Emerging viral diseases causing serious issues in west Africa

(University of Colorado Anschutz Medical Campus) In a new study, researchers from the Colorado School of Public Health at the University of Colorado Anschutz Medical Campus call attention to the emergence of mosquito-borne viral outbreaks in West Africa, such as dengue (DENV), chikungunya (CHIKV) and Zika (ZIKV) viruses.
Source: EurekAlert! - Medicine and Health - Category: International Medicine & Public Health Source Type: news

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va MM, Gomes CES Abstract The Dengue, Zika and Chikungunya viruses have been spreading in tropical regions, causing epidemics with high morbidity rates and fatal cases. The aim of this study was to assess the diversity and abundance of culicid species and the presence of arboviruses in mosquitoes, at the epicenter of an epidemic outbreak that occurred in people living near an urban Atlantic Forest park. Mosquitoes were captured with a Shannon trap between 2 and 6 pm in seven months of 2019. The Chikungunya virus was investigated according to the protocol described by Lanciotti (2007). The most abundant species wer...
Source: Acta Tropica - Category: Infectious Diseases Authors: Tags: Acta Trop Source Type: research
Abstract Arboviruses transmitted by Aedes mosquitoes are a growing global concern; however, there remain large gaps in surveillance of both arboviruses and their vectors in West Africa. We reviewed over 50 years of data including outbreak reports, peer-reviewed literature, and prior data compilations describing Zika, dengue, and chikungunya, and their vectors in West Africa. Large outbreaks of dengue, Zika, and chikungunya have recently occurred in the region with over 27,000 cases of Aedes-borne disease documented since 2007. Recent arboviral outbreaks have become more concentrated in urban areas, and Aedes albop...
Source: Acta Tropica - Category: Infectious Diseases Authors: Tags: Acta Trop Source Type: research
by Sean M. Cavany, Guido Espa ña, Alun L. Lloyd, Lance A. Waller, Uriel Kitron, Helvio Astete, William H. Elson, Gonzalo M. Vazquez-Prokopec, Thomas W. Scott, Amy C. Morrison, Robert C. Reiner Jr., T. Alex Perkins Recent years have seen rising incidence of dengue and large outbreaks of Zika and chikungunya, which are all caused by viruses transmitted byAedes aegypti mosquitoes. In most settings, the primary intervention againstAedes-transmitted viruses is vector control, such as indoor, ultra-low volume (ULV) spraying. Targeted indoor residual spraying (TIRS) has the potential to more effectively impactAedes-borne ...
Source: PLoS Computational Biology - Category: Biology Authors: Source Type: research
de Jesús Molina-Gamboa Santos Daniel Carmona Aguirre Bernardita de Lourdes Reyes-Berrones Luis Javier Cortés-De la cruz Alejandro García-Barrientos Raúl E. Huidobro-Guevara Regina M. Brussolo-Ceballos Josue Ramirez Aaron Salazar Luis F. Chaves Ismael E. Badillo-Vargas Gabriel L. Hamer Mosquito-borne viruses are emerging or re-emerging globally, afflicting millions of people around the world. Aedes aegypti, the yellow fever mosquito, is the principal vector of dengue, Zika, and chikungunya viruses, and has well-established populations across tropical and subtropical urb...
Source: Viruses - Category: Virology Authors: Tags: Article Source Type: research
Conclusions/SignificanceOur data corroborated previous geographic distributions of resistance mutations and provided evidence for both recombination and sequential accumulation of mutations contributing to the molecular evolution of resistance alleles inA.aegypti.
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
by Luciano Veiga Cosme, Andrea Gloria-Soria, Adalgisa Caccone, Jeffrey Robert Powell, Ademir Jesus MartinsAedes aegypti is the primary vector of dengue, chikungunya, Zika, and urban yellow fever. Insecticides are often the most effective tools to rapidly decrease the density of vector populations, especially during arbovirus disease outbreaks. However, the intense use of insecticides, particularly pyrethroids, has selected for resistant mosquito populations worldwide. Mutations in the voltage gated sodium channel (NaV) are among the principal mechanisms of resistance to pyrethroids and DDT, also known as “knockdown r...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
by Thiago Nunes Pereira, Fabiano Duarte Carvalho, Silvana Faria De Mendon ça, Marcele Neves Rocha, Luciano Andrade Moreira Newly emerging or re-emerging arthropod-borne viruses (arboviruses) are important causes of human morbidity and mortality worldwide. Arboviruses such as Dengue (DENV), Zika (ZIKV), Chikungunya (CHIKV), and West Nile virus (WNV) have undergone extensive geographic expansion in the tropical and sub- tropical regions of the world. In the Americas the main vectors of DENV, ZIKV, and CHIKV are mosquito species adapted to urban environments, namelyAedes aegypti andAedes albopictus, whereas the main v...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
ConclusionsData obtained emphasise the importance of understanding theuser of media platforms and sharing information in a timely fashion through a transparent process with the content that convinces people of the seriousness of the matter.
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
ConclusionCHIKV is an important cause of illness amongst patients presenting with acute febrile illness in Sindh region of Pakistan. Arthralgia and encephalitis at time of presentation among patients with dengue-like illness should prompt suspicion of CHIKV infection, and laboratory confirmation must be sought.
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
Conclusion: These results suggest that if no vector control measures are considered to be in place, the risk of new arboviral outbreaks in Cabo Verde is high. The vector control strategy adopted must include measures of public health directed to domestic water storage and management.
Source: International Journal of Environmental Research and Public Health - Category: Environmental Health Authors: Tags: Article Source Type: research
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