New insights on mosquitoes that spread disease

(Wiley) The Asian tiger mosquito (Aedes albopictus) is a highly invasive species and a vector of multiple pathogens including various viruses, such as chikungunya, dengue, and Zika. A new Medical and Veterinary Entomology study that evaluated the relationship between the mosquito's presence and habitat variables at a small scale provides important information for planning effective prevention and control campaigns.
Source: EurekAlert! - Medicine and Health - Category: International Medicine & Public Health Source Type: news

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by Spencer J. Fox, Steven E. Bellan, T. Alex Perkins, Michael A. Johansson, Lauren Ancel Meyers As emerging and re-emerging infectious arboviruses like dengue, chikungunya, and Zika threaten new populations worldwide, officials scramble to assess local severity and transmissibility, with little to no epidemiological history to draw upon. Indirect estimates of risk from vector habitat suitabi lity maps are prone to great uncertainty, while direct estimates from epidemiological data are only possible after cases accumulate and, given environmental constraints on arbovirus transmission, cannot be widely generalized beyond th...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
by Fr édéric Jourdain, Abdallah M. Samy, Afrim Hamidi, Ali Bouattour, Bülent Alten, Chafika Faraj, David Roiz, Dušan Petrić, Elisa Pérez-Ramírez, Enkeledja Velo, Filiz Günay, Golubinka Bosevska, Ibrahim Salem, Igor Pajovic, Jelena Marić, Khalil Kanani, Lusine Paronyan, Maria-Grazia Dente, Marie P icard, Marija Zgomba, M'hammed Sarih, Nabil Haddad, Oleksandr Gaidash, Roena Sukhiasvili, Silvia Declich, Taher Shaibi, Tatiana Sulesco, Zoubir Harrat, Vincent Robert BackgroundThe Mediterranean Basin is historically a hotspot for trade, transport, and migration. As a result, countrie...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
Failloux Although the role of exogenous small interfering RNA (siRNA) and P-element induced wimpy testis (PIWI)-interacting RNA (piRNA) pathways in mosquito antiviral immunity is increasingly better understood, there is still little knowledge regarding the role of mosquito cellular microRNA (miRNA). Identifying direct interactions between the mosquito miRNAs and the RNA genome of arboviruses and choosing the relevant miRNA candidates to explore resulting antiviral mechanisms are critical. Here, we carried out genomic analyses to identify Aedes aegypti miRNAs that potentially interact with various lineages and genotyp...
Source: Viruses - Category: Virology Authors: Tags: Article Source Type: research
This study shows spatiotemporal variability in IR inAe.aegypti populations in southern coastal Ecuador, and provides an initial examination of IR in this region, helping to guide vector control efforts forAe.aegypti.
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
Conclusions: The decrease in the number of dengue cases after co-circulation of the three viruses could indicate possible cross-protection. This finding should be further analyzed. PMID: 31171921 [PubMed]
Source: Pan American Journal of Public Health - Category: International Medicine & Public Health Tags: Rev Panam Salud Publica Source Type: research
Abstract Aedes aegypti, the mosquito that carries dengue, chikungunya, and Zika viruses, is present throughout the U.S. Virgin Islands (USVI). To reduce mosquitoborne disease transmission, the USVI Department of Health (VIDOH) is responsible for integrated mosquito management. During January 2016-January 2018, USVI experienced its first Zika outbreak, with most cases reported during January-December 2016, as well as two Category 5 hurricanes (Irma on St. Thomas/St. John on September 6, 2017, and Maria on St. Croix on September 19, 2017). The hurricanes severely damaged mosquito protection-related building structur...
Source: MMWR Morb Mortal Wkl... - Category: Epidemiology Authors: Tags: MMWR Morb Mortal Wkly Rep Source Type: research
Publication date: Available online 29 May 2019Source: International Journal of Pediatrics and Adolescent MedicineAuthor(s): Tracy Evans-GilbertAbstractChikungunya (CHIKV), Zika (ZIKV), and Dengue viruses (DENV) exhibit similar ecological, evolutionary, and epidemiological patterns but have different pathophysiological mechanisms of disease manifestations. Clinical presentations overlap and can be asymptomatic. Differences occur in the severity of clinical presentations with the highest mortality in the general population attributed to DENV and neurological morbidity due to ZIKV. ZIKV and DENV infections can cause fetal los...
Source: International Journal of Pediatrics and Adolescent Medicine - Category: Pediatrics Source Type: research
Conclusions: Major epigenetic alterations found on arboviruses infections were miR-146, miR-30e and the Dicer complex. However, existing studies frequently tested distinct hypotheses resulting in a heterogeneity of methodological approaches. Whilst epigenetic signatures associated with arbovirus infections have been reported, existing studies have largely focused on a small number of diseases, particularly dengue. Validation of epigenetic signatures have an untapped potential, but concerted investigations are certainly required to deliver robust candidates of clinical utility for diagnosis, staging and prognosis of specifi...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
(PLOS) Effective methods of controlling mosquito populations are needed to help lower the worldwide burden of mosquito-borne diseases including Zika, chikungunya, and dengue. Now, researchers reporting in PLOS Neglected Tropical Diseases have described a new statistical framework that can be used to assess mosquito control programs over broad time and space scales.
Source: EurekAlert! - Infectious and Emerging Diseases - Category: Infectious Diseases Source Type: news
by Robert C. Reiner Jr., Steven T. Stoddard, Gonzalo M. Vazquez-Prokopec, Helvio Astete, T. Alex Perkins, Moises Sihuincha, Jeffrey D. Stancil, David L. Smith, Tadeuz J. Kochel, Eric S. Halsey, Uriel Kitron, Amy C. Morrison, Thomas W. Scott During the last 50 years, the geographic range of the mosquitoAedes aegypti has increased dramatically, in parallel with a sharp increase in the disease burden from the viruses it transmits, including Zika, chikungunya, and dengue. There is a growing consensus that vector control is essential to preventAedes-borne diseases, even as effective vaccines become available. What remains uncl...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
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