A5021518953- Trypanosoma species research and implications
- Research on Leishmaniasis Studies
- Helminth infection and control
- SARS-CoV-2 and COVID-19 Research
- Insect symbiosis and bacterial influences
- Insect Pest Control Strategies
- COVID-19 Clinical Research Studies
- Mosquito-borne diseases and control
- SARS-CoV-2 detection and testing
- Platelet Disorders and Treatments
- COVID-19 epidemiological studies
- Public Health and Social Inequalities
- Data-Driven Disease Surveillance
- Bacterial Infections and Vaccines
- Nematode management and characterization studies
- Cleft Lip and Palate Research
- Cardiomyopathy and Myosin Studies
- Autoimmune Bullous Skin Diseases
- Animal Disease Management and Epidemiology
- Cardiac electrophysiology and arrhythmias
- Antiplatelet Therapy and Cardiovascular Diseases
- Long-Term Effects of COVID-19
- Heparin-Induced Thrombocytopenia and Thrombosis
- Viral Infections and Vectors
- Coenzyme Q10 studies and effects
Academia Nacional de Medicina
2000-2024
Consejo Nacional de Investigaciones Científicas y Técnicas
2023
National University of Misiones
2023
National Academy of Sciences
2021
Faculdades Guarulhos
2011
Universidad Nacional de Córdoba
2010
University of Buenos Aires
1997-2005
Research Centre in Biological Chemistry of Córdoba
2001
Ministerio de Salud
1989-2000
National Food Safety and Quality Service
1994
We designed a set of procedures for first-line local health services to detect and treat the congenital transmission Trypanosoma cruzi at province-wide scale, field-tested programme in province Tucumán, northwestern Argentina, from 1992 1994. The consists routine screening pregnant women seroreactivity T. cruzi, serological parasitological follow-up newborn least twice during first year age, treatment infected infants, evaluation outcome. 927 (5.5%) 16 842 were seroreactive by indirect...
Following increasing reinfestation with Triatoma infestans after insecticide spraying, the household incidence of infection Trypanosoma cruzi in children was positively related to domestic abundance infected T. and presence or proportion dogs cats Amamá, a rural village northwestern Argentina. Seven (12.1%) seronegative for antibodies at baseline, no history travel blood transfusion, seroconverted three years. Six incident cases lived houses heavily infested infestans, high proportions bugs...
The purpose of this study was to identify the origin Triatoma infestans reinfestation and its dynamics following spraying with deltamethrin inside around 94 houses in three rural communities northwestern Argentina. effectiveness evaluated immediately after were sprayed two months later. In addition, five residual peridomiciliary foci found sprayed, as well preexisting ones that had not been sprayed. To monitor reinfestation, biosensors placed each family also asked capture triatomines keep...
The probability that an uninfected Triatoma infestans would become infected with Trypanosoma cruzi after a single feed on people or dogs seropositive for T. was estimated in Amama, rural village northwest Argentina where transmission had resurged four years earlier. prevalence of seropositivity 34.2% among 225 tested, and 65.1% 83 tested. Parasitemia detected by xenodiagnosis 29.3% 41 persons 85.3% 34 dogs. decreased age more sharply than Seropositive humans 2.6% (95% confidence interval =...
In three rural villages of northwest Argentina, the overall proportion domiciliary Triatoma infestans infected with Trypanosoma cruzi was 49% among 1,316 bugs individually examined for infection in March and October 1992). Most variation individual households triatomines explained by variations houses that fed on dogs or cats, prevalence humans, according to a logistic multiple regression analysis. The effects human rates bug were not statistically significant. After adjusting other...
1. Data from a 4-year study on the blood meal sources of 1964 specimens Triatoma infestans collected human sleeping places in three rural villages north-west Argentina were analysed using individual houses as basic sampling unit. Logistic multiple regression analysis was used to test whether proportion domiciliary T. that fed humans, dogs, chickens or cats related number these hosts house and vector density. 2. On average, dogs 2.6 2.3 times more likely be selected than relative...
Dogs, the main domestic reservoirs of Trypanosoma cruzi in Argentine chaco, may be useful as sentinels vector-mediated transmission control programmes if canine infections acquired by all other routes could excluded. In present study, province Santiago del Estero, Argentina, dog populations neighbouring villages Amamá, Trinidad, Mercedes, Villa Matilde and Pampa Pozo were studied immediately before spraying residual insecticides (in 1992 Trinidad Mercedes 1993–1994 villages) twice during a...
Environmental, demographic, and entomologic variables were analyzed by logistic multiple regression analysis for their association with the likelihood of being seropositive Trypanosoma cruzi in three highly infested rural villages northwest Argentina. The prevalence seropositivity T. cruzi, as determined composite results serologic tests, was 34% among 338 persons 1992. strongest positive predictors adjusted odds infected household number dogs, density cruzi-infected Triatoma infestans...
The risk of domestic reinfestation by Triatoma infestans after a single community-wide application delta-methrin (2.5% suspension concentrate at 25 mg active ingredient/m2) was studied in Amamá, north-west Argentina, where no insecticide spraying had been done official control services. percentage infested houses fell from 88% before 1985 to nil during the 6 months spraying, and thereafter increased 5% 1986 96% second treatment 1992, fitting closely logistic model (r2 = 0.997). Significant...
Summary The Reduviid bugs Triatoma garciabesi Carcavallo et al . (Hemiptera: Reduviidae: Triatominae), previously known as T. sordida Ståhl in the semi‐arid chaco region, and guasayana Wygodzinsky & Abalos, vectors of Trypanosoma cruzi Chagas (Kinetoplastida: Trypanosomatidae), were found to occupy wide but different ranges ecotopes peridomestic environment. At Amamá nearby rural villages north‐western Argentina, a combined total 1233 specimens collected from 325/2314 (14%) sites...
The prevalence of Trypanosoma cruzi infection in Triatoma infestans, guasayana, and sordida was evaluated Amamá other neighboring rural villages northwestern Argentina for five years after massive spraying with deltamethrin 1992 selective sprays thereafter. Local residents expert staff collected triatomines domiciliary peridomestic sites. During 1993-1997, the T. 2.4% 664 0.7% 268 0.2% 832 sordida. more frequently detected adult bugs at infected guasayana were nymphs adults, respectively,...
In this longitudinal study 5,710 people were included. The inclusion criteria two positive serological results for Trypanosoma cruzi infection, 15 and 50 years old no other demostrable diesease at the time of study. five year follow up 1,117 patients lost. involved yearly evaluation serology, clinical examination, X-ray torax, ECG, 4,593 263 contacted home because they did not assist their consultant. Time average was 5.3 years. Eighty nine (1.5%) died during follow-up period, 63 (71%) by...
Abstract Effects of the presence chickens on population density bug Triatoma infestans , principal vector Chagas disease, were investigated by standardized sampling (indoors and peridomestically) from sixty‐eight houses three rural communities in north‐west Argentina, during March 1992. The domiciliary T. increased linearly with percentage bugs that fed chickens, as identified agar double‐diffusion tests. Bug was significantly higher where hens usually nested indoors than those they did not,...
Journal Article Host-Feeding Patterns of Domiciliary Triatoma infestans (Hemiptera: Reduviidae) in Northwest Argentina: Seasonal and Instar Variation Get access Ricardo E. GüRtler, GüRtler 1Laboratorio de Ecología General, Departamento Ciencias Biológicas, Universidad Buenos Aires, Ciudad Universitaria, 1428 Argentina2Laboratory Populations, Rockefeller University, 1230 York Avenue, New York, NY 10021 Search for other works by this author on: Oxford Academic PubMed Google Scholar Maria C....
"Result of a First Step Toward Community-Based Surveillance Transmission Chagas' Disease with Appropriate Technology in Rural Areas" published on Apr 1992 by The American Society Tropical Medicine and Hygiene.
Summary The diagnosis and management of von Willebrand disease (VWD) in paediatrics is challenging. Our aim was to review patient’s characteristics related biological clinical response DDAVP children with low factor (VWF) levels bleeding history from a single institution. We included retrospective cohort 221 (median age 11 years; 137 females): 27 type 1 (VWF within 15–30 IU dL-1) 194 possible 31–49 dL-1). infusion-test performed 214/221 children, 93.4% whom showed good response. Patients...
This study investigates the kinetics of interleukine-6 (IL-6) and interleukine-10 (IL-10) levels in dengue virus (DENV) infections during febrile stage. Viremic patients were categorized into two phases based on anti-DENV IgM presence. Among 259 patients, 71% Phase I 29% II. Secondary infections, accounting for 38.2% cases, exhibited earlier elevations IL-6 IL-10 than primary suggesting that pre-existing immune memory primes faster cytokine release. Thrombocytopenia elevated aspartate...
In mud-and-thatch houses of Santiago del Estero Province, north-west Argentina, where no insecticides had been sprayed officially to control domestic infestations the Chagas disease vector Triatoma infestans (Klug) (Hemiptera: Reduviidae), two knockdown (KD) insecticidal collection procedures were compared with standard flush-out (FO) method for sampling T. infestans. Bugs collected by FO using 0.2% tetramethrin in bedrooms (1) 41 Amamá village employing 1 man-hour capture effort per house,...