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https://www.readbyqxmd.com/read/27904814/a-qualitative-view-of-the-hiv-epidemic-in-coastal-ecuador
#1
Adam L Beckman, Magdalena M Wilson, Vishaal Prabhu, Nicola Soekoe, Humberto Mata, Lauretta E Grau
In 2013 approximately 37,000 people were living with HIV in Ecuador (prevalence 0.4%), representing a generalized epidemic where most new infections arise from sexual interactions in the general population. Studies that examine attitudes towards people living with HIV (PLWH), individual risk perception of acquiring HIV amongst Ecuadorians, and the ways in which levels of risk perception may affect risk behaviors are lacking. This qualitative study aimed to fill this gap in the literature by investigating these issues in the rural, coastal community of Manglaralto, Ecuador, which has among the highest incidence of HIV in Ecuador...
2016: PeerJ
https://www.readbyqxmd.com/read/27903286/carrion-s-disease-an-eradicable-illness
#2
Cláudia Gomes, Maria J Pons, Juana Del Valle Mendoza, Joaquim Ruiz
Carrion's disease is a neglected tropical disease caused by Bartonella bacilliformis, a vector-borne pathogen restricted to the Andean valleys of Peru, Ecuador and Colombia. Carrion's disease is a biphasic illness; in the acute phase the case-fatality rate can be as high as 88 %, related to high parasitemia, arriving to almost all erythrocytes, and secondary bacterial infections close related with the development of transient immunosuppression in the earlier illness phases. In addition, there are an undefined number of asymptomatic carriers that are reservoirs of the etiological agent of Carrion's disease in endemic areas, they make take into account due to they are the perpetuators of this disease...
December 1, 2016: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/27900468/complete-genome-sequence-of-a-variant-of-maize-associated-totivirus-from-ecuador
#3
Robert A Alvarez-Quinto, Rodrigo F Espinoza-Lozano, Carlos A Mora-Pinargote, Diego F Quito-Avila
The complete genomic sequence of a variant of the recently reported maize-associated totivirus (MATV) from China was obtained from commercial maize in Ecuador. The genome of MATV-Ec (Ecuador) (4,998 bp) is considerably longer than that of MATV-Ch (China) (3,956 bp), the main difference due to a ≈ 1-kb-long capsid-protein-encoding fragment that is completely absent from the Chinese genome. Sequence alignments between MATV-Ec and MATV-Ch showed an overall identity of 82% at the nucleotide level, whereas at the amino acid level, the viruses exhibited 95% and 94% identity for the putative capsid protein and the RNA-dependent RNA polymerase (RdRp), respectively...
November 30, 2016: Archives of Virology
https://www.readbyqxmd.com/read/27894320/successful-malaria-elimination-in-the-ecuador-peru-border-region-epidemiology-and-lessons-learned
#4
Lyndsay K Krisher, Jesse Krisher, Mariano Ambuludi, Ana Arichabala, Efrain Beltrán-Ayala, Patricia Navarrete, Tania Ordoñez, Mark E Polhemus, Fernando Quintana, Rosemary Rochford, Mercy Silva, Juan Bazo, Anna M Stewart-Ibarra
BACKGROUND: In recent years, malaria (Plasmodium vivax and Plasmodium falciparum) has been successfully controlled in the Ecuador-Peru coastal border region. The aim of this study was to document this control effort and to identify the best practices and lessons learned that are applicable to malaria control and to other vector-borne diseases. A proximal outcome evaluation was conducted of the robust elimination programme in El Oro Province, Ecuador, and the Tumbes Region, Peru. Data collection efforts included a series of workshops with local public health experts who played central roles in the elimination effort, review of epidemiological records from Ministries of Health, and a review of national policy documents...
November 28, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27891694/genetic-variation-in-blue-whales-in-the-eastern-pacific-implication-for-taxonomy-and-use-of-common-wintering-grounds
#5
R G LeDuc, E I Archer, A R Lang, K K Martien, B Hancock-Hanser, J PTorres-Florez, R Hucke-Gaete, H R Rosenbaum, K van Waerebeek, R L Brownell, B L Taylor
Many aspects of blue whale biology are poorly understood. Some of the gaps in our knowledge, such as those regarding their basic taxonomy and seasonal movements, directly affect our ability to monitor and manage blue whale populations. As a step towards filling in some of these gaps, microsatellite and mtDNA sequence analyses were conducted on blue whale samples from the Southern Hemisphere, the eastern tropical Pacific (ETP), and the northeast Pacific. The results indicate that the ETP is differentially used by blue whales from the northern and southern eastern Pacific, with the former showing stronger affinity to the region off Central America known as the Costa Rican Dome, and the latter favoring the waters of Peru and Ecuador...
November 27, 2016: Molecular Ecology
https://www.readbyqxmd.com/read/27884213/regional-variation-in-ascaris-lumbricoides-and-trichuris-trichiura-infections-by-age-cohort-and-sex-effects-of-market-integration-among-the-indigenous-shuar-of-amazonian-ecuador
#6
Theresa E Gildner, Tara J Cepon-Robins, Melissa A Liebert, Samuel S Urlacher, Felicia C Madimenos, J Josh Snodgrass, Lawrence S Sugiyama
BACKGROUND: Soil-transmitted helminth (STH) infection peaks during childhood and varies by sex. The impact of market integration (MI) (increasing production for and consumption from a market-based economy) on these infection patterns, however, is unclear. In this study, STH infection is examined by sex and age among indigenous Shuar inhabiting two regions of Amazonian Ecuador: (1) the modestly market-integrated Upano Valley (UV) and (2) the more traditional Cross-Cutucú (CC) region. METHODS: Kato-Katz fecal smears were examined for parasite presence and infection intensity...
November 24, 2016: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/27882467/are-there-keystone-mycorrhizal-fungi-associated-to-tropical-epiphytic-orchids
#7
Stefania Cevallos, Aminael Sánchez-Rodríguez, Cony Decock, Stéphane Declerck, Juan Pablo Suárez
In epiphytic orchids, distinctive groups of fungi are involved in the symbiotic association. However, little is known about the factors that determine the mycorrhizal community structure. Here, we analyzed the orchid mycorrhizal fungi communities associated with three sympatric Cymbidieae epiphytic tropical orchids (Cyrtochilum flexuosum, Cyrtochilum myanthum, and Maxillaria calantha) at two sites located within the mountain rainforest of southern Ecuador. To characterize these communities at each orchid population, the ITS2 region was analyzed by Illumina MiSeq technology...
November 23, 2016: Mycorrhiza
https://www.readbyqxmd.com/read/27879464/severe-pleuropulmonary-paragonimiasis-caused-by-paragonimus-mexicanus-treated-as-tuberculosis-in-ecuador
#8
Manuel Calvopina, Daniel Romero-Alvarez, Rubén Macias, Hiromu Sugiyama
A 30-year-old male, from a subtropical region of Ecuador, was hospitalized with a 5-year history of persistent cough with rusty brown sputum, chest pain, and progressive dyspnea. The patient underwent thoracic surgery 3 years ago for pleural effusion and subsequently received a 9-month regimen treatment of tuberculosis. However, there was no clinical resolution and symptoms became progressively worse. A chest radiograph and computerized tomography scan showed several small nodules in both lungs. Eggs of Paragonimus spp...
November 22, 2016: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27877170/comparison-of-s-stercoralis-serology-performed-on-dried-blood-spots-and-on-conventional-serum-samples
#9
Fabio Formenti, Dora Buonfrate, Rosanna Prandi, Monica Marquez, Cintia Caicedo, Eleonora Rizzi, Angel G Guevara, Yosselin Vicuña, Francisco R Huerlo, Francesca Perandin, Zeno Bisoffi, Mariella Anselmi
Background: Dried blood spots (DBS) are used for epidemiological surveys on infectious diseases in settings where limited resources are available. In fact, DBS can help to overcome logistic difficulties for the collection, transport and storage of biological specimens. Objective: To evaluate the accuracy of Strongyloides stercoralis serology performed on DBS. Methods: A survey was proposed to children attending a school in the village of Borbon, Ecuador, and to their parents/guardians. Each participant gave consent to the collection of both serum and DBS specimens...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27875924/explaining-ethnic-disparities-in-preterm-birth-in-argentina-and-ecuador
#10
George L Wehby, Mariela Pawluk, Kwame A Nyarko, Jorge S López-Camelo
Little is understood about racial/ethnic disparities in infant health in South America. We quantified the extent to which the disparity in preterm birth (PTB; <37 gestational weeks) rate between infants of Native only ancestry and those of European only ancestry in Argentina and Ecuador are explained by household socio-economic, demographic, healthcare use, and geographic location indicators. The samples included 5199 infants born between 2000 and 2011 from Argentina and 1579 infants born between 2001 and 2011 from Ecuador...
November 22, 2016: Global Public Health
https://www.readbyqxmd.com/read/27869792/genomic-diversity-in-onchocerca-volvulus-and-its-wolbachia-endosymbiont
#11
Young-Jun Choi, Rahul Tyagi, Samantha N McNulty, Bruce A Rosa, Philip Ozersky, John Martin, Kymberlie Hallsworth-Pepin, Thomas R Unnasch, Carmelle T Norice, Thomas B Nutman, Gary J Weil, Peter U Fischer, Makedonka Mitreva
Ongoing elimination efforts have altered the global distribution of Onchocerca volvulus, the agent of river blindness, and further population restructuring is expected as efforts continue. Therefore, a better understanding of population genetic processes and their effect on biogeography is needed to support elimination goals. We describe O. volvulus genome variation in 27 isolates from the early 1990s (before widespread mass treatment) from four distinct locales: Ecuador, Uganda, the West African forest and the West African savanna...
November 21, 2016: Nature Microbiology
https://www.readbyqxmd.com/read/27864248/the-challenge-of-universal-eye-health-in-latin-america-distributive-inequality-of-ophthalmologists-in-14-countries
#12
Hannah Hong, Oscar J Mújica, José Anaya, Van C Lansingh, Ellery López, Juan Carlos Silva
BACKGROUND: No comprehensive study currently exists on the supply of ophthalmologists across Latin America. We explored sociogeographic inequalities in the availability and distribution of ophthalmologists across 14 Latin American countries. METHODS: The National Ophthalmologic Societies of Argentina, Bolivia, Brazil, Colombia, Costa Rica, Chile, the Dominican Republic, Ecuador, Guatemala, Mexico, Paraguay, Peru, Uruguay and Venezuela provided data on affiliated ophthalmologists by first-order subnational divisions in 2013...
November 18, 2016: BMJ Open
https://www.readbyqxmd.com/read/27860016/movement-of-aedes-aegypti-following-a-sugar-meal-and-its-implication-in-the-development-of-control-strategies-in-dur%C3%A3-n-ecuador
#13
Whitney A Qualls, Diana P Naranjo, Miguel Angel Subía, Giovanni Ramon, Varsovia Cevallos, Isabel Grijalva, Eduardo Gómez, Kristopher L Arheart, Douglas O Fuller, John C Beier
We evaluated how the presence of sugar sources impacted the distribution of Aedes aegypti in different habitats in Durán, Ecuador. Land cover and normalized difference vegetation index maps were used to guide a random point sampling routine to select study grids (30 m × 30 m) in low vegetation (LV) and high vegetation (HV). Five individual plants, at one home in the LV and HV grid, were treated with a different colored, non-attractive, 60% sucrose solution to determine mosquito feeding and movement. Sugar alone is not attractive to mosquitoes, so spraying vegetation with a dyed sugar solution can be used for visual determination of sugar feeding...
December 2016: Journal of Vector Ecology: Journal of the Society for Vector Ecology
https://www.readbyqxmd.com/read/27859035/no-strong-evidence-for-increasing-liana-abundance-in-the-myristicaceae-of-a-neotropical-aseasonal-rain-forest
#14
James R Smith, Simon A Queenborough, Pablo Alvia, Hugo Romero-Saltos, Renato Valencia
The 'liana dominance hypothesis' posits that lianas are increasing in abundance in tropical forests, thereby potentially reducing tree biomass due to competitive interactions between trees and lianas. This scenario has implications not only for forest ecosystem function and species composition, but also climate change given the mass of carbon stored in tropical trees. In 2003 and 2013 all Myristicaceae trees in the 50-ha Yasuní Forest Dynamics Plot, Ecuador, were surveyed for liana presence and load in their crowns...
November 14, 2016: Ecology
https://www.readbyqxmd.com/read/27855673/gender-and-physician-specialization-and-practice-settings-in-ecuador-a-qualitative-study
#15
Rita Bedoya-Vaca, Kathryn P Derose, Natalia Romero-Sandoval
BACKGROUND: The increasing proportion of women in the medical profession is a worldwide phenomenon often called the "feminization of medicine." However, it is understudied in low and middle-income countries, particularly in Latin America. METHODS: Using a qualitative, descriptive design, we explored the influence of gender and other factors on physician career decision-making and experiences, including medical specialty and public vs. private practice, in Quito, Ecuador, through in-depth, semi-structured interviews (n = 31) in 2014...
November 17, 2016: BMC Health Services Research
https://www.readbyqxmd.com/read/27853401/lenomyrmex-hoelldobleri-a-new-ant-species-discovered-in-the-stomach-of-the-dendrobatid-poison-frog-oophaga-sylvatica-funkhouser
#16
Christian Rabeling, Jeffrey Sosa-Calvo, Lauren A O'Connell, Luis A Coloma, Fernando Fernández
The ant genus Lenomyrmex was recently discovered and described from mid to high elevation rainforests in southern Central and northwestern South America. Lenomyrmex currently consists of six described species, which are only rarely collected. Here, we add a new species, Lenomyrmex hoelldoblerisp. n., which was discovered in a stomach content sample of the dendrobatid frog, Oophaga sylvatica, from northwestern Ecuador. Lenomyrmex hoelldobleri can be distinguished from other species in the genus by the presence of a well-developed petiolar node, whereas in all other species the node of the petiole is ill-defined...
2016: ZooKeys
https://www.readbyqxmd.com/read/27852423/collaboration-between-non-governmental-organizations-and-public-services-in-health-a-qualitative-case-study-from-rural-ecuador
#17
Olivia Biermann, Martin Eckhardt, Siw Carlfjord, Magnus Falk, Birger C Forsberg
BACKGROUND: Non-governmental organizations (NGOs) have a key role in improving health in low- and middle-income countries. Their work needs to be synergistic, complementary to public services, and rooted in community mobilization and collective action. The study explores how an NGO and its health services are perceived by the population that it serves, and how it can contribute to reducing barriers to care. DESIGN: A qualitative exploratory study was conducted in remote Ecuador, characterized by its widespread poverty and lack of official governance...
2016: Global Health Action
https://www.readbyqxmd.com/read/27845059/envenomation-by-bothrops-punctatus-in-southwestern-colombia
#18
Carlos A Cañas, Alexandra Vallejo
Bothrops punctatus (Chocoan forest lancehead) is a semi-arboreal pitviper species distributed in Panamá, Colombia, and Ecuador, whose human envenomation is poorly characterized. We describe two patients bitten by B. punctatus, whose most relevant clinical feature was the development of a severe coagulopathy with few local manifestations (mild edema without signs of necrosis) at the site of the bite. Patients quickly improved their clinical and laboratory abnormalities after polyvalent antivenom application...
December 15, 2016: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/27843530/effects-of-poor-hygiene-on-cytokine-phenotypes-in-children-in-the-tropics
#19
C A Figueiredo, L D Amorim, M Vaca, M E Chico, A C Campos, M L Barreto, P J Cooper
We describe immune phenotypes (innate and adaptive cytokines) according to environmental exposure using latent class analysis. A total of 310 schoolchildren living in Ecuador were assayed for spontaneous cytokine production as well as mitogen (SEB)-stimulated cytokines in whole blood cultures. We collected data on environmental exposures by questionnaire and on intestinal parasites by examination of stool samples. Latent class analysis (LCA) was used to group children according to their innate (IL-6, IL-8, IL-10 and TNF-α) and adaptive (IL-5, IL-13, IL-17, IFN-γ and IL-10) cytokine profile...
2016: World Allergy Organization Journal
https://www.readbyqxmd.com/read/27843127/a-community-based-positive-deviance-hearth-infant-and-young-child-nutrition-intervention-in-ecuador-improved-diet-and-reduced-underweight
#20
Marion L Roche, Grace S Marquis, Theresa W Gyorkos, Brittany Blouin, Julieta Sarsoza, Harriet V Kuhnlein
OBJECTIVE: Underweight and stunting are serious problems in Ecuador that require interventions in the first 2 years of life. The researchers assessed the effectiveness of a Positive Deviance (PD)/Hearth community-based intervention using local foods to improve infant and young children's nutrition. DESIGN: A quasi-experimental nonrandomized study was conducted between March and October, 2009. SETTING: The intervention and study were implemented in the Ecuadorian highlands provinces of Chimborazo and Tungurahua...
November 11, 2016: Journal of Nutrition Education and Behavior
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