A prospective study of the effects of sustained vector surveillance following community-wide insecticide application on Trypanosoma cruzi infection of dogs and cats in rural northwestern Argentina

Domestic dogs were used as natural sentinels to assess prospectively the long-term impact of selective, community-based spraying with pyrethroid insecticides after community-wide spraying on transmission of Trypanosoma cruzi in rural villages under surveillance between 1992 and 2002. In 2000 and 200...

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Publicado: 2006
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cat
dog
age
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029637_v75_n4_p753_Cardinal
http://hdl.handle.net/20.500.12110/paper_00029637_v75_n4_p753_Cardinal
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spelling paper:paper_00029637_v75_n4_p753_Cardinal2023-06-08T14:23:21Z A prospective study of the effects of sustained vector surveillance following community-wide insecticide application on Trypanosoma cruzi infection of dogs and cats in rural northwestern Argentina insecticide Argentina article cat community controlled study dog multivariate logistic regression analysis nonhuman parasite vector prevalence rural area serology Trypanosoma cruzi trypanosomiasis xenodiagnosis age animal animal disease animal housing Argentina cat disease Chagas disease disease carrier disease transmission dog disease female growth, development and aging housing isolation and purification male parasitology prospective study Triatoma Canis familiaris Triatoma infestans Trypanosoma cruzi Age Factors Animals Argentina Cat Diseases Cats Chagas Disease Dog Diseases Dogs Female Housing Housing, Animal Insect Vectors Insecticides Male Prevalence Prospective Studies Triatoma Trypanosoma cruzi Domestic dogs were used as natural sentinels to assess prospectively the long-term impact of selective, community-based spraying with pyrethroid insecticides after community-wide spraying on transmission of Trypanosoma cruzi in rural villages under surveillance between 1992 and 2002. In 2000 and 2002 light infestations by Triatoma infestans were recorded, and 523 dogs and cats were examined serologically or by xenodiagnosis. The prevalence of T. cruzi infection in dogs decreased from 65% at baseline to 8.9% and 4.7% at 7.5 and 10 years after sustained vector surveillance, respectively. The average annual force of infection dropped 260-fold from 72.7 per 100 dog-years at baseline to <0.3% in 2002, as determined prospectively and retrospectively from the age-prevalence curve of native dogs born during surveillance. Multiple logistic regression analysis showed that prevalent cases in dogs in 2000 and 2002 were associated positively and significantly with the peak number of T. infestans caught in domestic areas at the dog's compound during its lifetime. The sustained decline in T. cruzi infections in dogs and cats is the result of selective, community-based insecticide spraying that kept the abundance of infected T. infestans at marginal levels, fast host population turnover, and low immigration rates from areas with active transmission. Copyright © 2006 by The American Society of Tropical Medicine and Hygiene. 2006 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029637_v75_n4_p753_Cardinal http://hdl.handle.net/20.500.12110/paper_00029637_v75_n4_p753_Cardinal
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic insecticide
Argentina
article
cat
community
controlled study
dog
multivariate logistic regression analysis
nonhuman
parasite vector
prevalence
rural area
serology
Trypanosoma cruzi
trypanosomiasis
xenodiagnosis
age
animal
animal disease
animal housing
Argentina
cat disease
Chagas disease
disease carrier
disease transmission
dog disease
female
growth, development and aging
housing
isolation and purification
male
parasitology
prospective study
Triatoma
Canis familiaris
Triatoma infestans
Trypanosoma cruzi
Age Factors
Animals
Argentina
Cat Diseases
Cats
Chagas Disease
Dog Diseases
Dogs
Female
Housing
Housing, Animal
Insect Vectors
Insecticides
Male
Prevalence
Prospective Studies
Triatoma
Trypanosoma cruzi
spellingShingle insecticide
Argentina
article
cat
community
controlled study
dog
multivariate logistic regression analysis
nonhuman
parasite vector
prevalence
rural area
serology
Trypanosoma cruzi
trypanosomiasis
xenodiagnosis
age
animal
animal disease
animal housing
Argentina
cat disease
Chagas disease
disease carrier
disease transmission
dog disease
female
growth, development and aging
housing
isolation and purification
male
parasitology
prospective study
Triatoma
Canis familiaris
Triatoma infestans
Trypanosoma cruzi
Age Factors
Animals
Argentina
Cat Diseases
Cats
Chagas Disease
Dog Diseases
Dogs
Female
Housing
Housing, Animal
Insect Vectors
Insecticides
Male
Prevalence
Prospective Studies
Triatoma
Trypanosoma cruzi
A prospective study of the effects of sustained vector surveillance following community-wide insecticide application on Trypanosoma cruzi infection of dogs and cats in rural northwestern Argentina
topic_facet insecticide
Argentina
article
cat
community
controlled study
dog
multivariate logistic regression analysis
nonhuman
parasite vector
prevalence
rural area
serology
Trypanosoma cruzi
trypanosomiasis
xenodiagnosis
age
animal
animal disease
animal housing
Argentina
cat disease
Chagas disease
disease carrier
disease transmission
dog disease
female
growth, development and aging
housing
isolation and purification
male
parasitology
prospective study
Triatoma
Canis familiaris
Triatoma infestans
Trypanosoma cruzi
Age Factors
Animals
Argentina
Cat Diseases
Cats
Chagas Disease
Dog Diseases
Dogs
Female
Housing
Housing, Animal
Insect Vectors
Insecticides
Male
Prevalence
Prospective Studies
Triatoma
Trypanosoma cruzi
description Domestic dogs were used as natural sentinels to assess prospectively the long-term impact of selective, community-based spraying with pyrethroid insecticides after community-wide spraying on transmission of Trypanosoma cruzi in rural villages under surveillance between 1992 and 2002. In 2000 and 2002 light infestations by Triatoma infestans were recorded, and 523 dogs and cats were examined serologically or by xenodiagnosis. The prevalence of T. cruzi infection in dogs decreased from 65% at baseline to 8.9% and 4.7% at 7.5 and 10 years after sustained vector surveillance, respectively. The average annual force of infection dropped 260-fold from 72.7 per 100 dog-years at baseline to <0.3% in 2002, as determined prospectively and retrospectively from the age-prevalence curve of native dogs born during surveillance. Multiple logistic regression analysis showed that prevalent cases in dogs in 2000 and 2002 were associated positively and significantly with the peak number of T. infestans caught in domestic areas at the dog's compound during its lifetime. The sustained decline in T. cruzi infections in dogs and cats is the result of selective, community-based insecticide spraying that kept the abundance of infected T. infestans at marginal levels, fast host population turnover, and low immigration rates from areas with active transmission. Copyright © 2006 by The American Society of Tropical Medicine and Hygiene.
title A prospective study of the effects of sustained vector surveillance following community-wide insecticide application on Trypanosoma cruzi infection of dogs and cats in rural northwestern Argentina
title_short A prospective study of the effects of sustained vector surveillance following community-wide insecticide application on Trypanosoma cruzi infection of dogs and cats in rural northwestern Argentina
title_full A prospective study of the effects of sustained vector surveillance following community-wide insecticide application on Trypanosoma cruzi infection of dogs and cats in rural northwestern Argentina
title_fullStr A prospective study of the effects of sustained vector surveillance following community-wide insecticide application on Trypanosoma cruzi infection of dogs and cats in rural northwestern Argentina
title_full_unstemmed A prospective study of the effects of sustained vector surveillance following community-wide insecticide application on Trypanosoma cruzi infection of dogs and cats in rural northwestern Argentina
title_sort prospective study of the effects of sustained vector surveillance following community-wide insecticide application on trypanosoma cruzi infection of dogs and cats in rural northwestern argentina
publishDate 2006
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029637_v75_n4_p753_Cardinal
http://hdl.handle.net/20.500.12110/paper_00029637_v75_n4_p753_Cardinal
_version_ 1768546700413108224