Read by QxMD icon Read

entomology insect vector diseases

João Victor Leite Dias, Dimas Ramon Mota Queiroz, Liléia Diotaiuti, Herton Helder Rocha Pires
Community participation is the main strategy to sustainability of Chagas disease entomological surveillance. The purpose of this study was to evaluate the level of knowledge on triatomine insects and Chagas disease among the residents from eight localities of Diamantina, in Minas Gerais, with a view to observing any associations between their knowledge and infestations by triatomines. In order to evaluate this knowledge, questionnaires were used containing both closed and open questions. They were applied to 583 residents who were ten years old or over...
June 2016: Ciência & Saúde Coletiva
Stéphanie Jacquet, Karine Huber, Hélène Guis, Marie-Laure Setier-Rio, Maria Goffredo, Xavier Allène, Ignace Rakotoarivony, Christine Chevillon, Jérémy Bouyer, Thierry Baldet, Thomas Balenghien, Claire Garros
BACKGROUND: Introduction of vector species into new areas represents a main driver for the emergence and worldwide spread of vector-borne diseases. This poses a substantial threat to livestock economies and public health. Culicoides imicola Kieffer, a major vector species of economically important animal viruses, is described with an apparent range expansion in Europe where it has been recorded in south-eastern continental France, its known northern distribution edge. This questioned on further C...
2016: Parasites & Vectors
Kelly Louise Bennett, Yvonne-Marie Linton, Fortunate Shija, Martha Kaddumukasa, Rousseau Djouaka, Gerald Misinzo, Julius Lutwama, Yiau-Min Huang, Luke B Mitchell, Miriam Richards, Eric Tossou, Catherine Walton
INTRODUCTION: Yellow fever continues to be a problem in sub-Saharan Africa with repeated epidemics occurring. The mosquito Aedes bromeliae is a major vector of yellow fever, but it cannot be readily differentiated from its non-vector zoophilic sister species Ae. lilii using morphological characters. Genetic differences have been reported between anthropophilic Ae. bromeliae and zoophilic Ae. lilii and between forest and domestic populations. However, due to the application of different molecular markers and non-overlapping populations employed in previous studies, interpretation of species delimitation is unclear...
December 2015: PLoS Neglected Tropical Diseases
Sandra Talavera, Francesc Muñoz-Muñoz, Mauricio Durán, Marta Verdún, Anna Soler-Membrives, Álvaro Oleaga, Antonio Arenas, Francisco Ruiz-Fons, Rosa Estrada, Nitu Pagès
The genus Culicoides Latreille 1809 is a well-known vector for protozoa, filarial worms and, above all, numerous viruses. The Bluetongue virus (BTV) and the recently emerged Schmallenberg virus (SBV) are responsible for important infectious, non-contagious, insect-borne viral diseases found in domestic ruminants and transmitted by Culicoides spp. Both of these diseases have been detected in wild ruminants, but their role as reservoirs during the vector-free season still remains relatively unknown. In fact, we tend to ignore the possibility of wild ruminants acting as a source of disease (BTV, SBV) and permitting its reintroduction to domestic ruminants during the following vector season...
2015: PloS One
Olaf Horstick, Silvia Runge Ranzinger
This interim analysis reviews the available systematic literature for dengue vector control on three levels: 1) single and combined vector control methods, with existing work on peridomestic space spraying and on Bacillus thuringiensis israelensis; further work is available soon on the use of Temephos, Copepods and larvivorous fish; 2) or for a specific purpose, like outbreak control, and 3) on a strategic level, as for example decentralization vs centralization, with a systematic review on vector control organization...
2015: Southeast Asian Journal of Tropical Medicine and Public Health
Glyn A Vale, John W Hargrove, N Alan Cullis, Andrew Chamisa, Stephen J Torr
BACKGROUND: The behaviour of insect vectors has an important bearing on the epidemiology of the diseases they transmit, and on the opportunities for vector control. Two sorts of electrocuting device have been particularly useful for studying the behaviour of tsetse flies (Glossina spp), the vectors of the trypanosomes that cause sleeping sickness in humans and nagana in livestock. Such devices consist of grids on netting (E-net) to catch tsetse in flight, or on cloth (E-cloth) to catch alighting flies...
October 2015: PLoS Neglected Tropical Diseases
Frank Richards, Nidia Rizzo, Carlos Enrique Diaz Espinoza, Zoraida Morales Monroy, Carol Guillermina Crovella Valdez, Renata Mendizabal de Cabrera, Oscar de Leon, Guillermo Zea-Flores, Mauricio Sauerbrey, Alba Lucia Morales, Dalila Rios, Thomas R Unnasch, Hassan K Hassan, Robert Klein, Mark Eberhard, Ed Cupp, Alfredo Domínguez
We report the elimination of Onchocerca volvulus transmission from the Central Endemic Zone (CEZ) of onchocerciasis in Guatemala, the largest focus of this disease in the Americas and the first to be discovered in this hemisphere by Rodolfo Robles Valverde in 1915. Mass drug administration (MDA) with ivermectin was launched in 1988, with semiannual MDA coverage reaching at least 85% of the eligible population in > 95% of treatment rounds during the 12-year period, 2000-2011. Serial parasitological testing to monitor MDA impact in sentinel villages showed a decrease in microfilaria skin prevalence from 70% to 0%, and polymerase chain reaction (PCR)-based entomological assessments of the principal vector Simulium ochraceum s...
December 2015: American Journal of Tropical Medicine and Hygiene
Mario J Grijalva, Anita G Villacis, Sofia Ocaña-Mayorga, Cesar A Yumiseva, Ana L Moncayo, Esteban G Baus
BACKGROUND: Chagas disease is endemic to the southern Andean region of Ecuador, an area with one of the highest poverty rates in the country. However, few studies have looked into the epidemiology, vectors and transmission risks in this region. In this study we describe the triatomine household infestation in Loja province, determine the rate of Trypanosoma cruzi infection in triatomines and study the risk factors associated with infestation. METHODOLOGY/PRINCIPAL FINDINGS: An entomological survey found four triatomine species (Rhodnius ecuadoriensis, Triatoma carrioni, Panstrongylus chinai, and P...
2015: PLoS Neglected Tropical Diseases
Kota Yoshioka, Jiro Nakamura, Byron Pérez, Doribel Tercero, Lenin Pérez, Yuichiro Tabaru
Chagas disease is one of the most serious health problems in Latin America. Because the disease is transmitted mainly by triatomine vectors, a three-phase vector control strategy was used to reduce its vector-borne transmission. In Nicaragua, we implemented an indoor insecticide spraying program in five northern departments to reduce house infestation by Triatoma dimidiata. The spraying program was performed in two rounds. After each round, we conducted entomological evaluation to compare the vector infestation level before and after spraying...
December 2015: American Journal of Tropical Medicine and Hygiene
Dziedzom K de Souza, Rashid Ansumana, Santigie Sessay, Abu Conteh, Benjamin Koudou, Maria P Rebollo, Joseph Koroma, Daniel A Boakye, Moses J Bockarie
BACKGROUND: Many countries have made significant progress in the implementation of World Health Organization recommended preventive chemotherapy strategy, to eliminate lymphatic filariasis (LF). However, pertinent challenges such as the existence of areas of residual infections in disease endemic districts pose potential threats to the achievements made. Thus, this study was undertaken to assess the importance of these areas in implementation units (districts) where microfilaria (MF) positive individuals could not be found during the mid-term assessment after three rounds of mass drug administration...
September 24, 2015: Parasites & Vectors
Omar Cantillo-Barraza, Edilson Garcés, Andrés Gómez-Palacio, Luis A Cortés, André Pereira, Paula L Marcet, Ana M Jansen, Omar Triana-Chávez
BACKGROUND: In Colombia, Rhodnius prolixus and Triatoma dimidiata are the main domestic triatomine species known to transmit T. cruzi. However, there are multiple reports of T. cruzi transmission involving secondary vectors. In this work, we carried out an eco-epidemiological study on Margarita Island, located in the Caribbean region of Colombia, where Chagas disease is associated with non-domiciliated vectors. METHODS: To understand the transmission dynamics of Trypanosoma cruzi in this area, we designed a comprehensive, multi-faceted study including the following: (i) entomological evaluation through a community-based insect-surveillance campaign, blood meal source determination and T...
2015: Parasites & Vectors
Julie-Anne A Tangena, Phoutmany Thammavong, Alexandra Hiscox, Steve W Lindsay, Paul T Brey
Estimating the exposure of individuals to mosquito-borne diseases is a key measure used to evaluate the success of vector control operations. The gold standard is to use human landing catches where mosquitoes are collected off the exposed limbs of human collectors. This is however an unsatisfactory method since it potentially exposes individuals to a range of mosquito-borne diseases. In this study several sampling methods were compared to find a method that is representative of the human-biting rate outdoors, but which does not expose collectors to mosquito-borne infections...
2015: PloS One
Víctor Alberto Olano, María Inés Matiz, Audrey Lenhart, Laura Cabezas, Sandra Lucía Vargas, Juan Felipe Jaramillo, Diana Sarmiento, Neal Alexander, Thor Axel Stenström, Hans J Overgaard
Dengue and other vector-borne diseases are of great public health importance in Colombia. Vector surveillance and control activities are often focused at the household level. Little is known about the importance of nonhousehold sites, including schools, in maintaining vector-borne disease transmission. The objectives of this paper were to determine the mosquito species composition in rural schools in 2 municipalities in Colombia and to assess the potential risk of vector-borne disease transmission in school settings...
September 2015: Journal of the American Mosquito Control Association
Leyanna George, Audrey Lenhart, Joao Toledo, Adhara Lazaro, Wai Wai Han, Raman Velayudhan, Silvia Runge Ranzinger, Olaf Horstick
The application of the organophosphate larvicide temephos to water storage containers is one of the most commonly employed dengue vector control methods. This systematic literature review is to the knowledge of the authors the first that aims to assess the community-effectiveness of temephos in controlling both vectors and dengue transmission when delivered either as a single intervention or in combination with other interventions. A comprehensive literature search of 6 databases was performed (PubMed, WHOLIS, GIFT, CDSR, EMBASE, Wiley), grey literature and cross references were also screened for relevant studies...
2015: PLoS Neglected Tropical Diseases
Fong-Shue Chang, Yao-Ting Tseng, Pi-Shan Hsu, Chaur-Dong Chen, Ie-Bin Lian, Day-Yu Chao
BACKGROUND: Despite dengue dynamics being driven by complex interactions between human hosts, mosquito vectors and viruses that are influenced by climate factors, an operational model that will enable health authorities to anticipate the outbreak risk in a dengue non-endemic area has not been developed. The objectives of this study were to evaluate the temporal relationship between meteorological variables, entomological surveillance indices and confirmed dengue cases; and to establish the threshold for entomological surveillance indices including three mosquito larval indices [Breteau (BI), Container (CI) and House indices (HI)] and one adult index (AI) as an early warning tool for dengue epidemic...
2015: PLoS Neglected Tropical Diseases
Tarekegn A Abeku, Michelle E H Helinski, Matthew J Kirby, Takele Kefyalew, Tessema Awano, Esey Batisso, Gezahegn Tesfaye, James Ssekitooleko, Sarala Nicholas, Laura Erdmanis, Angela Nalwoga, Chris Bass, Stephen Cose, Ashenafi Assefa, Zelalem Kebede, Tedila Habte, Vincent Katamba, Anthony Nuwa, Stella Bakeera-Ssali, Sarah C Akiror, Irene Kyomuhagi, Agonafer Tekalegne, Godfrey Magumba, Sylvia R Meek
BACKGROUND: Scale-up of malaria interventions seems to have contributed to a decline in the disease but other factors may also have had some role. Understanding changes in transmission and determinant factors will help to adapt control strategies accordingly. METHODS: Four sites in Ethiopia and Uganda were set up to monitor epidemiological changes and effectiveness of interventions over time. Here, results of a survey during the peak transmission season of 2012 are reported, which will be used as baseline for subsequent surveys and may support adaptation of control strategies...
2015: Malaria Journal
Mikkel Brydegaard
In recent years, the field of remote sensing of birds and insects in the atmosphere (the aerial fauna) has advanced considerably, and modern electro-optic methods now allow the assessment of the abundance and fluxes of pests and beneficials on a landscape scale. These techniques have the potential to significantly increase our understanding of, and ability to quantify and manage, the ecological environment. This paper presents a concept whereby laser radar observations of atmospheric fauna can be parameterized and table values for absolute cross sections can be catalogued to allow for the study of focal species such as disease vectors and pests...
2015: PloS One
Gabriel Zorello Laporta, Yvonne-Marie Linton, Richard C Wilkerson, Eduardo Sterlino Bergo, Sandra Sayuri Nagaki, Denise Cristina Sant'Ana, Maria Anice Mureb Sallum
BACKGROUND: Malaria remains a significant public health issue in South America. Future climate change may influence the distribution of the disease, which is dependent on the distribution of those Anopheles mosquitoes competent to transmit Plasmodium falciparum. Herein, predictive niche models of the habitat suitability for P. falciparum, the current primary vector Anopheles darlingi and nine other known and/or potential vector species of the Neotropical Albitarsis Complex, were used to document the current situation and project future scenarios under climate changes in South America in 2070...
2015: Parasites & Vectors
Fabrice Courtin, Mamadou Camara, Jean-Baptiste Rayaisse, Moise Kagbadouno, Emilie Dama, Oumou Camara, Ibrahima S Traoré, Jérémi Rouamba, Moana Peylhard, Martin B Somda, Mamadou Leno, Mike J Lehane, Steve J Torr, Philippe Solano, Vincent Jamonneau, Bruno Bucheton
BACKGROUND: Control of gambiense sleeping sickness, a neglected tropical disease targeted for elimination by 2020, relies mainly on mass screening of populations at risk and treatment of cases. This strategy is however challenged by the existence of undetected reservoirs of parasites that contribute to the maintenance of transmission. In this study, performed in the Boffa disease focus of Guinea, we evaluated the value of adding vector control to medical surveys and measured its impact on disease burden...
2015: PLoS Neglected Tropical Diseases
William J Moss, Grant Dorsey, Ivo Mueller, Miriam K Laufer, Donald J Krogstad, Joseph M Vinetz, Mitchel Guzman, Angel M Rosas-Aguirre, Socrates Herrera, Myriam Arevalo-Herrera, Laura Chery, Ashwani Kumar, Pradyumna K Mohapatra, Lalitha Ramanathapuram, H C Srivastava, Liwang Cui, Guofa Zhou, Daniel M Parker, Joaniter Nankabirwa, James W Kazura
Understanding the epidemiological features and metrics of malaria in endemic populations is a key component to monitoring and quantifying the impact of current and past control efforts to inform future ones. The International Centers of Excellence for Malaria Research (ICEMR) has the opportunity to evaluate the impact of malaria control interventions across endemic regions that differ in the dominant Plasmodium species, mosquito vector species, resistance to antimalarial drugs and human genetic variants thought to confer protection from infection and clinical manifestations of plasmodia infection...
September 2015: American Journal of Tropical Medicine and Hygiene
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"