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Infectious Disease: Chikungunya

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Total 24 results found since Jan 2013.

State ‐wide survey of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) in Florida
ABSTRACTAedes aegyptiandAedes albopictusare invasive mosquito species with geographic ranges that have oscillated within Florida since their presence was first documented. Local transmission of dengue, chikungunya, and Zika viruses serves as evidence of the public health importance of these two species. It is important to have detailed knowledge of their distribution to aid in mosquito control efforts and understand the risk of arbovirus transmission to humans. Through a partnership involving the University of Florida Institute of Food and Agricultural Sciences Cooperative Extension Service and the Florida Medical Entomolo...
Source: Journal of Vector Ecology - November 14, 2019 Category: Biology Authors: Casey Parker, Daviela Ramirez, C. Roxanne Connelly Tags: Original Article Source Type: research

Towards harmonisation of entomological surveillance in the Mediterranean area
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, countries surrounding the Mediterranean Sea sh...
Source: PLoS Neglected Tropical Diseases - June 12, 2019 Category: Tropical Medicine Authors: Fr édéric Jourdain Source Type: research

A comparison of mosquito densities, weather and infection rates of Aedes aegypti during the first epidemics of Chikungunya (2014) and Zika (2016) in areas with and without vector control in Puerto Rico
Medical and Veterinary Entomology, EarlyView.
Source: Medical and Veterinary Entomology - September 18, 2018 Category: Veterinary Research Authors: R. Barrera , M. Amador , V. Acevedo , M. Beltran , J. L. Mu ñoz Source Type: research

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 - July 9, 2018 Category: International Medicine & Public Health Source Type: news

Fewer Scientists Are Studying Insects. Here ’s Why That’s So Dangerous
In the summer of 2016, Jerome Goddard, a medical entomologist in Mississippi, received an email from the U.S. Centers for Disease Control and Prevention (CDC) with a desperate ask. The agency was conducting an “urgent” search for insect scientists around the U.S. who could take up to a six-month paid leave from work to help the CDC fight the Zika outbreak in the U.S., and possibly respond to areas with local transmission if needed. “That’s how bad it is—they need to borrow someone,” says Goddard, an extension professor of medical entomology at Mississippi State University. “We can&...
Source: TIME: Health - February 14, 2018 Category: Consumer Health News Authors: Alexandra Sifferlin Tags: Uncategorized healthytime public health Source Type: news

Vectorial status of the Asian tiger mosquito Aedes albopictus of La R éunion Island for Zika virus
Abstract La Réunion Island has been the scene of unusually large epidemics of dengue (DENV) and chikungunya (CHIKV) viruses with Aedes albopictus Diptera, Culicidae (Skuse, 1894) as the sole vector. The emergence of Zika virus (ZIKV) in 2007 and the spread of the epidemic strain of the Asian genotype through the Pacific region and the Americas, mainly via the vector Aedes aegypti (Linnaeus, 1762), has raised concern about its possible introduction to, and transmission in, Ae. albopictus‐infested areas. We performed an experimental oral infection with the Asian genotype of ZIKV in Ae. albopictus from La Réunion and foun...
Source: Medical and Veterinary Entomology - November 30, 2017 Category: Veterinary Research Authors: M. Vazeille, J. ‐S. Dehecq, A.‐B. Failloux Tags: Short Communication Source Type: research

CDC surveys find increase in the number of U.S. counties with Aedes aegypti and Aedes albopictus mosquitoes that can spread Zika
The Southern United States shows a substantial increase in the number of counties that reported evidence of the mosquitoes that can spread chikungunya, dengue, and Zika viruses, according to new research by the Centers for Disease Control and Prevention (CDC) published in the Journal of Medical Entomology.
Source: PHPartners.org - June 21, 2017 Category: International Medicine & Public Health Source Type: news

Assessment of the Probability of Autochthonous Transmission of Chikungunya Virus in Canada under Recent and Projected Climate Change
This study identifies that southern Canada may be the very northern limit for transmission of these pathogens with climate change. Other factors need to be explored however, which include understanding when and where Canadian travelers are likely to return, infrastructure in Canada that may support vector populations in what would be expected to be climatically unsuitable regions, and whether or not there are other competent vectors in Canada. Further research to close the gap on our current understanding of CHIKV and CHIKV vectors, improved surveillance on Ae. albopictus in North America, and enhanced climate projection m...
Source: EHP Research - June 5, 2017 Category: Environmental Health Authors: Web Admin Tags: Research Source Type: research

Vectors: Aedes Albopictus
European Union, European Centre for Disease Prevention and Control. 12/20/2016 This resource provides information about the Aedes albopictus mosquito, a known vector of chikungunya virus, dengue virus, and dirofilariasis, and a potential vector of Zika virus. It discusses the hazard associated with the mosquito species, geographical distribution, entomology, epidemiology and transmission of pathogens, public health (control/intervention), and key areas of uncertainty. (Text)
Source: Disaster Lit: Resource Guide for Disaster Medicine and Public Health - January 4, 2017 Category: Global & Universal Authors: The U.S. National Library of Medicine Source Type: news

Knockdown Resistance Mutations in Aedes aegypti (Diptera: Culicidae) From Puerto Rico
This study assessed the levels of permethrin resistance and the frequency of two kdr mutations in eight Ae. aegypti populations collected in Puerto Rico in 2013. Permethrin resistance factors ranged from 33–214-fold relative to the New Orleans reference strain. The frequency of kdr mutation Ile1,016 ranged from 0.65 to fixation (1.0), and for Cys1,534 frequencies varied from 0.8 to fixation. Alarmingly, two populations—Carolina and Caguas—reached fixation at both loci. Our results suggest that permethrin effectiveness for Ae. aegypti control is compromised in these collections from Puerto Rico.
Source: Journal of Medical Entomology - November 11, 2016 Category: Biology Authors: Ponce-Garcia, G., Del Rio-Galvan, S., Barrera, R., Saavedra-Rodriguez, K., Villanueva-Segura, K., Felix, G., Amador, M., Flores, A. E. Tags: Vector Control, Pest Management, Resistance, Repellents Source Type: research

Aedes albopictus (Diptera: Culicidae) and Mosquito-Borne Viruses in the United States
The Asian tiger mosquito Aedes albopictus (Skuse), is a highly invasive species that continues to expand its geographic distribution both in the United States and in countries on other continents. Studies have demonstrated its susceptibility to infection with at least 32 viruses, including 13 that are present in the United States. Despite this susceptibility, its role as a significant competent vector in natural transmission cycles of arboviruses, has been limited. However, with the recent introductions of chikungunya and Zika viruses into the Americas, for which Ae. albopictus is a recognized vector, it is possible that t...
Source: Journal of Medical Entomology - September 2, 2016 Category: Biology Authors: Vanlandingham, D. L., Higgs, S., Huang, Y.-J. S. Tags: Special Collection: Thirty Years of Aedes albopictus (Diptera: Culicidae) in America Source Type: research

The Eye of the Tiger, the Thrill of the Fight: Effective Larval and Adult Control Measures Against the Asian Tiger Mosquito, Aedes albopictus (Diptera: Culicidae), in North America
The Asian tiger mosquito, Aedes albopictus (Skuse), is a highly invasive container-inhabiting species with a global distribution. This mosquito, similar to other Stegomyia species such as Aedes aegypti (L.), is highly adapted to urban and suburban areas, and commonly oviposits in artificial containers, which are ubiquitous in these peridomestic environments. The increase in speed and amount of international travel and commerce, coupled with global climate change, have aided in the resurgence and expansion of Stegomyia species into new areas of North America. In many parts of their range, both species are implicated as sign...
Source: Journal of Medical Entomology - September 2, 2016 Category: Biology Authors: Faraji, A., Unlu, I. Tags: Special Collection: Thirty Years of Aedes albopictus (Diptera: Culicidae) in America Source Type: research

Reported Distribution of Aedes (Stegomyia) aegypti and Aedes (Stegomyia) albopictus in the United States, 1995-2016 (Diptera: Culicidae)
Aedes (Stegomyia) aegypti (L.) and Aedes (Stegomyia) albopictus (Skuse) transmit arboviruses that are increasing threats to human health in the Americas, particularly dengue, chikungunya, and Zika viruses. Epidemics of the associated arboviral diseases have been limited to South and Central America, Mexico, and the Caribbean in the Western Hemisphere, with only minor localized outbreaks in the United States. Nevertheless, accurate and up-to-date information for the geographical ranges of Ae. aegypti and Ae. albopictus in the United States is urgently needed to guide surveillance and enhance control capacity for these mosqu...
Source: Journal of Medical Entomology - September 2, 2016 Category: Biology Authors: Hahn, M. B., Eisen, R. J., Eisen, L., Boegler, K. A., Moore, C. G., McAllister, J., Savage, H. M., Mutebi, J.-P. Tags: Sampling, Distribution, Dispersal Source Type: research

TrapTech R-Octenol Lure Does Not Improve the Capture Rates of Aedes albopictus (Diptera: Culicidae) and Other Container-Inhabiting Species in Biogents Sentinel Traps
This study evaluated the effectiveness of the TrapTech lure (TT lure), containing R-octenol, alone or in combination with the human skin lure in a BGS trap to capture Ae. albopictus and other species. BGS traps with human skin lures or a combination of the two lures collected approximately twice as many Ae. albopictus females compared to those with TT lures. Unlike previous studies, baiting BGS traps with TT lures did not result in increased diversity of mosquito species, or in higher numbers of other container-inhabiting Aedes species. Although human skin lures were clearly superior to TT R-octenol lures in BGS traps, R-o...
Source: Journal of Medical Entomology - June 29, 2016 Category: Biology Authors: Unlu, I., Faraji, A., Indelicato, N., Rochlin, I. Tags: Short Communication Source Type: research

Biological and Chemical Characterization of a New Larvicide Ovitrap Made of Plastic With Pyriproxyfen Incorporated for Aedes aegypti (Diptera: Culicidae) Control
In this study, we performed a biological and chemical characterization of a new ovitrap prototype manufactured by injection molding of low-density polyethylene (LDPE) with the larvicide pyriproxyfen. Our research shows that pyriproxyfen was immediately released from the LDPE into the water of the ovitrap and led to an emergence inhibition of 100% for over 30 weeks. In addition, ovitraps continued to show a high larvicidal activity after over 20 washes. Pyriproxyfen was detectable in the water after 20 s and reached a peak after 24 h. Our results show that this ovitrap can be an effective, inexpensive, and low-maintenance t...
Source: Journal of Medical Entomology - May 19, 2016 Category: Biology Authors: Harburguer, L., Licastro, S., Masuh, H., Zerba, E. Tags: Vector Control, Pest Management, Resistance, Repellents Source Type: research