-Woo Chan, Cyril Chik-Yan Yip, Kah-Meng Tee, Zheng Zhu, Jessica Oi-Ling Tsang, Kenn Ka-Heng Chik, Terance Gi-Wai Tsang, Chris Chung-Sing Chan, Vincent Kwok-Man Poon, Siddharth Sridhar, Feifei Yin, Ivan Fan-Ngai Hung, Sandy Ka-Yee Chau, Anna Jinxia Zhang, Kwok-Hung Chan, Kwok-Yung Yuen
OBJECTIVE AND METHOD: We developed and evaluated five novel real-time RT-PCR assays targeting conserved regions in the 5'-untranslated region (5'-UTR), envelope (E'), non-structural protein 2A (NS2A), NS5, and 3'-UTR of the ZIKV genome. RESULTS: The ZIKV-5'-UTR assay exhibited the lowest in-vitro limit of detection (5-10 RNA copies/reaction and 3.0×10(-1) plaque-forming units/ml). Compared to the modified version of a widely adopted RT-PCR assay targeting the ZIKV-E gene, the ZIKV-5'-UTR assay showed better sensitivity in human clinical specimens, and representative mouse specimens, including many organs which are known to be involved in human ZIKV infection but difficult to obtain in clinical settings...
February 18, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28212349/household-dengue-prevention-interventions-expenditures-and-barriers-to-aedes-aegypti-control-in-machala-ecuador
#16
Naveed Heydari, David A Larsen, Marco Neira, Efraín Beltrán Ayala, Prissila Fernandez, Jefferson Adrian, Rosemary Rochford, Anna M Stewart-Ibarra
The Aedes aegypti mosquito is an efficient vector for the transmission of Zika, chikungunya, and dengue viruses, causing major epidemics and a significant social and economic burden throughout the tropics and subtropics. The primary means of preventing these diseases is household-level mosquito control. However, relatively little is known about the economic burden of Ae. aegypti control in resource-limited communities. We surveyed residents from 40 households in a high-risk community at the urban periphery in the city of Machala, Ecuador, on dengue perceptions, vector control interventions, household expenditures, and factors influencing purchasing decisions...
February 16, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28207332/leaking-containers-success-and-failure-in-controlling-the-mosquito-aedes-aegypti-in-brazil
#17
Ilana Löwy
In 1958, the Pan American Health Organization declared that Brazil had successfully eradicated the mosquito Aedes aegypti, responsible for the transmission of yellow fever, dengue fever, chikungunya, and Zika virus. Yet in 2016 the Brazilian minister of health described the situation of dengue fever as "catastrophic." Discussing the recent epidemic of Zika virus, which amplified the crisis produced by the persistence of dengue fever, Brazil's president declared in January 2016 that "we are in the process of losing the war against the mosquito Aedes aegypti...
April 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28199323/a-large-scale-biorational-approach-using-bacillus-thuringiensis-israeliensis-strain-am65-52-for-managing-aedes-aegypti-populations-to-prevent-dengue-chikungunya-and-zika-transmission
#18
Catherine A Pruszynski, Lawrence J Hribar, Robert Mickle, Andrea L Leal
BACKGROUND: Aedes aegypti is a container-inhabiting mosquito and a vector of dengue, chikungunya, and Zika viruses. In 2009 several cases of autochthonous dengue transmission were reported in Key West, Florida, USA prompting a comprehensive response to control A. aegypti. In Key West, larvae of this mosquito develop in containers around human habitations which can be numerous and labor intensive to find and treat. Aerial applications of larvicide covering large areas in a short time can be an efficient and economical method to control A...
2017: PloS One
https://www.readbyqxmd.com/read/28193291/meteorological-variables-and-mosquito-monitoring-are-good-predictors-for-infestation-trends-of-aedes-aegypti-the-vector-of-dengue-chikungunya-and-zika
#19
Danielle Andreza da Cruz Ferreira, Carolin Marlen Degener, Cecilia de Almeida Marques-Toledo, Maria Mercedes Bendati, Liane Oliveira Fetzer, Camila P Teixeira, Álvaro Eduardo Eiras
BACKGROUND: Aedes aegypti is an important vector for arboviroses and widely distributed throughout the world. Climatic factors can influence vector population dynamics and, consequently, disease transmission. The aim of this study was to characterize the temporal dynamics of an Ae. aegypti population and dengue cases and to investigate the relationship between meteorological variables and mosquito infestation. METHODS: We monitored and analyzed the adult female Ae...
February 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28192520/holding-back-the-tiger-successful-control-program-protects-australia-from-aedes-albopictus-expansion
#20
Mutizwa Odwell Muzari, Gregor Devine, Joseph Davis, Bruce Crunkhorn, Andrew van den Hurk, Peter Whelan, Richard Russell, James Walker, Peter Horne, Gerhard Ehlers, Scott Ritchie
BACKGROUND: The Asian tiger mosquito, Aedes albopictus, is an important vector of dengue, chikungunya and Zika viruses and is a highly invasive and aggressive biter. Established populations of this species were first recognised in Australia in 2005 when they were discovered on islands in the Torres Strait, between mainland Australia and Papua New Guinea. A control program was implemented with the original goal of eliminating Ae. albopictus from the Torres Strait. We describe the evolution of management strategies that provide a template for Ae...
February 2017: PLoS Neglected Tropical Diseases
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