Consensus and uncertainty in the geographic range of Aedes aegypti and Aedes albopictus in the contiguous United States: Multi-model assessment and synthesis

by Andrew J. Monaghan, Rebecca J. Eisen, Lars Eisen, Janet McAllister, Harry M. Savage, John-Paul Mutebi, Michael A. JohanssonAedes (Stegomyia) aegypti (L.) andAe.(Stegomyia) albopictus (Skuse) mosquitoes can transmit dengue, chikungunya, yellow fever, and Zika viruses. Limited surveillance has led to uncertainty regarding the geographic ranges of these vectors globally, and particularly in regions at the present-day margins of habitat suitability such as the contiguous United States. Empirical habitat suitability models based on environmental conditions can augment surveillance gaps to describe the estimated potential species ranges, but model accuracy is unclear. We identified previously published regional and global habitat suitability models forAe.aegypti (n = 6) andAe.albopictus (n = 8) for which adequate information was available to reproduce the models for the contiguous U.S. Using a training subset of recently updated county-level surveillance records ofAe.aegypti andAe.albopictus and records of counties conducting surveillance, we constructed accuracy-weighted, probabilistic ensemble models from these base models. To assess accuracy and uncertainty we compared individual and ensemble model predictions of species presence or absence to both training and testing data. The ensemble models were among the most accurate and also provided calibrated probabilities of presence for each species. The quantitative probabilistic framework enabled identification of areas with high...
Source: PLoS Computational Biology - Category: Biology Authors: Source Type: research

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Background: From 1995 till 2019, around 147,200 cases of dengue infection and more than 800 deaths are reported from Pakistan. Vector of dengue virus is mosquito Aedes which is capable of transmitting other viral infections like Chikungunya, Zika, and Yellow Fever. From 2016 –2018, Chikungunya infection was reported in 776 patients. With exponential increase in population and utilization of resources, it is important to eradicate this mosquito.
Source: International Journal of Infectious Diseases - Category: Infectious Diseases Authors: Tags: 0631 Source Type: research
In the last decades, a number of infectious viruses have emerged from wildlife or re-emerged, generating serious threats to the global health and to the economy worldwide. Ebola and Marburg hemorrhagic fevers, Lassa fever, Dengue fever, Yellow fever, West Nile fever, Zika, and Chikungunya vector-borne diseases, Swine flu, Severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS), and the recent Coronavirus disease 2019 (COVID-19) are examples of zoonoses that have spread throughout the globe with such a significant impact on public health that the scientific community has been called for a rapid int...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
ila S. Espindola The number of documented dengue cases has increased dramatically in recent years due to transmission through the Aedes aegypti mosquito bite. Vector control remains the most effective measure to protect against this and other arboviral diseases including Zika, chikungunya and (urban) yellow fever, with an established vaccine only available for yellow fever. Although the quinone class shows potential as leading compounds for larvicide development, limited information restricts the development of optimized structures and/or formulations. Thus, in this contribution we investigated the larvicidal and pupic...
Source: Molecules - Category: Chemistry Authors: Tags: Article Source Type: research
by Shuzhen Sim, Lee Ching Ng, Steve W. Lindsay, Anne L. Wilson Vector-borne diseases are a major cause of morbidity and mortality worldwide.Aedes-borne diseases, in particular, including dengue, chikungunya, yellow fever, and Zika, are increasing at an alarming rate due to urbanisation, population movement, weak vector control programmes, and climate change. The World Health Organization calls for strengthening of vector control programmes in line with the Global Vector Control Response (GVCR) strategy, and many vector control programmes are transitioning to this new approach. The Singapore dengue control programme, situa...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
[Malaria Consortium] On World Mosquito Day, Malaria Consortium calls for the international community to reflect on the devasting impact the mosquito has on global health. In 2018, there were over 228 million malaria cases throughout the world and a global death toll of 405,000. But mosquitoes are responsible for transmitting more than just malaria - from zika virus to yellow fever, dengue, chikungunya, Japanese encephalitis and many more - collectively adding another 500 million cases of people burdened with febrile disease ea
Source: AllAfrica News: Malaria - Category: Infectious Diseases Source Type: news
by Sarah Guth, Kathryn A. Hanley, Benjamin M. Althouse, Mike Boots Pathogens originating from wildlife (zoonoses) pose a significant public health burden, comprising the majority of emerging infectious diseases. Efforts to control and prevent zoonotic disease have traditionally focused on animal-to-human transmission, or “spillover.” However, in the modern er a, increasing international mobility and commerce facilitate the spread of infected humans, nonhuman animals (hereafter animals), and their products worldwide, thereby increasing the risk that zoonoses will be introduced to new geographic areas. Imported ...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: 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
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
gari Alphaviruses are globally distributed and predominately transmitted by mosquitoes. Aedes species are common vectors for the clinically important alphaviruses—Chikungunya, Sindbis, and Ross River (RRV) viruses—with Aedes aegypti also being a vector for the flaviviruses dengue, Yellow Fever, and Zika viruses. Ae. aegypti was putatively implicated in the large 1979–1980 South Pacific Islands outbreak of RRV—the leading cause of arboviral disease in Australia today. The RNA interference (RNAi) defense response in mosquitoes involves a number of small RNAs, with their kinetics in...
Source: Viruses - Category: Virology Authors: Tags: Article Source Type: research
In this study, the main constituent, the predominant class of essential oil extracted from the husks of Citrus limonia Osbeck was identified and evaluated to know if it has biological act...
Source: Journal of Medicinal Plants Research - Category: Complementary Medicine Source Type: research
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