DSpace Collection:http://sgc.anlis.gob.ar/handle/123456789/152024-03-23T15:46:12Z2024-03-23T15:46:12ZPeridomestic natural breeding sites of Nyssomyia whitmani (Antunes and Coutinho) in an endemic area of tegumentary leishmaniasis in northeastern ArgentinaManteca Acosta, MarianaCavia, ReginoUtgés, Maria EugeniaSalomón, Oscar DanielSantini, María Soledadhttp://sgc.anlis.gob.ar/handle/123456789/23872021-11-03T22:55:49Z2021-08-01T00:00:00ZTitle: Peridomestic natural breeding sites of Nyssomyia whitmani (Antunes and Coutinho) in an endemic area of tegumentary leishmaniasis in northeastern Argentina
Authors: Manteca Acosta, Mariana; Cavia, Regino; Utgés, Maria Eugenia; Salomón, Oscar Daniel; Santini, María Soledad
Abstract: The scarce information about breeding sites of phlebotomines limits our understanding of the epidemiology of tegumentary leishmaniasis. Identifying the breeding sites and seasons of immature stages of these vectors is essential to propose prevention and control strategies different from those targeting the adult stage. Here we identified the rural breeding environments of immature stages of Ny. whitmani, vector species of Leishmania braziliensis in the north of Misiones province, Argentina; then we determined and compared the environmental and structural characteristics of those sites. We also identified the season of greatest emergence and its relationship with adult abundance. During a first collection period, between 28 and 48 emergence traps were set continuously for 16 months in six environments of the farm peridomicile and domicile: below house, chicken shed, experimental chicken shed, forest edge, pigsty and under fruit tree. Traps were checked and rotated every 40 nights. A total of 146 newly emerged individuals were collected (93.8% of them were Ny. whitmani), totaling an effort of 23,040 emergence trap-nights. The most productive environments were chicken shed and below house, and the greatest emergence was recorded in spring and summer. During a second collection period, emergence traps and light traps for adult capture were placed in the chicken shed and below house environments of eight farms. Emergence traps were active continuously during spring, summer, and early autumn. Environmental and structural characteristics of each environment were recorded. A total of 84 newly emerged phlebotomines (92.9% Ny. whitmani; 72,144 emergence trap-nights) and 13,993 adult phlebotomines (147 light trap-nights) were recorded in the chicken shed and below house environments. A positive correlation was also observed between trap success of newly emerged phlebotomines and of adults after 120 days. A high spatial variability was observed in the emergence of Ny. whitmani, with the number of newly emerged individuals being highest in soils of chicken sheds with the highest number of chickens and closest to forest edge. Moreover, below house was found to be as important as chicken sheds as breeding sites of Ny. whitmani. Management of the number of chickens in sheds, soil moisture and pH, and the decision of where to localize the chicken sheds in relation to the houses and the forest edge, might contribute to reduce the risk of human vector exposure and transmission of Leishmania.
Description: Fil. Manteca-Acosta, Mariana. ANLIS Dr.C.G.Malbrán. Centro Nacional de Diagnóstico e Investigación en Endemo-Epidemias; Argentina.
Comité Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.; Fil. Cavia, Regino. Comité Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires e Instituto de Ecología, Genética y Evolución, Buenos Aires, Argentina.; Fil. Utgés, María Eugenia. ANLIS Dr.C.G.Malbrán. Centro Nacional de Diagnóstico e Investigación en Endemo-Epidemias; Argentina.; Fil. Salomón, Oscar Daniel. Comité Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
ANLIS Dr.C.G.Malbrán. Instituto Nacional de Medicina Tropical; Argentina.; Fil. Santini, María Soledad. ANLIS Dr.C.G.Malbrán. Centro Nacional de Diagnóstico e Investigación en Endemo-Epidemias; Argentina.
Comité Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.2021-08-01T00:00:00ZCourse of serological tests in treated subjects with chronic Trypanosoma cruzi infection: A systematic review and meta-analysis of individual participant dataSguassero, YaninaRoberts, Karen NHarvey, Guillermina BComandé, DanielCiapponi, AgustinCuesta, Cristina BAguiar, CamilaCastro, Ana M deDanesi, Emmariade Andrade, Ana Lde Lana, MartaEscribà, Josep MFabbro, Diana LFernandes, Cloé DFlores-Chávez, María DelmansHasslocher-Moreno, Alejandro MJackson, YvesLacunza, Carlos DMachado-de-Assis, Girley FMaldonado, MariselMeira, Wendell S FMolina, IsraelMonje-Rumi, María MMuñoz-San Martín, CatalinaMurcia, LauraNery de Castro, CleudsonSánchez Negrette, OlgaSegovia, ManuelSilveira, Celeste A NSolari, AldoSteindel, MárioStreiger, Mirtha LVera de Bilbao, NinfaZulantay, InésSosa-Estani, Sergiohttp://sgc.anlis.gob.ar/handle/123456789/23502021-06-24T03:32:42Z2018-08-01T00:00:00ZTitle: Course of serological tests in treated subjects with chronic Trypanosoma cruzi infection: A systematic review and meta-analysis of individual participant data
Authors: Sguassero, Yanina; Roberts, Karen N; Harvey, Guillermina B; Comandé, Daniel; Ciapponi, Agustin; Cuesta, Cristina B; Aguiar, Camila; Castro, Ana M de; Danesi, Emmaria; de Andrade, Ana L; de Lana, Marta; Escribà, Josep M; Fabbro, Diana L; Fernandes, Cloé D; Flores-Chávez, María Delmans; Hasslocher-Moreno, Alejandro M; Jackson, Yves; Lacunza, Carlos D; Machado-de-Assis, Girley F; Maldonado, Marisel; Meira, Wendell S F; Molina, Israel; Monje-Rumi, María M; Muñoz-San Martín, Catalina; Murcia, Laura; Nery de Castro, Cleudson; Sánchez Negrette, Olga; Segovia, Manuel; Silveira, Celeste A N; Solari, Aldo; Steindel, Mário; Streiger, Mirtha L; Vera de Bilbao, Ninfa; Zulantay, Inés; Sosa-Estani, Sergio
Abstract: To determine the course of serological tests in subjects with chronic Trypanosoma cruzi infection treated with anti-trypanosomal drugs.2018-08-01T00:00:00Z[Congenital transmission of Trypanosoma cruzi. Argentina 2002-2014]Danesi, EmmariaCodebó, Maria OlenkaSosa-Estani, Sergiohttp://sgc.anlis.gob.ar/handle/123456789/23492021-06-24T03:20:39Z2019-01-01T00:00:00ZTitle: [Congenital transmission of Trypanosoma cruzi. Argentina 2002-2014]
Authors: Danesi, Emmaria; Codebó, Maria Olenka; Sosa-Estani, Sergio
Abstract: In Argentina, around 1500 children are born each year with Trypanosoma cruzi infection. Mother-to-child transmission is the main source of new cases of Chagas disease and of its occurrence in non-endemic areas. Our objective was to survey the information available on congenital T. cruzi infection, to analyze its evolution and its relation with the index of maternal infection and the risk for vector-borne infection by province of Argentina. Data concerning the public health sector for the period 1997-2014 were retrieved from national and local records. An increase in the number and proportion of pregnant women examined for Chagas was observed, reaching 60.3% coverage in 2014. The prevalence of maternal infection dropped from 9.0% to 2.6%. The control of newborns from infected women was highly variable (23.3%-93.6%), and data quality was deficient, varying amply by province and year. The rate of congenital infection had an irregular evolution and its national average fluctuated between 1.9 and 8.2%. An association was observed between the risk for vector-borne infection and the prevalence of maternal infection by province (Wilcoxon test p = 0.017). The rate of congenital transmission by province was neither associated with the rate of maternal infection (linear regression p = 0.686) nor with the risk for vectorial infection (Kruskal-Wallis test p = 0.3154). The available data show insufficient control of children born from infected mothers, as well as deficient recording of these procedures. Both aspects must be improved to achieve better epidemiological information and to enable timely access of infected children to treatment.2019-01-01T00:00:00ZHigher congenital transmission rate of Trypanosoma cruzi associated with family history of congenital transmissionDanesi, EmmariaFabbro, Diana LucreciaSegura, Elsa L.Sosa-Estani, Sergiohttp://sgc.anlis.gob.ar/handle/123456789/23482021-06-24T03:13:40Z2020-01-01T00:00:00ZTitle: Higher congenital transmission rate of Trypanosoma cruzi associated with family history of congenital transmission
Authors: Danesi, Emmaria; Fabbro, Diana Lucrecia; Segura, Elsa L.; Sosa-Estani, Sergio
Abstract: Congenital transmission (CT) of Trypanosoma cruzi has led to globalization of Chagas disease and its growing relevance as a public health problem. Although the occurrence of CT has been associated with several factors, its mechanisms are still unknown. This study aimed to analyze the geographical and familiar variables of mothers and their association with CT of Chagas disease in a population living in non-endemic areas of Argentina for the last decades.2020-01-01T00:00:00Z