New framework helps gauge impact of mosquito control programs

(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

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pes Vieira The mosquito species Aedes aegypti is one of the main vectors of arboviruses, including dengue, Zika and chikungunya. Considering the deficiency or absence of vaccines to prevent these diseases, vector control remains an important strategy. The use of plant natural product-based insecticides constitutes an alternative to chemical insecticides as they are degraded more easily and are less harmful to the environment, not to mention their lower toxicity to non-target insects. This review details plant species and their secondary metabolites that have demonstrated insecticidal properties (ovicidal, larvicidal...
Source: Molecules - Category: Chemistry Authors: Tags: Review Source Type: research
The control of insects of medical importance, such as Aedes aegypti and Aedes albopictus are still the only effective way to prevent the transmission of diseases, such as dengue, chikungunya and Zika. Their contr...
Source: Parasites and Vectors - Category: Microbiology Authors: Tags: Review Source Type: research
In this study we measured IgG responses to al34k2 and to Ae. albopictus salivary gland protein extracts (SGE) in individuals naturally exposed to the tiger mosquito. Sera were collected in two areas of Northeast Italy (Padova and Belluno) during two different time periods: at the end of the low- and shortly after the high-density mosquito seasons. Anti-SGE and anti-al34k2 IgG levels increased after the summer period of exposure to mosquito bites and were higher in Padova as compared to Belluno. An age-dependent decrease of anti-saliva IgG responses was found especially in Padova, an area with at least 25 years history of A...
Source: Frontiers in cellular and infection microbiology - Category: Microbiology Source Type: research
by Marisa A. P. Donnelly, Susanne Kluh, Robert E. Snyder, Christopher M. Barker The spread ofAedes aegypti in California and other regions of the U.S. has increased the need to understand the potential for local chains ofAe.aegypti-borne virus transmission, particularly in arid regions of the state where the ecology of these mosquitoes is less understood. For public health and vector control programs, it is helpful to know whether variation in risk of local transmission can be attributed to socio-demographic factors that could help to target surveillance and control programs. Socio-demographic factors have been shown to i...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
AbstractSouth Texas has experienced local transmission of Zika virus and of other mosquito-borne viruses such as chikungunya virus and dengue virus in the last decades. Using a mosquito surveillance program in the Lower Rio Grande Valley (LRGV) and San Antonio, TX, from 2016 to 2018, we detected the presence of an insect-specific virus, cell fusing agent virus (CFAV), in theAedes aegypti mosquito population. We tested 6,326 females and 1,249 males from the LRGV and 659 females from San Antonio for CFAV by RT-PCR using specific primers. Infection rates varied from 0 to 261 per 1,000 mosquitoes in the LRGV and 115 to 208 per...
Source: Archives of Virology - Category: Virology Source Type: research
The disease is transmitted through the bite of the female Aedes aegypti mosquito, an invasive species that also spreads diseases like yellow fever, Zika and chikungunya.
Source: Health News: CBSNews.com - Category: Consumer Health News Source Type: news
In this study, we investigate the genetic variation associated with blocking and use these analyses to generate testable hypotheses surrounding the mechanism of Wolbachia-mediated dengue blocking. From our results, we hypothesize that Wolbachia may block virus replication by increasing the regeneration rate of mosquito cells via the Notch signaling pathway. We also propose that Wolbachia modulates the host’s transcriptional pausing pathway either to prime the host’s anti-viral response or to directly inhibit viral replication.
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
We performed an in-depth analysis of the ABC gene family in Aedes aegypti (Diptera: Culicidae), which is an important vector species of arthropod-borne viral infections such as chikungunya, dengue, and Zika. Desp...
Source: BMC Genomics - Category: Genetics & Stem Cells Authors: Tags: Research article Source Type: research
After the outbreak in French Polynesia, Zika virus (ZIKV) explosive pandemic occurred in 2015, reports that ZIKV was linked to other diseases, especially neurological complications such as Guillain-Barré Syndrome (GBS), also burst in almost every continent, thereby turning into an international concern. In South America, the highest incidence occurred in Venezuela with approximately 680 cases of GBS after ZIKV infection. Currently, the main roots of this association remain unknown. In this regard, it is thought that the immune system plays a central role in such association through the host protection or even improv...
Source: Current Immunology Reviews - Category: Allergy & Immunology Source Type: research
Aedes aegypti is a primary vector of dengue, chikungunya and Zika infections in India. In the absence of specific drugs or safe and effective vaccines for these infections, their control relies mainly on vector c...
Source: Parasites and Vectors - Category: Microbiology Authors: Tags: Research Source Type: research
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