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Ledien J, Cucunubá ZM, Parra-Henao G, Rodríguez-Monguí E, Dobson AP, Adamo SB, Castellanos LG, Basáñez MG, Nouvellet P. From serological surveys to disease burden: a modelling pipeline for Chagas disease. Philos Trans R Soc Lond B Biol Sci 2023; 378:20220278. [PMID: 37598701 PMCID: PMC10440172 DOI: 10.1098/rstb.2022.0278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 06/29/2023] [Indexed: 08/22/2023] Open
Abstract
In 2012, the World Health Organization (WHO) set the elimination of Chagas disease intradomiciliary vectorial transmission as a goal by 2020. After a decade, some progress has been made, but the new 2021-2030 WHO roadmap has set even more ambitious targets. Innovative and robust modelling methods are required to monitor progress towards these goals. We present a modelling pipeline using local seroprevalence data to obtain national disease burden estimates by disease stage. Firstly, local seroprevalence information is used to estimate spatio-temporal trends in the Force-of-Infection (FoI). FoI estimates are then used to predict such trends across larger and fine-scale geographical areas. Finally, predicted FoI values are used to estimate disease burden based on a disease progression model. Using Colombia as a case study, we estimated that the number of infected people would reach 506 000 (95% credible interval (CrI) = 395 000-648 000) in 2020 with a 1.0% (95%CrI = 0.8-1.3%) prevalence in the general population and 2400 (95%CrI = 1900-3400) deaths (approx. 0.5% of those infected). The interplay between a decrease in infection exposure (FoI and relative proportion of acute cases) was overcompensated by a large increase in population size and gradual population ageing, leading to an increase in the absolute number of Chagas disease cases over time. This article is part of the theme issue 'Challenges and opportunities in the fight against neglected tropical diseases: a decade from the London Declaration on NTDs'.
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Affiliation(s)
- Julia Ledien
- School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9RH, UK
| | - Zulma M. Cucunubá
- Departamento de Epidemiología Clínica y Bioestadística, Facultad de Medicina, Universidad Pontificia Javeriana, 110231 Bogotá, Colombia
| | - Gabriel Parra-Henao
- Centro de Investigación en Salud para el Trópico, Universidad Cooperativa de Colombia, 470002, Santa Marta, Colombia
- National Institute of Health, 111321 Bogotá, Colombia
| | - Eliana Rodríguez-Monguí
- Departamento de Epidemiología Clínica y Bioestadística, Facultad de Medicina, Universidad Pontificia Javeriana, 110231 Bogotá, Colombia
- Independent consultant to the Neglected, Tropical and Vector Borne Diseases Program, Pan American Health Organization (PAHO), Colombia
| | - Andrew P. Dobson
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544, USA
| | - Susana B. Adamo
- Center for International Earth Science Information Network (CIESIN), Columbia Climate School, Columbia University, New York, NY 10025, USA
| | - Luis Gerardo Castellanos
- Department of Communicable Diseases and Environmental Determinants of Health, Pan American Health Organization (PAHO), Washington, DC 20037, USA
| | - María-Gloria Basáñez
- London Centre for Neglected Tropical Disease Research (LCNTDR) & MRC Centre for Global Infectious Disease Analysis (GIDA), Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London, London SW7 2AZ, UK
| | - Pierre Nouvellet
- School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9RH, UK
- London Centre for Neglected Tropical Disease Research (LCNTDR) & MRC Centre for Global Infectious Disease Analysis (GIDA), Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London, London SW7 2AZ, UK
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2
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Laiton-Donato K, Guzmán C, Perdomo-Balaguera E, Sarmiento L, Torres-Fernandez O, Ruiz HA, Rosales-Munar A, Peláez-Carvajal D, Navas MC, Wong MC, Junglen S, Ajami NJ, Parra-Henao G, Usme-Ciro JA. Novel Putative Tymoviridae-like Virus Isolated from Culex Mosquitoes in Colombia. Viruses 2023; 15:v15040953. [PMID: 37112933 PMCID: PMC10143313 DOI: 10.3390/v15040953] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 03/31/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023] Open
Abstract
The family Tymoviridae comprises positive-sense RNA viruses, which mainly infect plants. Recently, a few Tymoviridae-like viruses have been found in mosquitoes, which feed on vertebrate sources. We describe a novel Tymoviridae-like virus, putatively named, Guachaca virus (GUAV), isolated from Culex pipiens and Culex quinquefasciatus species of mosquitoes and collected in the rural area of Santa Marta, Colombia. After a cytopathic effect was observed in C6/36 cells, RNA was extracted and processed through the NetoVIR next-generation sequencing protocol, and data were analyzed through the VirMAP pipeline. Molecular and phenotypic characterization of the GUAV was achieved using a 5'/3' RACE, transmission electron microscopy, amplification in vertebrate cells, and phylogenetic analysis. A cytopathic effect was observed in C6/36 cells three days post-infection. The GUAV genome was successfully assembled, and its polyadenylated 3' end was corroborated. GUAV shared only 54.9% amino acid identity with its closest relative, Ek Balam virus, and was grouped with the latter and other unclassified insect-associated tymoviruses in a phylogenetic analysis. GUAV is a new member of a family previously described as comprising plant-infecting viruses, which seem to infect and replicate in mosquitoes. The sugar- and blood-feeding behavior of the Culex spp., implies a sustained contact with plants and vertebrates and justifies further studies to unravel the ecological scenario for transmission.
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Affiliation(s)
- Katherine Laiton-Donato
- CIST-Centro de Investigación en Salud para el Trópico, Facultad de Medicina, Universidad Cooperativa de Colombia, Santa Marta 470003, Colombia
- Grupo de Virología, Dirección de Redes en Salud Pública, Instituto Nacional de Salud, Bogota 111321, Colombia
- Grupo Genómica de Microorganismos Emergentes, Dirección de Investigación en Salud Pública, Instituto Nacional de Salud, Bogota 111321, Colombia
| | - Camila Guzmán
- Grupo de Virología, Dirección de Redes en Salud Pública, Instituto Nacional de Salud, Bogota 111321, Colombia
| | - Erik Perdomo-Balaguera
- CIST-Centro de Investigación en Salud para el Trópico, Facultad de Medicina, Universidad Cooperativa de Colombia, Santa Marta 470003, Colombia
- Secretaría de Salud Distrital, Programa de Enfermedades Transmitidas por Vectores, Santa Marta 470004, Colombia
| | - Ladys Sarmiento
- Grupo de Morfología Celular, Dirección de Investigación en Salud Pública, Instituto Nacional de Salud, Bogota 111321, Colombia
| | - Orlando Torres-Fernandez
- Grupo de Morfología Celular, Dirección de Investigación en Salud Pública, Instituto Nacional de Salud, Bogota 111321, Colombia
| | - Héctor Alejandro Ruiz
- Grupo Genómica de Microorganismos Emergentes, Dirección de Investigación en Salud Pública, Instituto Nacional de Salud, Bogota 111321, Colombia
| | - Alicia Rosales-Munar
- Grupo Genómica de Microorganismos Emergentes, Dirección de Investigación en Salud Pública, Instituto Nacional de Salud, Bogota 111321, Colombia
| | - Dioselina Peláez-Carvajal
- Grupo de Virología, Dirección de Redes en Salud Pública, Instituto Nacional de Salud, Bogota 111321, Colombia
| | - Maria-Cristina Navas
- Grupo de Gastrohepatología, Facultad de Medicina, Universidad de Antioquia, Medellin 050010, Colombia
| | - Matthew C Wong
- Platform for Innovative Microbiome and Translational Research (PRIME-TR), Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Viroworks, Houston, TX 77030, USA
| | - Sandra Junglen
- Institute of Virology, Charité Universitätsmedizin Berlin, Corporate Member of Free University Berlin, Humboldt-University Berlin, and Berlin Institute of Health, 10117 Berlin, Germany
| | - Nadim J Ajami
- Platform for Innovative Microbiome and Translational Research (PRIME-TR), Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Viroworks, Houston, TX 77030, USA
| | - Gabriel Parra-Henao
- CIST-Centro de Investigación en Salud para el Trópico, Facultad de Medicina, Universidad Cooperativa de Colombia, Santa Marta 470003, Colombia
| | - José A Usme-Ciro
- CIST-Centro de Investigación en Salud para el Trópico, Facultad de Medicina, Universidad Cooperativa de Colombia, Santa Marta 470003, Colombia
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Laiton-Donato K, Quintero-Cortés P, Franco-Salazar JP, Peláez-Carvajal D, Navas MC, Junglen S, Parra-Henao G, Usme-Ciro JA. Usefulness of an in vitro-transcribed RNA control for the detection and quantification of Yellow fever virus through real-time reverse transcription-polymerase chain reaction. Infect Dis Now 2023; 53:104654. [PMID: 36709865 DOI: 10.1016/j.idnow.2023.104654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 01/09/2023] [Accepted: 01/20/2023] [Indexed: 01/27/2023]
Abstract
INTRODUCTION Unvaccinated individuals in endemic areas with proven enzootic transmission of Yellow fever virus are at risk of infection due to a dramatic shift in the epidemiology of the disease over recent years. For this reason, epidemiological surveillance and laboratory confirmation of cases have become mandatory. OBJECTIVE To develop and test a control RNA for YFV detection through real-time RT-PCR. METHODS A 437-bp insert containing the T7 promoter and the target sequences for two different in-house protocols was designed in the context of the pUC57 vector and obtained through gene synthesis. After T7-driven in vitro transcription, standard curves were developed for Log10 serial dilutions of the YFV control RNA with 8 replicates. RESULTS A dynamic range of quantification of 10 orders of magnitude was observed with a limit of detection of 6.3 GCE/µL (95% CI, 2.6 to 139.4 GCE/µL). CONCLUSION The plasmid construct is available for YFV molecular test validation on clinical, entomological, and epizootic samples.
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Affiliation(s)
- Katherine Laiton-Donato
- Grupo de Genómica de Microorganismos Emergentes. Dirección de Investigación en Salud Pública, Instituto Nacional de Salud, Bogotá, Colombia; CIST-Centro de Investigación en Salud para el Trópico, Facultad de Medicina, Universidad Cooperativa de Colombia, Santa Marta, Colombia
| | - Paula Quintero-Cortés
- CIST-Centro de Investigación en Salud para el Trópico, Facultad de Medicina, Universidad Cooperativa de Colombia, Santa Marta, Colombia
| | - Juan P Franco-Salazar
- CIST-Centro de Investigación en Salud para el Trópico, Facultad de Medicina, Universidad Cooperativa de Colombia, Santa Marta, Colombia
| | - Dioselina Peláez-Carvajal
- Grupo de Genómica de Microorganismos Emergentes. Dirección de Investigación en Salud Pública, Instituto Nacional de Salud, Bogotá, Colombia
| | - Maria-Cristina Navas
- Grupo de Gastrohepatología, Facultad de Medicina, Sede de Investigación Universitaria, Universidad de Antioquia, Medellín, Colombia
| | - Sandra Junglen
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Gabriel Parra-Henao
- CIST-Centro de Investigación en Salud para el Trópico, Facultad de Medicina, Universidad Cooperativa de Colombia, Santa Marta, Colombia
| | - Jose A Usme-Ciro
- Grupo de Genómica de Microorganismos Emergentes. Dirección de Investigación en Salud Pública, Instituto Nacional de Salud, Bogotá, Colombia; CIST-Centro de Investigación en Salud para el Trópico, Facultad de Medicina, Universidad Cooperativa de Colombia, Santa Marta, Colombia.
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Marín-Ortiz JC, Parra-Henao G, Altamiranda-Saavedra M, Jaramillo-O N. Characterization of Feeding Behavior and its Relationship With the Longevity of Wild and Peridomestic Triatoma dimidiata, Latreille 1811 (Hemiptera, Reduviidae) Under Laboratory Conditions. J Med Entomol 2022; 59:1911-1920. [PMID: 35980342 DOI: 10.1093/jme/tjac122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Indexed: 06/15/2023]
Abstract
Triatoma dimidiata (Latreille 1811) is considered the second most important vector of the Trypanosa cruzi etiological agent of Chagas disease in Colombia. It has a life cycle that involves a domiciled, peridomiciled, and wild distribution. The study of feeding behavior and its influence on the survival of sylvatic and peridomestic populations can help identify a possible differential risk in the transmission of Chagas disease to humans, mainly in northwestern and east-central Colombia. We characterize the main parameters of feeding behavior and their influence on the longevity and survival of two rat-fed populations of T. dimidiata from Colombia, one in the north-west (from palms in a tropical dry forest area) and the other in the center-east (peridomiciliated), under controlled environmental conditions. The palm population took considerably longer than the peridomestic population to complete its life cycle under experimental laboratory conditions, being both populations univoltine since they have only one life cycle per year. Statistically significant differences were evidenced using Box-Cox model between the survival rates of T. dimidiata populations when the parameters related to blood intake and behavior were incorporated, in contrast to the survival models in which the origin only was considered as a factor. Our results could be used to generate recommendations to guide prevention strategies in communities near sylvatic and peridomiciliated populations of T. dimidiata.
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Affiliation(s)
- Juan Carlos Marín-Ortiz
- Grupo de Investigación Fitotecnia Tropical, Universidad Nacional de Colombia, Medellín, Colombia
| | - Gabriel Parra-Henao
- Centro de Investigación en Salud para el Trópico (CIST), Universidad Cooperativa de Colombia, Santa Marta, Colombia
- National Institute of Health, Bogotá, Colombia
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Parra-Henao G, Vera MJ. Chagas’ disease: achievements and perspectives in Colombia. Biomedica 2022; 42:213-217. [PMID: 35867914 PMCID: PMC9342947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Indexed: 10/29/2022]
Affiliation(s)
- Gabriel Parra-Henao
- Instituto Nacional de Salud, Bogotá, D.C.Instituto Nacional de SaludBogotá, D.C.
| | - Mauricio Javier Vera
- Ministerio de Salud y Protección Social, Bogotá, D.C.Ministerio de Salud y Protección SocialBogotá, D.C.
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Quiros-Gomez O, Segura-Cardona Á, Flórez PA, Pinto N, Medina M, Henao-Martínez AF, Olivera MJ, Parra-Henao G. Risk factors and spatial analysis for domiciliary infestation with the Chagas disease vector Triatoma venosa in Colombia. Ther Adv Infect Dis 2022; 9:20499361221084164. [PMID: 35321343 PMCID: PMC8935413 DOI: 10.1177/20499361221084164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 02/10/2022] [Indexed: 11/17/2022] Open
Abstract
Background: In Colombia, communities living in the Andean region are the most affected by Chagas disease due to the presence of the main vectors, the environmental and risk factors associated with house infestation. Triatoma venosa is classified as a secondary vector that is frequently found in the departments of Boyaca and Cundinamarca, but epidemiological information and its association with risk factors in domestic and peridomestic areas is unknown. The study aimed to evaluate housing and environmental characteristics associated with domestic and peridomestic infestation by T. venosa and a risk map was estimated. Methods: A cross-sectional study was conducted in municipalities of Boyaca and Cundinamarca, Colombia. From March to July 2015, triatomine infestation screening surveys were conducted in 155 households. Multivariate analysis was performed to evaluate associations with the infestation and ecological niche modeling was estimated using environmental variables. Results: No statistical association was found with any of the housing variables in the adjusted multivariate analysis. However, in raw relationship infestation was associated with bushes < 10 m (OR = 3; 95% CI: 1.3–7.3) and higher temperature p value < 0.05. The developed final risk map pointed to 12 municipalities with no previous report of the disease, which should be sampled for the presence of T. venosa. Conclusion: This study highlights the relationship between environmental factors and T. venosa in Colombia and the importance of modeling tools to improve mapping efforts. Additional studies are needed to verify the association with bushes and higher temperatures and to verify infestation in predicted risk area with no previous report of the species
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Affiliation(s)
- Oscar Quiros-Gomez
- Grupo de Epidemiología y Bioestadística, Universidad CES, Medellín, Colombia
| | | | | | - Néstor Pinto
- Departamento de Cundinamarca, Secretaria de Salud, Bogotá, Colombia
| | - Manuel Medina
- Departamento de Boyacá, Secretaria de Salud, Tunja, Colombia
| | | | | | - Gabriel Parra-Henao
- Instituto Nacional de Salud, Bogotá, Colombia and Centro de Investigación en Salud para el Trópico, Universidad Cooperativa de Colombia, Santa Marta, Av. Cll 26 N° 51-20 Bogotá, 52162 Colombia
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7
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Ledien J, Cucunubá ZM, Parra-Henao G, Rodríguez-Monguí E, Dobson AP, Basáñez MG, Nouvellet P. Spatiotemporal variations in exposure: Chagas disease in Colombia as a case study. BMC Med Res Methodol 2022; 22:13. [PMID: 35027002 PMCID: PMC8759231 DOI: 10.1186/s12874-021-01477-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 11/15/2021] [Indexed: 11/29/2022] Open
Abstract
Age-stratified serosurvey data are often used to understand spatiotemporal trends in disease incidence and exposure through estimating the Force-of-Infection (FoI). Typically, median or mean FoI estimates are used as the response variable in predictive models, often overlooking the uncertainty in estimated FoI values when fitting models and evaluating their predictive ability. To assess how this uncertainty impact predictions, we compared three approaches with three levels of uncertainty integration. We propose a performance indicator to assess how predictions reflect initial uncertainty. In Colombia, 76 serosurveys (1980–2014) conducted at municipality level provided age-stratified Chagas disease prevalence data. The yearly FoI was estimated at the serosurvey level using a time-varying catalytic model. Environmental, demographic and entomological predictors were used to fit and predict the FoI at municipality level from 1980 to 2010 across Colombia. A stratified bootstrap method was used to fit the models without temporal autocorrelation at the serosurvey level. The predictive ability of each model was evaluated to select the best-fit models within urban, rural and (Amerindian) indigenous settings. Model averaging, with the 10 best-fit models identified, was used to generate predictions. Our analysis shows a risk of overconfidence in model predictions when median estimates of FoI alone are used to fit and evaluate models, failing to account for uncertainty in FoI estimates. Our proposed methodology fully propagates uncertainty in the estimated FoI onto the generated predictions, providing realistic assessments of both central tendency and current uncertainty surrounding exposure to Chagas disease.
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Affiliation(s)
- Julia Ledien
- School of Life Sciences, University of Sussex, Brighton, UK.
| | - Zulma M Cucunubá
- London Centre for Neglected Tropical Disease Research & MRC Centre for Global Infectious Disease Analysis, Imperial College London, London, UK.,Departamento de Epidemiología Clínica y Bioestadística, Facultad de Medicina, Universidad Javeriana, Bogotá, Colombia
| | - Gabriel Parra-Henao
- Centro de Investigación en Salud para el Trópico, Universidad Cooperativa de Colombia, Santa Marta, Colombia.,National Institute of Health, Bogotá, Colombia
| | - Eliana Rodríguez-Monguí
- Neglected, Tropical and Vector Borne Diseases Program, Pan American Health Organization (PAHO), Bogotá, Colombia
| | - Andrew P Dobson
- Ecology & Evolutionary Biology, Princeton University, Princeton, USA
| | - María-Gloria Basáñez
- London Centre for Neglected Tropical Disease Research & MRC Centre for Global Infectious Disease Analysis, Imperial College London, London, UK
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8
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Olivera MJ, Arévalo A, Muñoz L, Duque S, Bedoya J, Parra-Henao G. Comparison of 1-year healthcare resource utilization and related costs for patients with heart failure in the Chagas and non-Chagas matched cohorts. Ther Adv Infect Dis 2022; 9:20499361221114270. [PMID: 35898693 PMCID: PMC9310288 DOI: 10.1177/20499361221114270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 06/30/2022] [Indexed: 11/25/2022] Open
Abstract
Background: Chagas disease is one of the leading causes of heart failure (HF) in Latin Americans, and there are limited data available that examine related costs of care for patients with HF. This study aimed to compare healthcare resource utilization and related costs for patients with HF, with and without Chagas disease. Methods: A prospective matched-cohort study comparing the healthcare costs for patients with HF with Chagas disease and care costs for patients with HF without Chagas disease was conducted between January 2019 and December 2019. Only direct costs have been estimated, including hospitalization costs, medications and other cardiovascular interventions, and clinical and laboratory follow-up for up to 1 year. Results: A total of 80 patients with chronic HF were included in the study. Of the 80 patients, 40 patients in the Chagas cohort and 40 patients in the non-Chagas cohort were matched for age, insurer and sex. From a social security system perspective, the total costs for the two cohorts during the study period were U$970,136. Specifically, the healthcare costs for the Chagas cohort were greater than the total healthcare costs for the non-Chagas group (U$511,931 versus U$458,205; p = 0.6183) Most costs were associated with hospitalizations (65.5% versus 59.6%), with averages of U$12,798.5 and U$11,455.1 per person in the Chagas and non-Chagas groups, respectively. In both the Chagas (51.6%) and non-Chagas cohorts (54.5%), causes of readmission unrelated to HF outweighed causes of readmission related to HF. High incidences of hospital admissions were observed during the rainy (cold) season for both cohorts Conclusions: Over a 12-month follow-up period, patients with chronic HF and Chagas consume as many healthcare resources as those with chronic HF and without Chagas. These data highlight the considerable and growing economic burden of HF on the Colombian health system.
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Affiliation(s)
- Mario J Olivera
- Grupo de Parasitología, Instituto Nacional de Salud, Calle 26 CAN #51-20, Bogotá, DC 111321,Colombia
| | - Adriana Arévalo
- Grupo de Parasitología, Instituto Nacional de Salud, Bogotá, DC, Colombia
| | - Lyda Muñoz
- Grupo de Parasitología, Instituto Nacional de Salud, Bogotá, DC, Colombia
| | - Sofía Duque
- Grupo de Parasitología, Instituto Nacional de Salud, Bogotá, DC, Colombia
| | - Juan Bedoya
- Dirección de Investigación, Instituto Nacional de Salud, Bogotá, DC, Colombia
| | - Gabriel Parra-Henao
- Dirección de Investigación, Instituto Nacional de Salud, Bogotá, DC, Colombia
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Sousa ASD, Vermeij D, Parra-Henao G, Lesmo V, Fernández EF, Aruni JJC, Mendes FDSNS, Bohorquez LC, Luquetti AO. The CUIDA Chagas Project: towards the elimination of congenital transmission of Chagas disease in Bolivia, Brazil, Colombia, and Paraguay. Rev Soc Bras Med Trop 2022; 55:e01712022. [PMID: 35522804 PMCID: PMC9070074 DOI: 10.1590/0037-8682-0171-2021] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 04/08/2022] [Indexed: 11/25/2022] Open
Abstract
Background: Mother-to-child transmission of Chagas disease (CD) has become a relevant problem in both endemic and non-endemic areas. Methods: Description of the CUIDA Chagas Project - Communities United for Innovation, Development and Attention for Chagas disease’. Results: Through innovative and strategic research, this project will provide improved diagnostic and treatment options as well as replicable implementation models that are adaptable to different contexts. Conclusions: By integrating test, treat and care actions for CD into primary health care practices, the burden of CD on people and health systems may be significantly reduced.
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Affiliation(s)
| | | | | | - Vidalia Lesmo
- Servicio Nacional de Erradicación del Paludismo, Paraguay
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10
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Muñoz-Gamba AS, Laiton-Donato K, Perdomo-Balaguera E, Castro LR, Usme-Ciro JA, Parra-Henao G. Molecular characterization of mosquitoes (Diptera: Culicidae) from the Colombian rainforest. Rev Inst Med Trop Sao Paulo 2021; 63:e24. [PMID: 33787744 PMCID: PMC7997665 DOI: 10.1590/s1678-9946202163024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 01/19/2021] [Indexed: 11/30/2022] Open
Abstract
A few studies have carried out the taxonomic and molecular characterization of
sylvatic mosquito species in Latin America, where some species have been
incriminated as vectors for arboviruses and parasites transmission. The present
study reports the molecular characterization of mosquito species in the Sierra
Nevada de Santa Marta, a natural ecosystem in the Northern coast of Colombia.
Manual capture methods were used to collect mosquitoes, and the specimens were
identified via classical taxonomy. The COI marker was used for
species confirmation, and phylogenetic analysis was performed using the
neighbor-joining method, with the Kimura-2-Parameters model. Aedes
serratus , Psorophora ferox , Johnbelkinia
ulopus , Sabethes chloropterus , Sabethes
cyaneus , Wyeomyia aporonoma , Wyeomyia
pseudopecten , Wyeomyia ulocoma and
Wyeomyia luteoventralis were identified. We assessed the
genetic variability of mosquitoes in this area and phylogenetic reconstructions
allowed the identification at the species level. Classical and molecular
taxonomy demonstrated to be useful and complementary when morphological
characteristics are not well preserved, or the taxonomic group is not
represented in public molecular databases.
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Affiliation(s)
- Andrew S Muñoz-Gamba
- Universidad Cooperativa de Colombia, Centro de Investigación en Salud para el Trópico, Santa Marta, Colombia.,Universidad de La Salle, Departamento de Ciencias Básicas, Programa de Biología, Bogotá, Colombia
| | - Katherine Laiton-Donato
- Instituto Nacional de Salud, Dirección de Redes en Salud Pública, Grupo de Virología, Bogotá, Colombia
| | - Erick Perdomo-Balaguera
- Secretaría de Salud Distrital, Programa de Enfermedades Transmitidas por Vectores, Santa Marta, Colombia
| | - Lyda R Castro
- Universidad del Magdalena, Grupo de Investigación Evolución, Sistemática y Ecología Molecular, Santa Marta, Colombia
| | - José A Usme-Ciro
- Universidad Cooperativa de Colombia, Centro de Investigación en Salud para el Trópico, Santa Marta, Colombia
| | - Gabriel Parra-Henao
- Universidad Cooperativa de Colombia, Centro de Investigación en Salud para el Trópico, Santa Marta, Colombia.,Instituto Nacional de Salud, Subdirección de Innovación en Salud Publica, Bogotá, Colombia
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Parra-Henao G, Coelho G, Escobar JP, Gonzalvez G, Bezerra H. Beyond the traditional vector control and the need the strengthening integrated vector management in Latin America. Ther Adv Infect Dis 2021; 8:2049936121997655. [PMID: 33717481 PMCID: PMC7922610 DOI: 10.1177/2049936121997655] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
| | - Giovanini Coelho
- Department of Communicable Diseases and Environmental Determinants of Health, Neglected, Tropical and Vector-Borne Diseases, Pan-American Health Organization/World Health Organization, Washington, DC, USA
| | - José Pablo Escobar
- Facultad Nacional de Salud Pública, University of Antioquia, Medellin, Colombia
| | | | - Haroldo Bezerra
- Department of Communicable Diseases and Environmental Determinants of Health, Neglected, Tropical and Vector-Borne Diseases, Pan-American Health Organization/World Health Organization, Washington, DC, USA
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12
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Parra-Henao G, Garzón-Jiménez SP, Bernal-Rosas Y, Olivera MJ, Salgado M, Torres-García OA. Risk factors for triatominae infestation in a municipality of Colombia. Ther Adv Infect Dis 2021; 8:20499361211030068. [PMID: 34290865 PMCID: PMC8274114 DOI: 10.1177/20499361211030068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Accepted: 06/16/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Identifying risk factors for Triatominae infestation is essential for the development of vector control interventions. METHODS To determine the intra- and peridomiciliary risk factors associated with triatomine infestation, a cross-sectional analytical study was carried out with random cluster sampling in two stages, which included the identification of risk factors by survey and direct observation, as well as the search and capture of triatomines. The detection of trypanosomes in triatomines was carried out by observing the rectal content and then by conventional polymerase chain reaction (PCR). RESULTS In 21 of the 207 houses inspected, 13 specimens of R. colombiensis and 19 specimens of P. geniculatus were found. Entomological indices included: dispersion 36%, infestation 10%, infection 65%, colonization 4.7%, density 15%, and concentration 152%. An association was found between the presence of Triatominae and the existence of branches and fissures in the floors, as well as with the presence of accumulated objects and with knowledge about Chagas disease. The risk of having triatomines in urban homes is 5.7 times higher than the risk in rural areas [confidence interval (CI) 0.508-67.567]; 6.6 times in houses with cracked soil (CI 0.555-81.994), 6 times in houses located near caneys (CI 0.820-44.781), and 6.16 times with accumulated objects (CI 1.542-39.238). CONCLUSION Chagas disease is a complex problem that requires control based on the vector's elimination or surveillance, which implies identifying species and their distribution, generating alerts, knowledge, and awareness in the population. It is necessary to intensify surveillance activities for the event, especially in changing aspects of Chagas diseases' transmission dynamics, such as urbanization and the type of housing associated with the vector's presence.
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Affiliation(s)
- Gabriel Parra-Henao
- Instituto Nacional de Salud, Bogotá, Colombia
- Centro de Investigación en Salud para el Trópico, Universidad Cooperativa de Colombia, Santa Marta, Magdalena, Colombia
| | - Sandra P. Garzón-Jiménez
- Facultad de Medicina Veterinaria, Universidad Antonio Nariño, Sede Circunvalar - Bogotá, Colombia
| | - Yuly Bernal-Rosas
- Facultad de Ciencias, Universidad Antonio Nariño, Sede Circunvalar - Bogotá, Colombia
| | - Mario J. Olivera
- Grupo de Parasitología, Instituto Nacional de Salud, Bogotá, Colombia
| | - Marlon Salgado
- Alcaldía Municipal de La Mesa – La Mesa, Cundinamarca, Colombia
| | - Orlando A. Torres-García
- Facultad de Medicina Veterinaria, Universidad Antonio Nariño, Sede Circunvalar - Bogotá, Colombia
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13
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Altamiranda-Saavedra M, Osorio-Olvera L, Yáñez-Arenas C, Marín-Ortiz JC, Parra-Henao G. Geographic abundance patterns explained by niche centrality hypothesis in two Chagas disease vectors in Latin America. PLoS One 2020; 15:e0241710. [PMID: 33147272 PMCID: PMC7641389 DOI: 10.1371/journal.pone.0241710] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 10/19/2020] [Indexed: 11/18/2022] Open
Abstract
Ecoepidemiological scenarios for Chagas disease transmission are complex, so vector control measures to decrease human–vector contact and prevent infection transmission are difficult to implement in all geographic contexts. This study assessed the geographic abundance patterns of two vector species of Chagas disease: Triatoma maculata (Erichson, 1848) and Rhodnius pallescens (Barber, 1932) in Latin America. We modeled their potential distribution using the maximum entropy algorithm implemented in Maxent and calculated distances to their niche centroid by fitting a minimum-volume ellipsoid. In addition, to determine which method would accurately explain geographic abundance patterns, we compared the correlation between population abundance and the distance to the ecological niche centroid (DNC) and between population abundance and Maxent environmental suitability. The potential distribution estimated for T. maculata showed that environmental suitability covers a large area, from Panama to Northern Brazil. R. pallescens showed a more restricted potential distribution, with environmental suitability covering mostly the coastal zone of Costa Rica and some areas in Nicaragua, Honduras, Belize and the Yucatán Peninsula in Mexico, northern Colombia, Acre, and Rondônia states in Brazil, as well as a small region of the western Brazilian Amazon. We found a negative slope in the relationship between population abundance and the DNC in both species. R. pallecens has a more extensive potential latitudinal range than previously reported, and the distribution model for T. maculata corroborates previous studies. In addition, population abundance increases according to the niche centroid proximity, indicating that population abundance is limited by the set of scenopoetic variables at coarser scales (non-interactive variables) used to determine the ecological niche. These findings might be used by public health agencies in Latin America to implement actions and support programs for disease prevention and vector control, identifying areas in which to expand entomological surveillance and maintain chemical control, in order to decrease human–vector contact.
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Affiliation(s)
- Mariano Altamiranda-Saavedra
- Centro de Investigación en Salud para el Trópico (CIST), Universidad Cooperativa de Colombia, Santa Marta, Colombia
- Politécnico Colombiano Jaime Isaza Cadavid, Medellín, Antioquia, Colombia
- * E-mail:
| | - Luis Osorio-Olvera
- Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, Kansas, United States of America
| | - Carlos Yáñez-Arenas
- Laboratorio de Ecología Geográfica, Unidad de Conservación de la Biodiversidad, UMDI-Sisal, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Juan Carlos Marín-Ortiz
- Departamento de Ciencias Agrarias, Universidad Nacional de Colombia, Facultad de Ciencias Agrarias, Medellín, Colombia
| | - Gabriel Parra-Henao
- Centro de Investigación en Salud para el Trópico (CIST), Universidad Cooperativa de Colombia, Santa Marta, Colombia
- National Health Institute (Instituto Nacional de Salud), Bogotá, Colombia
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14
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Chadalawada S, Sillau S, Archuleta S, Mundo W, Bandali M, Parra-Henao G, Rodriguez-Morales AJ, Villamil-Gomez WE, Suárez JA, Shapiro L, Hotez PJ, Woc-Colburn L, DeSanto K, Rassi A, Franco-Paredes C, Henao-Martínez AF. Risk of Chronic Cardiomyopathy Among Patients With the Acute Phase or Indeterminate Form of Chagas Disease: A Systematic Review and Meta-analysis. JAMA Netw Open 2020; 3:e2015072. [PMID: 32865573 PMCID: PMC7489816 DOI: 10.1001/jamanetworkopen.2020.15072] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 06/16/2020] [Indexed: 11/24/2022] Open
Abstract
Importance Chagas cardiomyopathy is associated with substantial morbidity and mortality. Precise estimates of the risk of developing cardiomyopathy among patients with the acute or indeterminate chronic forms of Chagas disease are lacking. Objective To estimate the risk of developing chronic cardiomyopathy in patients with acute and indeterminate chronic forms of Chagas disease. Data Sources A systematic search in the Cochrane Library, Embase, Latin American and Caribbean Health Sciences Literature (LILACS), Medline, and Web of Science Core Collection databases was conducted from October 8 to October 24, 2018. Studies published between January 1, 1946, and October 24, 2018, that were written in the English, Spanish, and Portuguese languages were included. Search terms included Chagas disease; development of cardiomyopathy; latency duration; and determinants of the Chagas latency period. Study Selection Longitudinal observational studies of participants diagnosed with the acute phase of Chagas infection or the indeterminate chronic form of Chagas disease who were followed up until the development of cardiomyopathy were included. Studies were excluded if they did not provide sufficient outcome data. Of 10 761 records initially screened, 32 studies met the criteria for analysis. Data Extraction and Synthesis Critical appraisals of studies were performed using checklists from the Joanna Briggs Institute Reviewer's Manual, and data were collected from published studies. A random-effects meta-analysis was used to obtain pooled estimated annual rates. Data were analyzed from September 11 to December 4, 2019. This study followed the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) reporting guideline for the registration of the protocol, data collection and integrity, assessment of bias, and sensitivity analyses. Main Outcomes and Measures Main outcomes were defined as the composite of the development of any new arrhythmias or changes in electrocardiogram results, dilated cardiomyopathy and segmental wall motion abnormalities in echocardiogram results, and mortality associated with Chagas disease. Results A total of 5005 records were screened for eligibility. Of those, 298 full-text articles were reviewed, and 178 of those articles were considered for inclusion in the quantitative synthesis. After exclusions, 32 studies that included longitudinal observational outcomes were selected for the analysis; 23 of those studies comprised patients with the indeterminate chronic form of Chagas disease, and 9 of those studies comprised patients in the acute phase of Chagas infection. The analysis indicated that the pooled estimated annual rate of cardiomyopathy development was 1.9% (95% CI, 1.3%-3.0%; I2 = 98.0%; τ2 [ln scale] = 0.9992) in patients with indeterminate chronic Chagas disease and 4.6% (95% CI, 2.7%-7.9%; I2 = 86.6%; τ2 [ln scale] = 0.4946) in patients with acute Chagas infection. Conclusions and Relevance Patients with the indeterminate chronic form of Chagas disease had a significant annual risk of developing cardiomyopathy. The annual risk was more than double among patients in the acute phase of Chagas infection.
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Affiliation(s)
| | - Stefan Sillau
- Department of Neurology, University of Colorado Denver, Denver
| | | | | | | | - Gabriel Parra-Henao
- National Institute of Health, Bogotá, Colombia
- Centro de Investigación en Salud para el Trópico (CIST), Universidad Cooperativa de Colombia, Santa Marta, Colombia
| | - Alfonso J. Rodriguez-Morales
- Public Health and Infection Research Group, Faculty of Health Sciences, Universidad Tecnológica de Pereira, Pereira, Risaralda, Colombia
- Grupo de Investigación Biomedicina, Faculty of Medicine, Fundación Universitaria Autónoma de las Américas, Pereira, Risaralda, Colombia
| | | | - José Antonio Suárez
- Investigador Sistema Nacional de Investigación, Secretaría Nacional de Ciencia, Tecnología e Innovación, Clinical Research Department, Instituto Conmemorativo Gorgas de Estudios de la Salud, Panamá City, Panamá
| | - Leland Shapiro
- Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, Colorado
- Division of Infectious Diseases, Department of Medicine, University of Colorado Denver, Denver
| | - Peter J. Hotez
- Texas Children’s Hospital Center for Vaccine Development, Texas Children’s Hospital, Houston, Texas
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas
- Department of Molecular Virology and Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, Texas
| | - Laila Woc-Colburn
- Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia
| | - Kristen DeSanto
- Health Sciences Library, University of Colorado Denver, Aurora
| | - Anis Rassi
- Division of Cardiology, Anis Rassi Hospital, Goiania, Goias, Brazil
| | - Carlos Franco-Paredes
- Division of Infectious Diseases, Department of Medicine, University of Colorado Denver, Denver
- Hospital Infantil de México Federico Gómez, Mexico City, Mexico
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15
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Parra-Henao G, Oliveros H, Hotez PJ, Motoa G, Franco-Paredes C, Henao-Martínez AF. In Search of Congenital Chagas Disease in the Sierra Nevada de Santa Marta, Colombia. Am J Trop Med Hyg 2020; 101:482-483. [PMID: 31264558 DOI: 10.4269/ajtmh.19-0110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Chagas disease remains a major impediment to sustainable socioeconomic development in Latin America. Transplacental transmission explains the persistence of transmission in urban areas, in non-endemic regions, and in areas with an established interrupted vectorial transmission. One of every five cases of congenital Chagas disease in the world occurs in Colombia and Venezuela. The massive migration of impoverished populations from neighboring Venezuela has worsened the situation creating a humanitarian crisis in Northeastern Colombia, including the Sierra Nevada de Santa Marta. The prevalence of Chagas infection among pregnant women in these areas is higher than the national average, and the public health resources are insufficient. This perspective discusses the associated increased morbidity and mortality of congenital Chagas in this region, where stigmatization contributes to the impression among health authorities and the general population that it affects indigenous communities only. The monitoring and control of congenital Chagas disease in the Sierra Nevada of Santa Marta is a public health necessity that demands urgent and effective interventions.
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Affiliation(s)
- Gabriel Parra-Henao
- Centro de Investigación en Salud para el Trópico (CIST), Universidad Cooperativa de Colombia, Santa Marta, Colombia
| | - Horacio Oliveros
- Centro de Investigación en Salud para el Trópico (CIST), Universidad Cooperativa de Colombia, Santa Marta, Colombia
| | - Peter J Hotez
- Department of Biology, Baylor University, Waco, Texas.,Department of Pediatrics, Texas Children's Hospital Center for Vaccine Development, National School of Tropical Medicine, Baylor College of Medicine, Houston, Texas
| | - Gabriel Motoa
- Division of Infectious Diseases, University of Colorado Denver, School of Medicine, Aurora, Colorado
| | - Carlos Franco-Paredes
- Hospital Infantil de México, Federico Gómez, México City, México.,Division of Infectious Diseases, University of Colorado Denver, School of Medicine, Aurora, Colorado
| | - Andrés F Henao-Martínez
- Division of Infectious Diseases, University of Colorado Denver, School of Medicine, Aurora, Colorado
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16
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Franco-Paredes C, Villamil-Gómez WE, Schultz J, Henao-Martínez AF, Parra-Henao G, Rassi A, Rodríguez-Morales AJ, Suarez JA. A deadly feast: Elucidating the burden of orally acquired acute Chagas disease in Latin America - Public health and travel medicine importance. Travel Med Infect Dis 2020; 36:101565. [PMID: 32004732 DOI: 10.1016/j.tmaid.2020.101565] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/24/2020] [Accepted: 01/27/2020] [Indexed: 01/27/2023]
Abstract
Over the past two decades, several countries in Latin American, particularly Brazil, Venezuela, and Colombia, have experienced multiple outbreaks of oral Chagas disease. Transmission occurs secondary to contamination of food or beverages by triatomine (kissing bug) feces containing infective Trypanosoma cruzi metacyclic trypomastigotes. Orally transmitted infections are acute and potentially fatal. Oral Chagas transmission carries important clinical implications from management to public health policies compared to vector-borne transmission. This review aims to discuss the contemporary situation of orally acquired Chagas disease, and its eco-epidemiology, pathogenesis, and clinical management. We also propose preventive public health interventions to reduce the burden of disease and provide important perspectives for travel medicine. Travel health advisors need to counsel intending travellers to South America on avoidance of "deadly feasts" - risky beverages such as fruit juices including guava juice, bacaba, babaçu and palm wine (vino de palma), açai pulp, sugar cane juice and foodstuffs such as wild animal meats that may be contaminated with T. cruzi.
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Affiliation(s)
- Carlos Franco-Paredes
- Division of Infectious Diseases, Department of Medicine, University of Colorado Anschutz Medical Center, Aurora, CO, USA; Hospital Infantil de México Federico Gómez, México City, Mexico; Committe on Travel Medicine, Pan-American Association of Infectious Diseases (API), Panama City, Panama
| | - Wilmer E Villamil-Gómez
- Committe on Travel Medicine, Pan-American Association of Infectious Diseases (API), Panama City, Panama; Committe on Tropical Medicine, Zoonoses and Travel Medicine, Colombian Association of Infectious Diseases (ACIN), Bogota, Colombia; Infectious Diseases and Infection Control Research Group, Hospital Universitario de Sincelejo, Sincelejo, Sucre, Colombia; Programa del Doctorado de Medicina Tropical, SUE Caribe, Universidad del Atlántico, Barranquilla, Colombia
| | - Jonathan Schultz
- Division of Infectious Diseases, Department of Medicine, University of Colorado Anschutz Medical Center, Aurora, CO, USA
| | - Andrés F Henao-Martínez
- Division of Infectious Diseases, Department of Medicine, University of Colorado Anschutz Medical Center, Aurora, CO, USA
| | - Gabriel Parra-Henao
- National Institute of Health, Bogota, Colombia; Centro de Investigación en Salud para el Trópico (CIST), Universidad Cooperativa de Colombia, Santa Marta, Colombia
| | - Anis Rassi
- Division of Cardiology, Anis Rassi Heart Hospital, Goiânia, GO, Brazil
| | - Alfonso J Rodríguez-Morales
- Committe on Travel Medicine, Pan-American Association of Infectious Diseases (API), Panama City, Panama; Committe on Tropical Medicine, Zoonoses and Travel Medicine, Colombian Association of Infectious Diseases (ACIN), Bogota, Colombia; Public Health and Infection Research Group, Faculty of Health Sciences, Universidad Tecnológica de Pereira, Pereira, Risaralda, Colombia; Universidad Franz Tamayo/UNIFRANZ, Cochabamba, Bolivia; Grupo de Investigación Biomedicina, Faculty of Medicine, Fundación Universitaria Autónoma de las Américas, Pereira, Risaralda, Colombia.
| | - José Antonio Suarez
- Committe on Travel Medicine, Pan-American Association of Infectious Diseases (API), Panama City, Panama; Investigador SNI Senacyt Panamá, Clinical Research Deparment, Instituto Conmemorativo Gorgas de Estudios de la Salud, Panamá City, Panama
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Parra-Henao G, Amioka E, Franco-Paredes C, Colborn KL, Henao-Martínez AF. Heart Failure Symptoms and Ecological Factors as Predictors of Chagas Disease Among Indigenous Communities in the Sierra Nevada de Santa Marta, Colombia. J Card Fail 2018; 24:864-866. [DOI: 10.1016/j.cardfail.2018.03.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/13/2018] [Accepted: 03/19/2018] [Indexed: 11/30/2022]
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18
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Mesa-Arciniegas P, Parra-Henao G, Carrión-Bonifacio Á, Casas-Cruz A, Patiño-Cuellar A, Díaz-Rodríguez K, Garzón-Jiménez S, Almansa-Manrique J, Bernal-Rosas Y, Hernández-Lamus C, Pedraza-Toscano A, Torres-García O. Trypanosoma cruzi infection in naturally infected dogs from an endemic region of Cundinamarca, Colombia. Vet Parasitol Reg Stud Reports 2018; 14:212-216. [PMID: 31014732 DOI: 10.1016/j.vprsr.2018.11.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 11/02/2018] [Accepted: 11/27/2018] [Indexed: 11/28/2022]
Abstract
The seropositivity and risk factors for Trypanosoma cruzi infection in dogs from a municipality of Cundinamarca, a central state of Colombia were studied. A total of 356 client-owned dogs from urban, peri-urban and rural areas of La Mesa municipality, (Cundinamarca, Colombia) were randomly selected. Blood samples were collected by venipuncture. Anti-T. cruzi antibodies were determined using the enzyme-linked immunosorbent assay (ELISA) method. Reactive ELISA sera were processed by indirect immunofluorescence to confirm the presence of anti-T. cruzi antibodies. Chi-square tests were conducted for statistical analysis. Serologic tests for T. cruzi infection showed a prevalence of 29.49% (105/356), the rural area show a highest T. cruzi infection pattern in comparison with the other zone locations. Two triatomine species were found through the study: Panstrongylus geniculatus (53.4%) and Rhodnius colombiensis (46.6%). The prevalence of positive vectors for parasite was of 52.1% (38/73). Additionally, a very close relation between triatomine bugs and dogs in the rural zone (1:3.1) was observed. These results are the first report of natural infection by T. cruzi in domestic dogs in La Mesa municipality. In conclusion, the presence of anti-T. cruzi antibodies in dogs in this area suggest vector transmission. There is a need for active surveillance programs throughout the La Mesa municipality and vector control strategies should also be implemented.
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Affiliation(s)
- Paola Mesa-Arciniegas
- Facultad de Ciencias de la salud Programa de Bacteriología, Universidad Colegio Mayor de Cundinamarca - UCMC, Calle 28 No. 5B-02, Bogotá D.C., Colombia
| | - Gabriel Parra-Henao
- Centro de Investigación en Salud para el Trópico, Universidad Cooperativa de Colombia, Santa Marta - UCC - Troncal del Caribe, Km 3, Santa Marta, Magdalena, Colombia; Red Chagas Colombia, Cl. 26 #51-20, Bogotá D.C., Colombia
| | - Ángela Carrión-Bonifacio
- Facultad de Ciencias de la salud Programa de Bacteriología, Universidad Colegio Mayor de Cundinamarca - UCMC, Calle 28 No. 5B-02, Bogotá D.C., Colombia
| | - Adriana Casas-Cruz
- Centro de Investigación en Salud para el Trópico, Universidad Cooperativa de Colombia, Santa Marta - UCC - Troncal del Caribe, Km 3, Santa Marta, Magdalena, Colombia
| | - Ana Patiño-Cuellar
- Facultad de Medicina Veterinaria, Universidad Antonio Nariño - UAN, Sede Circunvalar - Carrera 3 este # 47A-15, Bogotá D.C., Colombia
| | - Katherine Díaz-Rodríguez
- Facultad de Ciencias de la salud Programa de Bacteriología, Universidad Colegio Mayor de Cundinamarca - UCMC, Calle 28 No. 5B-02, Bogotá D.C., Colombia
| | - Sandra Garzón-Jiménez
- Facultad de Medicina Veterinaria, Universidad Antonio Nariño - UAN, Sede Circunvalar - Carrera 3 este # 47A-15, Bogotá D.C., Colombia
| | - Jorge Almansa-Manrique
- Facultad de Medicina Veterinaria, Universidad Antonio Nariño - UAN, Sede Circunvalar - Carrera 3 este # 47A-15, Bogotá D.C., Colombia
| | - Yuly Bernal-Rosas
- Facultad de Medicina Veterinaria, Universidad Antonio Nariño - UAN, Sede Circunvalar - Carrera 3 este # 47A-15, Bogotá D.C., Colombia
| | - Claribell Hernández-Lamus
- Facultad de Medicina Veterinaria, Universidad Antonio Nariño - UAN, Sede Circunvalar - Carrera 3 este # 47A-15, Bogotá D.C., Colombia
| | - Adriana Pedraza-Toscano
- Facultad de Medicina Veterinaria, Universidad Antonio Nariño - UAN, Sede Circunvalar - Carrera 3 este # 47A-15, Bogotá D.C., Colombia
| | - Orlando Torres-García
- Facultad de Medicina Veterinaria, Universidad Antonio Nariño - UAN, Sede Circunvalar - Carrera 3 este # 47A-15, Bogotá D.C., Colombia.
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Giraldo-Hurtado TM, Álvarez-Betancur JP, Parra-Henao G. Factores asociados a la infestación domiciliaria por Aedes aegypti en el corregimiento el Manzanillo, municipio de Itagüí (Antioquia) año 2015. Rev Fac Nac Salud Pública 2018. [DOI: 10.17533/udea.rfnsp.v36n1a05] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Badel-Mogollón J, Rodríguez-Figueroa L, Parra-Henao G. [Spatio-temporal analysis of the biophysical and ecological conditions of Triatoma dimidiata (Hemiptera: Reduviidae: Triatominae) in the northeast region of Colombia]. Biomedica 2017; 37:106-123. [PMID: 29161483 DOI: 10.7705/biomedica.v37i0.3496] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 07/16/2017] [Indexed: 06/07/2023]
Abstract
INTRODUCTION Due to the lack of information regarding biophysical and spatio-temporal conditions (hydrometheorologic and vegetal coverage density) in areas with Triatoma dimidiata in the Colombian departments of Santander and Boyacá, there is a need to elucidate the association patterns of these variables to determine the distribution and control of this species. OBJECTIVE To make a spatio-temporal analysis of biophysical variables related to the distribution of T. dimidiate observed in the northeast region of Colombia. MATERIALS AND METHODS We used the Intergovernmental Panel on Climate Change Special Report on Emissions Scenarios (IPCC SRES) data bases registering vector presence and hydrometheorologic data. We studied the variables of environmental temperature, relative humidity, rainfall and vegetal coverage density at regional and local levels, and we conducted spatial geostatistic, descriptive statistical and Fourier temporal series analyses. RESULTS Temperatures two meters above the ground and on covered surface ranged from 14,5°C to 18,8°C in the areas with the higher density of T. dimidiata. The environmental temperature fluctuated between 30 and 32°C. Vegetal coverage density and rainfall showed patterns of annual and biannual peaks. Relative humidity values fluctuated from 66,8 to 85,1%. CONCLUSIONS Surface temperature and soil coverage were the variables that better explained the life cycle of T. dimidiata in the area. High relative humidity promoted the seek of shelters and an increase of the geographic distribution in the annual and biannual peaks of regional rainfall. The ecologic and anthropic conditions suggest that T. dimidiata is a highly resilient species.
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Affiliation(s)
- Jaime Badel-Mogollón
- Red Chagas Colombia, Bogotá, D.C., Colombia Skandha EIT SAS, Medellín, Colombia.
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Hernández C, Salazar C, Brochero H, Teherán A, Buitrago LS, Vera M, Soto H, Florez-Rivadeneira Z, Ardila S, Parra-Henao G, Ramírez JD. Untangling the transmission dynamics of primary and secondary vectors of Trypanosoma cruzi in Colombia: parasite infection, feeding sources and discrete typing units. Parasit Vectors 2016; 9:620. [PMID: 27903288 PMCID: PMC5131512 DOI: 10.1186/s13071-016-1907-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 11/22/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Trypanosoma cruzi is the causative agent of Chagas disease. Due to its genetic diversity has been classified into six Discrete Typing Units (DTUs) in association with transmission cycles. In Colombia, natural T. cruzi infection has been detected in 15 triatomine species. There is scarce information regarding the infection rates, DTUs and feeding preferences of secondary vectors. Therefore, the aim of this study was to determine T. cruzi infection rates, parasite DTU, ecotopes, insect stages, geographical location and bug feeding preferences across six different triatomine species. METHODS A total of 245 insects were collected in seven departments of Colombia. We conducted molecular detection and genotyping of T. cruzi with subsequent identification of food sources. The frequency of infection, DTUs, TcI genotypes and feeding sources were plotted across the six species studied. A logistic regression model risk was estimated with insects positive for T. cruzi according to demographic and eco-epidemiological characteristics. RESULTS We collected 85 specimens of Panstrongylus geniculatus, 77 Rhodnius prolixus, 37 R. pallescens, 34 Triatoma maculata, 8 R. pictipes and 4 T. dimidiata. The overall T. cruzi infection rate was 61.2% and presented statistical associations with the departments Meta (OR: 2.65; 95% CI: 1.69-4.17) and Guajira (OR: 2.13; 95% CI: 1.16-3.94); peridomestic ecotope (OR: 2.52: 95% CI: 1.62-3.93); the vector species P. geniculatus (OR: 2.40; 95% CI: 1.51-3.82) and T. maculata (OR: 2.09; 95% CI: 1.02-4.29); females (OR: 2.05; 95% CI: 1.39-3.04) and feeding on opossum (OR: 3.15; 95% CI: 1.85-11.69) and human blood (OR: 1.55; 95% CI: 1.07-2.24). Regarding the DTUs, we observed TcI (67.3%), TcII (6.7%), TcIII (8.7%), TcIV (4.0%) and TcV (6.0%). Across the samples typed as TcI, we detected TcIDom (19%) and sylvatic TcI (75%). The frequencies of feeding sources were 59.4% (human blood); 11.2% (hen); 9.6% (bat); 5.6% (opossum); 5.1% (mouse); 4.1% (dog); 3.0% (rodent); 1.0% (armadillo); and 1.0% (cow). CONCLUSIONS New scenarios of T. cruzi transmission caused by secondary and sylvatic vectors are considered. The findings of sylvatic DTUs from bugs collected in domestic and peridomestic ecotopes confirms the emerging transmission scenarios in Colombia.
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Affiliation(s)
- Carolina Hernández
- Grupo de Investigaciones Microbiológicas-UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, 111221 Colombia
- Estudiante Doctoral, Doctorado Ciencias biomédicas y biológicas, Universidad el Rosario, Bogotá, Colombia
| | - Camilo Salazar
- Biology Program, Faculty of Natural Sciences and Mathematics, Universidad del Rosario, Carrera. 24 No. 63C-69, Bogotá, DC 111221 Colombia
| | - Helena Brochero
- Facultad de Ciencias Agrarias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Aníbal Teherán
- Grupo de Investigación COMPLEXUS, Fundación Universitaria Juan N. Corpas, Bogotá, Colombia
| | | | - Mauricio Vera
- Ministerio de Salud y protección Social, Bogotá, Colombia
| | - Hugo Soto
- Laboratorio de Salud Pública del Cesar, Valledupar, Colombia
| | | | - Sussane Ardila
- Grupo de Entomología, Instituto Nacional de Salud, Bogotá, Colombia
| | - Gabriel Parra-Henao
- Centro de Investigación en Salud para el Trópico, Universidad Cooperativa de Colombia, Santa Marta, Colombia
| | - Juan David Ramírez
- Grupo de Investigaciones Microbiológicas-UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, 111221 Colombia
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Henao-Martínez AF, Colborn K, Parra-Henao G. Overcoming research barriers in Chagas disease-designing effective implementation science. Parasitol Res 2016; 116:35-44. [PMID: 27771804 DOI: 10.1007/s00436-016-5291-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 10/07/2016] [Indexed: 12/20/2022]
Abstract
Chagas disease is a complex tropical parasitic infection. It affects a significant portion of the population in Latin America, especially in areas of poverty and poor access to health care. It also affects immigrants in high-income countries who lack access to health care due to their legal status. Millions of people are at risk of contracting the disease, and approximately 30 % of chronically infected patients will develop cardiomyopathy. The cost of caring for patients that have been infected is substantial. Basic science research has introduced new concepts and knowledge for the parasite and vector biology as well as better understanding of the pathophysiology of the disease. These research findings nevertheless require effective and timely translation into clinical practice. Likewise, the design of new research projects should account for the multiple system-based barriers. Implementation science facilitates the applicability of research findings and identifies barriers to its execution. Creation of implementation science measures to reach and sustain research programs with greater potential to impact Chagas disease are lacking. This point of view proposes opportunities for implementation science in Chagas disease and strategies for researching effective interventions for preventing and treating the disease.
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Affiliation(s)
- Andrés F Henao-Martínez
- Division of Infectious Diseases, Department of Medicine, University of Colorado Denver, 12700 E. 19th Avenue, Mail Stop B168, Aurora, CO, 80045, USA.
| | - Kathryn Colborn
- Division of Health Care Policy and Research, Adult and Child Consortium for Health Outcomes Research and Delivery Science, School of Medicine, University of Colorado Denver, Aurora, CO, USA
| | - Gabriel Parra-Henao
- Red Chagas Colombia, Centro de Investigación en Salud para el Trópico (CIST), UCC, Santa Marta, Colombia
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Restrepo B, Rodas JD, Montoya-Ruiz C, Zuluaga AM, Parra-Henao G, Agudelo-Flórez P. Evidencia serológica retrospectiva de infecciones por Leptospira spp., dengue, hantavirus y arenavirus en indígenas Emberá-Katío, Colombia. Rev Chilena Infectol 2016; 33:472-473. [DOI: 10.4067/s0716-10182016000400015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 07/04/2016] [Indexed: 11/17/2022] Open
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Affiliation(s)
| | | | | | | | | | | | | | - Rubens Nodari
- Federal University of Santa Catarina, Santa Catarina, Brazil
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Parra-Henao G, Quirós-Gómez O, Jaramillo-O N, Cardona ÁS. Environmental Determinants of the Distribution of Chagas Disease Vector Triatoma dimidiata in Colombia. Am J Trop Med Hyg 2016; 94:767-74. [PMID: 26856910 DOI: 10.4269/ajtmh.15-0197] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 12/24/2015] [Indexed: 11/07/2022] Open
Abstract
Triatoma dimidiata (Hemiptera: Reduviidae) is a secondary vector of Trypanosoma cruzi in Colombia and represents an important epidemiological risk mainly in the central and oriental regions of the country where it occupies sylvatic, peridomestic, and intradomestic ecotopes, and because of this complex distribution, its distribution and abundance could be conditioned by environmental factors. In this work, we explored the relationship between T. dimidiata distribution and environmental factors in the northwest, northeast, and central zones of Colombia and developed predictive models of infestation in the country. The associations between the presence ofT. dimidiata and environmental variables were studied using logistic regression models and ecological niche modeling for a sample of villages in Colombia. The analysis was based on the information collected in field about the presence ofT. dimidiata and the environmental data for each village extracted from remote sensing images. The presence of Triatoma dimidiata(Latreille, 1811) was found to be significantly associated with the maximum vegetation index, minimum land surface temperature (LST), and the digital elevation for the statistical model. Temperature seasonality, annual precipitation, and vegetation index were the variables that most influenced the ecological niche model ofT. dimidiata distribution. The logistic regression model showed a good fit and predicted suitable habitats in the Andean and Caribbean regions, which agrees with the known distribution of the species, but predicted suitable habitats in the Pacific and Orinoco regions proposing new areas of research. Improved models to predict suitable habitats forT. dimidiata hold promise for spatial targeting of integrated vector management.
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Affiliation(s)
- Gabriel Parra-Henao
- Red Chagas Colombia, Bogotá, Colombia; Grupo de Epidemiología y Bioestadística, Universidad CES, Medellín, Colombia; Instituto de Biología, Universidad de Antioquia, Medellín, Colombia
| | - Oscar Quirós-Gómez
- Red Chagas Colombia, Bogotá, Colombia; Grupo de Epidemiología y Bioestadística, Universidad CES, Medellín, Colombia; Instituto de Biología, Universidad de Antioquia, Medellín, Colombia
| | - Nicolas Jaramillo-O
- Red Chagas Colombia, Bogotá, Colombia; Grupo de Epidemiología y Bioestadística, Universidad CES, Medellín, Colombia; Instituto de Biología, Universidad de Antioquia, Medellín, Colombia
| | - Ángela Segura Cardona
- Red Chagas Colombia, Bogotá, Colombia; Grupo de Epidemiología y Bioestadística, Universidad CES, Medellín, Colombia; Instituto de Biología, Universidad de Antioquia, Medellín, Colombia
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Parra-Henao G, Angulo VM, Osorio L, Jaramillo-O N. Geographic Distribution and Ecology of Triatoma dimidiata (Hemiptera: Reduviidae) in Colombia. J Med Entomol 2016; 53:122-129. [PMID: 26487247 DOI: 10.1093/jme/tjv163] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 09/25/2015] [Indexed: 06/05/2023]
Abstract
Triatoma dimidiata Latreille is the second most important vector of Chagas' disease in Colombia and is found in urban and periurban areas. From January 2007 to June 2008, we performed field work in 8 departments, 18 municipalities, and 44 rural villages, covering most of its known distribution and all of its ecological zones in the country. The goal was to determine the geographical distribution, the ecology, and house infestation indices of T. dimidiata over its range and hence the Chagas' disease transmission risk. In Colombia, T. dimidiata occupies a wide variety of ecosystems, from transformed ecosystems in the Andean biome with shrub and xerofitic vegetation to very dense forests in the humid tropical forests in the Sierra Nevada of Santa Marta. According to genetic and ecological criteria, at least two T. dimidiata forms of this species are present: populations from the northwest of the country (Caribbean plains) are restricted to palm tree habitats, and domestic involvement is limited to sporadic visits because of attraction by light; and populations of the east region (Andean mountains) presenting a complex distributional pattern including sylvatic, peridomestic, and domiciliated ecotopes, and occupying a great variety of life zones. The latter population is of epidemiological importance due to the demonstrated migration and genetical flow of individuals among the different habitats. Control, therefore, must take into account its diversity of habitats.
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Affiliation(s)
- Gabriel Parra-Henao
- Red Chagas Colombia, calle 26 No 51-20 zona 6 CAN, Bogotá D.C., Colombia (; ), Instituto Colombiano de Medicina Tropical-Universidad CES, Kra 43 A N° 52 S 99, Sabaneta, Antioquia, Colombia, Grupo de Epidemiología y Bioestadística, Universidad CES, Medellín, Colombia,
| | - Víctor Manuel Angulo
- Red Chagas Colombia, calle 26 No 51-20 zona 6 CAN, Bogotá D.C., Colombia (; ), CINTROP, Universidad Industrial de Santander, Kra 27 calle 9, Bucaramanga, Santander, Colombia
| | - Lisardo Osorio
- Facultad Nacional de Salud Pública, Universidad de Antioquia, calle 67 No. 53 - 108, Medellín, Antioquia, Colombia , and
| | - Nicolás Jaramillo-O
- Instituto de Biología, Universidad de Antioquia, calle 67 No. 53 - 108, Medellín, Antioquia, Colombia
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Henao-Martínez AF, Parra-Henao G. Murine heart gene expression during acute Chagasic myocarditis. Genom Data 2015; 4:76-7. [PMID: 26484182 PMCID: PMC4535623 DOI: 10.1016/j.gdata.2015.03.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 03/24/2015] [Accepted: 03/24/2015] [Indexed: 11/04/2022]
Abstract
Chagas disease is transmitted by the parasite, Trypanosoma cruzi. Acute infection is characterized by acute myocarditis, although it is largely asymptomatic. Initial cardiac insult could be a determinant to the posterior development of chronic Chagasic cardiomyopathy, usually after 10 years in only approximately 30% of chronically infected patients. Herein, we characterized the acute gene expression profiling in heart tissue of two strains of mice infected with T. cruzi (tulahuen strain) at 4 weeks and their respective controls. Gene sequence data are available at NCBI under GEO accession number: GSE63847. The output of the genes expression suggests differences in involvement of protein kinase B (AKT), NCAM1, HLA-DRA, and ubiquitin C genes networks. These gene activation differences may correlate with myocardial contractility during the acute infection.
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Affiliation(s)
- Andrés F Henao-Martínez
- Division of Infectious Diseases, Department of Medicine, University of Colorado Denver, United States
| | - Gabriel Parra-Henao
- Red Chagas Colombia, Instituto Nacional de Salud, Bogotá, Colombia and Grupo de Epidemiología y Bioestadística, Universidad CES, Colombia
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Alarcón ÉP, Segura ÁM, Rúa-Uribe G, Parra-Henao G. [Ovitraps evaluation for surveillance and control of Aedes aegypti in two urban settlements of Urabá, Antioquia]. Biomedica 2014; 34:409-24. [PMID: 25504128 DOI: 10.1590/s0120-41572014000300011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 05/05/2014] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Aedes (Stegomyia) aegypti is the main vector of dengue. Chemical insecticides have been used to control the mosquito and it has developed resistance. It is necessary to evaluate alternative strategies that are efficient, economical and easy to apply, such as ovitraps with Bacillus thuringiesis israeliensis . OBJECTIVE To evaluate the impact of ovitraps loaded with B. t. israeliensis on traditional indexes, as strategies for surveillance and control of A. aegypti . MATERIALS AND METHODS We selected eight neighborhoods from the municipalities of Apartadó and Carepa. Two neighborhoods in each municipality were chosen for intervention and two for control. The intervention consisted in the installation of ovitraps with B. t. israeliensis in every house. The traps were visited each month between September, 2009, and March, 2010. Traditional indexes were obtained and compared among the neighborhoods. Ovitrap positivity index and egg density index were calculated and we generated density maps. RESULTS Five hundred and nineteen ovitraps were placed monthly; 3,114 samples were obtained, from which 76.4% were positive. We collected 501,425 eggs. In Apartadó, statistically significant differences were observed in the house, container and Breteau indexes. The ovitrap positivity index showed high risk of A. aegypti infestation and traditional indexes showed medium and low risk levels. CONCLUSIONS Ovitraps had an impact on traditional indexes and proved to be useful strategies for surveillance and control of A. aegypti in Urabá, Antioquia.
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Affiliation(s)
| | - Ángela María Segura
- Grupo de Epidemiología y Bioestadística, Universidad CES, Sabaneta, Colombia
| | | | - Gabriel Parra-Henao
- Instituto Colombiano de Medicina Tropical, Universidad CES, Sabaneta, Colombia
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Quimbayo M, Rúa-Uribe G, Parra-Henao G, Torres C. [Evaluation of lethal ovitraps as a strategy for Aedes aegypti control]. Biomedica 2014; 34:473-82. [PMID: 25504133 DOI: 10.1590/s0120-41572014000300016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Accepted: 05/20/2014] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Dengue fever is a vector-borne viral disease of major public health importance. In the absence of a vaccine, control measures are primarily focused on reducing the mosquito vector. However, these strategies are very expensive, and the use of lethal ovitraps could contribute, in a practical manner, to the design of cost-effective strategies for vector control. OBJECTIVE To determine the most efficient type of lethal ovitrap for Ae. aegypti vector control by combining different types of insecticides, oviposition substrates and attractant infusions. MATERIALS AND METHODS The study was conducted in two stages. In the first, 18 different ovitraps resulting from the combination of insecticides (deltamethrin and permethrin), oviposition substrates (towel, dacron and flannel), and attractant infusion (10 and 20% hay infusion, and dechlorinated water) were evaluated in the laboratory. For this evaluation, ovitraps were placed into a mosquito holding cage, and 100 gravid Ae. aegypti females were released. The top six ovitraps were selected based on the higher number of registered eggs, and the lower hatched eggs percentage. In the second, the top six ovitraps were evaluated in field conditions. RESULTS In laboratory conditions, statistical differences were observed between the 18 ovitraps. The ovitraps with deltamethrin were the most efficient showing the best results. In field conditions, the ovitraps with the highest vector reduction were those combining deltamethrin/towel/10% hay infusion. CONCLUSIONS The ovitrap combining deltamethrin, towel as oviposition substrate, and 10% hay infusion as attractant was the most efficient Ae. aegypti vector control.
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Affiliation(s)
- Marcela Quimbayo
- Grupo de Entomología Médica, Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia
| | - Guillermo Rúa-Uribe
- Grupo de Entomología Médica, Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia
| | | | - Carolina Torres
- Programa de Estudio y Control de Enfermedades Tropicales, Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia
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Santos SLD, Parra-Henao G, Silva MBCE, Augusto LGDS. Dengue in Brazil and Colombia: a study of knowledge, attitudes, and practices. Rev Soc Bras Med Trop 2014; 47:783-7. [DOI: 10.1590/0037-8682-0048-2014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Accepted: 08/21/2014] [Indexed: 05/28/2023] Open
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Parra-Henao G, Cardona ÁS, Quirós-Gómez O, Angulo V, Alexander N. House-level risk factors for Triatoma dimidiata infestation in Colombia. Am J Trop Med Hyg 2014; 92:193-200. [PMID: 25349372 DOI: 10.4269/ajtmh.14-0273] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
In Colombia, the main vectors of Trypanosoma cruzi, the causative agent of Chagas disease, are Rhodnius prolixus and Triatoma dimidiata. T. dimidiata is present in the east region of Colombia as domestic, peridomestic, and sylvatic populations, resulting in difficulties for its control. A cost-effective way to prioritize houses for treatment is to stratify houses based on risk factors. In this study, risk factors were evaluated for potential associations with domicile infestation of T. dimidiata. There was an increased likelihood of domestic infestation associated with the presence of mixed roofs (odds ratio [OR] = 36.14, 95% confidence interval [95% CI] = 12.21-106.97), cats (OR = 3.94, 95% CI = 1.36-11.38), rock piles (OR = 5.28, 95% CI = 1.64-16.98), and bushes with height above 10 m (OR = 11.21, 95% CI = 2.08-60.45). These factors could be used to target surveillance and control of T. dimidiata to houses with an increased risk of being infested.
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Affiliation(s)
- Gabriel Parra-Henao
- Red Chagas, Bogotá, Colombia; Instituto Colombiano de Medicina Tropical, Medellín, Colombia; Grupo de Epidemiología y Bioestadística, Universidad CES, Medellín, Colombia; Centro de Investigación en Enfermedades Tropicales, Universidad Industrial de Santander, Bucaramanga, Colombia; London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Ángela Segura Cardona
- Red Chagas, Bogotá, Colombia; Instituto Colombiano de Medicina Tropical, Medellín, Colombia; Grupo de Epidemiología y Bioestadística, Universidad CES, Medellín, Colombia; Centro de Investigación en Enfermedades Tropicales, Universidad Industrial de Santander, Bucaramanga, Colombia; London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Oscar Quirós-Gómez
- Red Chagas, Bogotá, Colombia; Instituto Colombiano de Medicina Tropical, Medellín, Colombia; Grupo de Epidemiología y Bioestadística, Universidad CES, Medellín, Colombia; Centro de Investigación en Enfermedades Tropicales, Universidad Industrial de Santander, Bucaramanga, Colombia; London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Víctor Angulo
- Red Chagas, Bogotá, Colombia; Instituto Colombiano de Medicina Tropical, Medellín, Colombia; Grupo de Epidemiología y Bioestadística, Universidad CES, Medellín, Colombia; Centro de Investigación en Enfermedades Tropicales, Universidad Industrial de Santander, Bucaramanga, Colombia; London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Neal Alexander
- Red Chagas, Bogotá, Colombia; Instituto Colombiano de Medicina Tropical, Medellín, Colombia; Grupo de Epidemiología y Bioestadística, Universidad CES, Medellín, Colombia; Centro de Investigación en Enfermedades Tropicales, Universidad Industrial de Santander, Bucaramanga, Colombia; London School of Hygiene and Tropical Medicine, London, United Kingdom
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Weeks ENI, Davies C, Rosales CC, Yeo M, Gezan SA, Parra-Henao G, Cameron MM. Community-based sampling methods for surveillance of the Chagas disease vector, Triatoma dimidiata (Hemiptera: Reduviidae: Triatominae). J Med Entomol 2014; 51:1035-1042. [PMID: 25276934 DOI: 10.1603/me14033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In Guatemala, the most widespread vector of Trypanosoma cruzi (Kinetoplastida: Trypanosomatidae), the causative agent of Chagas disease, is Triatoma dimidiata (Latreille) (Hemiptera: Reduviidae: Triatominae). T. dimidiata is native to Guatemala and is present in both domestic and sylvatic habitats. Consequently, control of T. dimidiata is difficult because after successful elimination from homes, individual insects can recolonize homes from the surrounding environment. Therefore, intensive long-term surveillance of this species is essential to ensure adequate control is achieved. Manual inspection for signs of infestation, the current method used to monitor Triatominae throughout Central and South America, is labor and time-consuming, so cost-effective alternatives are needed. The current study compared the effectiveness of the current method of surveillance of T. dimidiata with community-based techniques of G6mez-Nuñez sensor boxes, collection and observation of bugs by householders, and presence of triatomine-like feces on walls. Although manual inspection was the most sensitive method when used alone, collection by householders also was sensitive and specific and involved less effort. Sensor boxes were not sensitive indicators of T. dimidiata infestation when used alone. Two recorded variables, visual inspection for feces and the sighting of bugs by householders, were sensitive and specific indicators of infestation, and in combination with collection by householders and sensor boxes these methods were significantly more likely to detect infestations than manual inspection alone. A surveillance program that combines multiple community-based techniques should have low cost and involve minimal effort from the government and at the same time promote sustainable community involvement in disease prevention.
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Parra-Henao G, Suárez L. [Mosquitoes (Diptera: Culiciadae) as potential vectors of arboviruses in the Urabá region, Northwest of Colombia]. Biomedica 2013; 32:430-6. [PMID: 23242299 DOI: 10.1590/s0120-41572012000300013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Accepted: 04/27/2012] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Studies directed to investigate ecological parameters of sylvatic mosquitoes populations permit the establishment of risk levels in the transmission of arboviruses and provide the basis for recommendations to health authorities about prevention, surveillance and control. OBJECTIVE To establish the diversity and abundance of mosquitoes vectors of arbovirus in rural areas of Apartadó and Turbo, Antioquia. MATERIALS AND METHODS Quarterly sampling was done. For mosquito collections in forest fragments, CDC traps, Shannon traps and human landing methods were used. Diversity and abundance indices were calculated. RESULTS Five hundred eighty-three mosquitoes were collected and identified in 10 genera and 27 species. The most abundant species were as follows: Coquilletidia venezuelensis (14.6%), Aedes scapularis (14.1%), Psorophora ferox (10.8%) and Culex quinquefasciatus (10.3%). Species richness and ecological indexes were highest in Turbo municipality; where the forest fragment was considered highest in species richness and uniformity. The identification in the samples of Culex pedroi,Ae. scapularis, Aedes angustivittatus, Cq. venezuelensis, Culex nigripalpus, Cx. quinquefasciatus, Culex declarator, Mansonia titillans, Mansonia pseudotitillans, Ps. ferox and Trichoprosopon. Digitatum--all previously reported as arbovirus vectors--warns about the possibility of arbovirus transmission in the zone. CONCLUSIONS Mosquito diversity and abundance in the study area was very high. The ecological analysis, plus previous reports about vector competence of several of the recorded species, permits the conclusion that arbovirus outbreaks can occur in the Urabá region.
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Affiliation(s)
- Gabriel Parra-Henao
- Laboratorio de Entomología, Instituto Colombiano de Medicina Tropical, Medellín, Colombia.
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Sanchez-Ribas J, Parra-Henao G, Guimarães AÉ. Impact of dams and irrigation schemes in Anopheline (Diptera: Culicidae) bionomics and malaria epidemiology. Rev Inst Med Trop Sao Paulo 2012; 54:179-91. [DOI: 10.1590/s0036-46652012000400001] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Accepted: 04/13/2012] [Indexed: 11/21/2022] Open
Abstract
Irrigation schemes and dams have posed a great concern on public health systems of several countries, mainly in the tropics. The focus of the present review is to elucidate the different ways how these human interventions may have an effect on population dynamics of anopheline mosquitoes and hence, how local malaria transmission patterns may be changed. We discuss different studies within the three main tropical and sub-tropical regions (namely Africa, Asia and the Pacific and the Americas). Factors such as pre-human impact malaria epidemiological patterns, control measures, demographic movements, human behaviour and local Anopheles bionomics would determine if the implementation of an irrigation scheme or a dam will have negative effects on human health. Some examples of successful implementation of control measures in such settings are presented. The use of Geographic Information System as a powerful tool to assist on the study and control of malaria in these scenarios is also highlighted.
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Grisales N, Triana O, Angulo V, Jaramillo N, Parra-Henao G, Panzera F, Gómez-Palacio A. [Genetic differentiation of three Colombian populations of Triatoma dimidiata (Heteroptera: Reduviidae) by ND4 mitochondrial gene molecular analysis]. Biomedica 2010; 30:207-214. [PMID: 20890568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/15/2009] [Accepted: 12/06/2009] [Indexed: 05/29/2023]
Abstract
INTRODUCTION Triatoma dimidiata is the second most important vector of Chagas disease in Colombia after Rhodnius prolixus. Population genetic studies are essential for the adequate design and implementation of vector control and surveillance strategies. OBJECTIVE The level of genetic variability and population differentiation was surveyed among three Colombian populations of T. dimidiata from different geographic locations and ecotopes, using ND4 mitochondrial gene. MATERIALS AND METHODS Genetic comparison was made between two wild populations from La Guajira (n=10) and Santander (n=10) provinces, and one intra (n=15) and one peridomiciliary (n=5) population from the Cesar province. The polymorphism frequencies of the ND4 mitochondrial gene sequence were analyzed to deduce population structure based on the 40 samples. RESULTS Colombian T. dimidiata showed a high nucleotide (π: 0.034) and haplotype diversity (Hd: 0.863), as well as significant population subdivision (fST: 0.761) and a low migration rate (Nm: 0.157). Genetic distances and variability differences among populations indicate distinct population subdivision amongst the three provinces. CONCLUSION ND4 proved useful in elucidating the significant genetic differentiation that has occurred among T. dimidiata populations from La Guajira, Cesar and Santander. The analysis suggested a relationship between population subdivision and some eco-epidemiological attributes of this vector from the central eastern and northwestern regions of Colombia.
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Affiliation(s)
- Nelson Grisales
- Grupo de Biología y Control de Enfermedades Infecciosas, Sede de Investigación Universitaria, Instituto de Biología, Universidad de Antioquia, Medellín, Colombia
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