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Infectious Disease: Dengue Fever

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Total 77 results found since Jan 2013.

Dengue fever : Symptoms, epidemiology, entomology, pathogen diagnosis and prevention.
Authors: Wiemer D, Frickmann H, Krüger A Abstract Dengue infections are among the most frequent causes of febrile disease in tropical climates. Infections are caused by a flavivirus transmitted by the Aedes mosquito. Aedes aegypti mosquitos are the main transmitters of Dengue viruses. Since these insects are both diurnal and container breeders, particular prevention and control measures are required. Symptom severity varies and can range from a mild, flu-like clinical picture to severe hemorrhage and shock. The most common symptoms experienced by travelers include fever, muscular pain, headaches and skin rash. Dep...
Source: Der Hautarzt: Zeitschrift fur Dermatologie, Venerologie, und verwandte Gebiete - November 19, 2017 Category: Dermatology Tags: Hautarzt Source Type: research

Vector competence and innate immune responses to dengue virus infection in selected laboratory and field ‐collected Stegomyia aegypti (= Aedes aegypti)
Medical and Veterinary Entomology, Page 312-319, March 2018.
Source: Medical and Veterinary Entomology - April 13, 2017 Category: Veterinary Research Source Type: research

Experimental study of the susceptibility of a European Aedes albopictus strain to dengue virus under a simulated Mediterranean temperature regime
Medical and Veterinary Entomology, EarlyView.
Source: Medical and Veterinary Entomology - July 27, 2018 Category: Veterinary Research Authors: M. Brustolin , C. Santamaria , S. Napp , M. Verd ún , R. Rivas , N. Pujol , S. Talavera , N. Busquets Source Type: research

Impact, economic evaluation, and sustainability of integrated vector management in urban settings to prevent vector-borne diseases: a scoping review
ConclusionsIVM has an impact on reducing vector breeding sites and the entomology index, but evidence of impacts on health outcomes is limited. Social outcomes are improved abilities and capacities, empowerment, and community knowledge. Economic evaluations are scarce, and cost-effectiveness is dependent on illness incidence. Community capacity building is the main component of sustainability, together with collaboration, institutionalization, and routinization of activities. Findings indicate a great heterogeneity in the interventions and highlight the need for characterizing interventions rigorously to facilitate transferability.
Source: Infectious Diseases of Poverty - September 3, 2018 Category: Infectious Diseases Source Type: research

Mosquito Genome Altered In Step Toward Controlling Parasites And Disease
Virginia Tech researchers successfully used a gene disruption technique to change the eye color of a mosquito - a critical step toward new genetic strategies aimed at disrupting the transmission of diseases such as dengue fever. Zach Adelman and Kevin Myles, both associate professors of entomology in the College of Agriculture and Life Sciences and affiliated researchers with the Fralin Life Science Institute, study the transmission of vector-borne diseases and develop novel methods of control, based on genetics...
Source: Health News from Medical News Today - March 26, 2013 Category: Consumer Health News Tags: Tropical Diseases Source Type: news

Population structure of the mosquito Aedes aegypti (Stegomyia aegypti) in Pakistan
Eleven microsatellite markers were used to determine the genetic population structure and spread of Aedes aegypti (Stegomyia aegypti) (Diptera: Culicidae) in Pakistan using mosquitoes collected from 13 different cities. There is a single genetic cluster of Ae. aegypti in Pakistan with a pattern of isolation by distance within the population. The low level of isolation by distance suggests the long‐range passive dispersal of this mosquito, which may be facilitated by the tyre trade in Pakistan. A decrease in genetic diversity from south to north suggests a recent spread of this mosquito from Karachi. A strong negative cor...
Source: Medical and Veterinary Entomology - May 13, 2013 Category: Veterinary Research Authors: S. B. RASHEED, M. BOOTS, A. C. FRANTZ, R. K. BUTLIN Source Type: research

Diet of hookworms to tackle a bread allergy
James Logan, a biologist at the School of Hygiene and Tropical Medicine also tried leeches and is thinking about maggot therapy• Read about more scientists who go to extremes lengthsA lot of people don't realise that just one metre below your feet walking along Gower Street or Malet Street in London, you have thousands upon thousands of very hungry, potentially dangerous insects.In the basement we have our insectary colonies where we keep lots of different species of mosquitoes, found in all parts of the world. None of them are infected with malaria, but they are in very high numbers. We also have bed bugs, house dust mi...
Source: Guardian Unlimited Science - December 1, 2013 Category: Science Authors: Josh Davis Tags: Allergies Health Medical research Society Technology Features Animals Insects The Observer Environment Science Wildlife Source Type: news

Wolbachia infection does not alter attraction of the mosquito Aedes (Stegomyia) aegypti to human odours
Abstract The insect endosymbiont Wolbachia pipientis (Rickettsiales: Rickettsiaceae) is undergoing field trials around the world to determine if it can reduce transmission of dengue virus from the mosquito Stegomyia aegypti to humans. Two different Wolbachia strains have been released to date. The primary effect of the wMel strain is pathogen protection whereby infection with the symbiont limits replication of dengue virus inside the mosquito. A second strain, wMelPop, induces pathogen protection, reduces the adult mosquito lifespan and decreases blood feeding success in mosquitoes after 15 days of age. Here we test whethe...
Source: Medical and Veterinary Entomology - March 1, 2014 Category: Veterinary Research Authors: A. P. TURLEY, R. C. SMALLGANGE, W. TAKEN, M. P. ZALUCKI, S. L. O'NEILL, E. A. MCGRAW Tags: Short Communication Source Type: research

Multi‐scale analysis of the associations among egg, larval and pupal surveys and the presence and abundance of adult female Aedes aegypti (Stegomyia aegypti) in the city of Merida, Mexico
This study reports the results of a multi‐scale, cross‐sectional entomological survey carried out in 1160 households in the city of Merida, Mexico to establish: (a) the correlation between levels of Ae. aegypti presence and abundance detected with aspirators and ovitraps; (b) which immature and egg indices correlate with the presence and abundance of Ae. aegypti females, and (c) the correlations amongst traditional Aedes indices and their modifications for pupae at the household level and within medium‐sized geographic areas used for vector surveillance. Our analyses show that ovitrap positivity was significantly ass...
Source: Medical and Veterinary Entomology - May 6, 2014 Category: Veterinary Research Authors: P. MANRIQUE‐SAIDE, P. COLEMAN, P. J. MCCALL, A. LENHART, G. VÁZQUEZ‐PROKOPEC, C. R. DAVIES Tags: ORIGINAL ARTICLE Source Type: research

Field evaluation of the response of Aedes albopictus (Stegomyia albopicta) to three oviposition attractants and different ovitrap placements using black and clear autocidal ovitraps in a rural area of Same, Timor‐Leste
Abstract Known oviposition attractants or stimulants were compared, singly and in combination, using inexpensive autocidal ovitraps designed to trap emerging adults, in a rural area of Timor‐Leste during the dry season. In this area, the dengue vector Aedes albopictus (Stegomyia albopicta) Skuse (Diptera: Culicidae) was abundant, but Aedes aegypti (Stegomyia aegypti) L. was not detected. The attractants were: (a) a compound found in Aedes eggs (dodecanoic acid); (b) components of nitrogen, phosphorous and potassium‐based (NPK) fertilizer, and (c) infusions of discarded cigarette butts. A solution of ammonium phosphate ...
Source: Medical and Veterinary Entomology - March 1, 2014 Category: Veterinary Research Authors: E. M. ANDERSON, J. A. DAVIS Tags: Original Article Source Type: research

Social sustainability of Mesocyclops biological control for dengue in South Vietnam.
Abstract Copepod Mesocyclops as biological control agents for dengue was previously proven to be effective and sustainable in the Northern and Central provinces of Vietnam. We aim to study social sustainability of Mesocyclops intervention in south Vietnam. Both quantitative and qualitative approaches were used. An entomological survey was carried out in 100 random households of Chanh An commune, Vinh Long Province. Aedes larval indices and Mesocyclops prevalence were compared with historical pre- and post-intervention values. In the same commune, using purposeful sampling, sixteen semi-structured interviews (1 vil...
Source: Acta Tropica - October 10, 2014 Category: Infectious Diseases Authors: Tran TT, Olsen A, Viennet E, Sleigh A Tags: Acta Trop Source Type: research

Describing the Breakbone Fever: IDODEN, an Ontology for Dengue Fever
Conclusions/Significance The availability of the dengue ontology will enable databases hosting dengue-associated data and decision-support systems for that disease to perform most efficiently and to link their own data to those stored in other independent repositories, in an architecture- and software-independent manner.
Source: PLoS Neglected Tropical Diseases - February 3, 2015 Category: Tropical Medicine Authors: Elvira Mitraka et al. Source Type: research

Imidacloprid impairs the post‐embryonic development of the midgut in the yellow fever mosquito Stegomyia aegypti (=Aedes aegypti)
Abstract The mosquito Stegomyia aegypti (=Aedes aegypti) (Diptera: Culicidae) is a vector for the dengue and yellow fever viruses. As blood digestion occurs in the midgut, this organ constitutes the route of entry of many pathogens. The effects of the insecticide imidacloprid on the survival of St. aegypti were investigated and the sub‐lethal effects of the insecticide on midgut development were determined. Third instar larvae were exposed to different concentrations of imidacloprid (0.15, 1.5, 3.0, 6.0 and 15.0 p.p.m.) and survival was monitored every 24 h for 10 days. Midguts from imidacloprid‐treated insects...
Source: Medical and Veterinary Entomology - May 13, 2015 Category: Veterinary Research Authors: K. M. FERNANDES, W. G. GONZAGA, T. V. PASCINI, F. R. MIRANDA, H. V. V. TOMÉ, J. E. SERRÃO, G. F. MARTINS Tags: Original Article Source Type: research