Seroprevalence of Trypanosoma cruzi infection and vector control activities in rural communities of the southern Gran Chaco (Argentina)

Acta Tropica ◽  
2010 ◽  
Vol 113 (3) ◽  
pp. 257-262 ◽  
Author(s):  
Mariana Laura Moreno ◽  
Edgardo Moretti ◽  
Beatriz Basso ◽  
Maria Frias Céspedes ◽  
Silvia S. Catalá ◽  
...  
Keyword(s):  
Rural Communities ◽  
Trypanosoma Cruzi ◽  
Vector Control ◽  
Gran Chaco ◽  
Cruzi Infection

scholarly journals Exploring the association between Trypanosoma cruzi infection in rural communities and environmental changes in the southern Gran Chaco

2012 ◽  
Vol 107 (2) ◽  
pp. 231-237 ◽  
Author(s):  
Mariana Laura Moreno ◽  
Laura Hoyos ◽  
Marcelo Cabido ◽  
Silvia Susana Catalá ◽  
David Eladio Gorla
Keyword(s):  
Rural Communities ◽  
Trypanosoma Cruzi ◽  
Environmental Changes ◽  
Gran Chaco ◽  
Cruzi Infection

Risk Factors for Trypanosoma cruzi Infection among Children in Central Brazil: A Case-Control Study in Vector Control Settings

1995 ◽  
Vol 52 (2) ◽  
pp. 183-187 ◽  
Author(s):  
Ana Lucia S. Sgambatti De Andrade ◽  
Jose Maria P. Souza ◽  
Celina Maria T. Martelli ◽  
Fabio Zicker ◽  
Ionizete G. Silva
Keyword(s):  
Risk Factors ◽  
Trypanosoma Cruzi ◽  
Vector Control ◽  
Case Control Study ◽  
Case Control ◽  
Central Brazil ◽  
Cruzi Infection ◽  
Control Study

Analysis of the transmission of Trypanosoma cruzi infection through hosts and vectors

Parasitology ◽  
2016 ◽  
Vol 143 (9) ◽  
pp. 1168-1178 ◽  
Author(s):  
MARÍA C. FABRIZIO ◽  
NICOLÁS J. SCHWEIGMANN ◽  
NORBERTO J. BARTOLONI
Keyword(s):  
Trypanosoma Cruzi ◽  
Infected Individual ◽  
Human Infection ◽  
Control Measures ◽  
Gran Chaco ◽  
Reproduction Numbers ◽  
Route Of Transmission ◽  
Three Stages ◽  
Cruzi Infection ◽  
Multiple Transmission

SUMMARYCalculating epidemiological measures of infection by Trypanosoma cruzi, the causative agent of Chagas disease, is complex, because it involves several species, different stages of infection in humans and multiple transmission routes. Using the next-generation matrix method, we analysed a model which considers the three stages of human infection, triatomines and dogs (the main domestic reservoirs of T. cruzi when triatomines are present) and the main transmission routes. We derived R0 and type-reproduction numbers T. We deduced formulas for the number of new infections generated through each transmission route by each infected individual. We applied our findings in Argentine Gran Chaco. The expressions achieved allowed quantifying the high infectivity of dogs and emphasizing the epidemiological importance of the long and asymptomatic chronic indeterminate stage in humans in the spread of the infection. According to the model, it is expected that one infected human infects 21 triatomines, that 100 infected triatomines are necessary to infect one human and 34 to infect a dog, and that each dog infects on average one triatomine per day. Our results may allow quantifying the effect of control measures on infected humans, triatomines and dogs (or other highly infected vertebrate) or on a specific route of transmission, in other scenarios.

scholarly journals Seroprevalence of Trypanosoma cruzi infection in three rural communities in Guatemala

1999 ◽  
Vol 6 (2) ◽  
pp. 110-116 ◽  
Author(s):  
George J. Greer ◽  
Nancy A. Nix ◽  
Celia Cordón-Rosales ◽  
Beatriz Hernández ◽  
Charles M. MacVean ◽  
...  
Keyword(s):  
Rural Communities ◽  
Trypanosoma Cruzi ◽  
Cruzi Infection

scholarly journals Human Trypanosoma cruzi infection is driven by eco-social interactions in rural communities of the Argentine Chaco

2019 ◽  
Vol 13 (12) ◽  
pp. e0007430 ◽  
Author(s):  
Maria del Pilar Fernández ◽  
Maria Sol Gaspe ◽  
Paula Sartor ◽  
Ricardo E. Gürtler
Keyword(s):  
Rural Communities ◽  
Trypanosoma Cruzi ◽  
Social Interactions ◽  
Cruzi Infection

scholarly journals Heterogeneities in the Ecoepidemiology of Trypanosoma cruzi Infection in Rural Communities of the Argentinean Chaco

2014 ◽  
Vol 90 (6) ◽  
pp. 1063-1073 ◽  
Author(s):  
M. Victoria Cardinal ◽  
Leonardo A. Ceballos ◽  
María Sol Gaspe ◽  
M. Marcela Orozco ◽  
Julián A. Alvarado-Otegui ◽  
...  
Keyword(s):  
Rural Communities ◽  
Trypanosoma Cruzi ◽  
Cruzi Infection

scholarly journals Unprecedented incidence of Trypanosoma cruzi infections in a cohort of dogs directly detected through longitudinal tracking at multi-dog kennels, Texas, USA

2021 ◽  
Author(s):  
Rachel E Busselman ◽  
Alyssa C Meyers ◽  
Italo B Zecca ◽  
Lisa D Auckland ◽  
Andres H Castro ◽  
...  
Keyword(s):  
Trypanosoma Cruzi ◽  
Vector Control ◽  
Treatment Options ◽  
Protozoan Parasite ◽  
Health Concern ◽  
Control Methods ◽  
Longitudinal Tracking ◽  
The Usa ◽  
Cruzi Infection ◽  
Over Time

Canine Chagas disease, caused by the protozoan parasite Trypanosoma cruzi, is increasingly recognized as a health concern for dogs in the USA, and infected dogs may signal geographic regions of risk for human disease. Dogs living in multi-dog kennel environments where triatomine vectors are endemic may be at high risk for infection. We monitored a cohort of 64 T. cruzi -infected and uninfected dogs from across 10 kennels in Texas, USA, to characterize changes in infection status over time. We used robust diagnostic criteria in which reactivity on multiple independent platforms was required to be considered positive. Among the 30 dogs enrolled as serologically- and/or PCR-positive, all but one dog showed sustained positive T. cruzi diagnostic results over time. Among the 34 dogs enrolled as serologically- and PCR-negative, 10 new T. cruzi infections were recorded over a 12-month period. The resulting incidence rate was 30.7 T. cruzi infections per 100 dogs per year. This study highlights the risk of T . cruzi infection to dogs in kennel environments, despite multiple vector control methods employed by kennel owners. To protect both dog and human health, there is an urgent need to develop more integrated vector control methods as well as prophylactic and curative antiparasitic treatment options for T. cruzi infection in dogs.

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