Results 61 to 70 of about 56,924 (263)

Emergent arboviruses in Brazil [PDF]

Revista da Sociedade Brasileira de Medicina Tropical, 2007
Brazil is a large tropical country (8,514,215km²) with 185,360,000 inhabitants. More than one third of its territory is covered by tropical forests or other natural ecosystems. These provide ideal conditions for the existence of many arboviruses, which are maintained in a large variety of zoonotic cycles.
openaire   +5 more sources

Possible Arbovirus Found in Virome of Melophagus ovinus

Viruses, 2021
Members of the Lipopteninae subfamily are blood-sucking ectoparasites of mammals. The sheep ked (Melophagus ovinus) is a widely distributed ectoparasite of sheep.
Alexander G. Litov, Oxana A. Belova, Ivan S. Kholodilov, Magomed N. Gadzhikurbanov, Larissa V. Gmyl, Natalia D. Oorzhak, Anna A. Saryglar, Aydar A. Ishmukhametov, Galina G. Karganova   +8 more
doaj   +1 more source

Larvicidal Activity of Phytochemicals From Handroanthus impetiginosus Seeds Against Culex quinquefasciatus

Chemistry &Biodiversity, EarlyView.
The hexane extract was obtained from the seeds of H. impetiginosus, from which fatty acids and FAMEs were obtained. The three samples were tested on C. quinquefasciatus larvae, promoting mortality with moderate LC50 values. The hexane extract was analyzed by gas chromatographymass spectrometry (GC‐MS), and the most abundant compounds were ethyl oleate (
Luana Cristina Diniz Santos, Lucas Santos Azevedo, Ezequias Pessoa de Siqueira, Mairon César Coimbra, Stênio Nunes Alves, Ana Hortência Fonsêca Castro, Luciana Alves Rodrigues dos Santos Lima   +6 more
wiley   +1 more source

Emerging and reemerging arboviruses: a new threat in Eastern Peru [PDF]

, 2017
Background: Arboviral diseases are one of the most common causes of acute febrile illness (AFI) and a significant health problem in South America. In Peru, laboratory etiologic identification of these infections occurs in less than 50% of cases, leading ...
Valle Mendoza, Luis Javier del
core   +2 more sources

Adult T‐cell leukemia/lymphoma in French Guiana (1990–2019): Epidemiology, clinical features, and HTLV‐1 genetic diversity in the two main ethnic populations

International Journal of Cancer, EarlyView.
What's New? Adult T‐cell leukemia/lymphoma (ATL) is a rare and aggressive malignancy caused by human T‐cell leukemia virus type 1 (HTLV‐1). The authors comprehensively analyzed the epidemiological and clinical features of ATL over a 30‐year period in French Guiana, a region with high HTLV‐1 endemicity and a multiethnic population.
Jill‐Léa Ramassamy, Patricia Tortevoye, Balthazar Ntab, Gabriel Carles, Jean‐Pierre Droz, Pierre Couppié, Giovanni Begliomini, Jean‐Francois Carod, N'detodji‐Bill Wankpo, Karim Abdelmoumen, Philippe V. Afonso, Olivier Cassar, Antoine Talarmin, Olivier Hermine, Loïc Epelboin, Ambroise Marçais, Antoine Gessain   +16 more
wiley   +1 more source

Pathways for entry of livestock arboviruses into Great Britain : assessing the strength of evidence [PDF]

, 2015
The emergence of bluetongue virus and Schmallenberg virus in Great Britain (GB) during the last decade has highlighted the need for understanding the relative importance of the various pathways of the entry of livestock arboviruses so as to help focus ...
Gale, P., Kelly, Louise, Snary, E.L.
core   +1 more source

Crimean-Congo haemorrhagic fever among healthcare workers in Iran 2000–2023, a report of National Reference Laboratory

BMC Infectious Diseases
Background Crimean-Congo haemorrhagic fever (CCHF) is a lethal acute viral zoonosis with a case fatality rate of 5–50%. Due to the potential of human-to human transmission of the disease, healthcare workers (HCWs) are at risk of occupational exposure to ...
Mehdi Fazlalipour, Tahmineh Jalali, Roger Hewson, Mohammad Hassan Pouriayevali, Mostafa Salehi-Vaziri   +4 more
doaj   +1 more source

Endogenous non-retroviral elements in genomes of Aedes mosquitoes and vector competence

Emerging Microbes and Infections, 2019
Recent extensive (re)emergences of arthropod-borne viruses (arboviruses) such as chikungunya (CHIKV), zika (ZIKV) and dengue (DENV) viruses highlight the role of the epidemic vectors, Aedes aegypti and Aedes albopictus, in their spreading. Differences of
Vincent Houé, Mariangela Bonizzoni, Anna-Bella Failloux   +2 more
doaj   +1 more source

Analysis of Gene Expression in Aedes aegypti Suggests Changes in Early Genetic Control of Mosquito Development

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, EarlyView.
ABSTRACT Aedes aegypti, a critical vector for tropical diseases, poses significant challenges for studying its embryogenesis due to difficulties in removing its rigid chorion and achieving effective fixation for in situ hybridization. Here, we present novel methodologies for fixation, dechorionation, DAPI staining, and in situ hybridization, enabling ...
Renata Coutinho‐dos‐Santos, Danielle Santos, Lupis Ribeiro, Jonathan J. Mucherino‐Muñoz, Marcelle Uhl, Carlos Logullo, A. Mendonça‐Amarante, M. Fantappie, Rodrigo Nunes‐da‐Fonseca   +8 more
wiley   +1 more source

Mosquito Immunity against Arboviruses [PDF]

Viruses, 2014
Arthropod-borne viruses (arboviruses) pose a significant threat to global health, causing human disease with increasing geographic range and severity. The recent availability of the genome sequences of medically important mosquito species has kick-started investigations into the molecular basis of how mosquito vectors control arbovirus infection. Here,
Shuzhen Sim, Natapong Jupatanakul, George Dimopoulos   +2 more
openaire   +3 more sources