Could the Chagas disease elimination programme in Venezuela be compromised by reinvasion of houses by sylvatic Rhodnius prolixus bug populations?
Trop Med Int Health
; 11(10): 1585-93, 2006 Oct.
Article
em En
| MEDLINE
| ID: mdl-17002733
The Andean Pact Initiative (1997) committed Andean countries to eliminate vectorial transmission of Chagas disease by 2010 via widespread residual insecticide spraying. In Venezuela, this aim could be compromised by reinvasion of houses by palm tree populations of the major vector Rhodnius prolixus. To test this hypothesis, a multivariate logistic regression was undertaken of risk factors for triatomine infestation and colonization in 552 houses and 1068 peri-domestic outbuildings in Barinas State. After adjusting for other risk factors, including palm roofs, R. prolixus infestation and colonization of outbuildings (and, to some extent, houses) was significantly associated with proximity to high densities of Attalea butyracea palm trees. House infestation and/or colonization was also positively associated with bug density in peri-domestic outbuildings, the presence of pigsties and nests. Hence, R. prolixus populations in ineffectively sprayed outbuildings could also provide an important source of house re-infestations. The secondary vector Triatoma maculata was mainly found associated with the presence of hens nesting both indoors and outdoors.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Rhodnius
/
Doença de Chagas
/
Habitação
/
Insetos Vetores
Tipo de estudo:
Etiology_studies
/
Risk_factors_studies
Aspecto:
Determinantes_sociais_saude
Limite:
Animals
/
Humans
País/Região como assunto:
America do sul
/
Venezuela
Idioma:
En
Revista:
Trop Med Int Health
Assunto da revista:
MEDICINA TROPICAL
/
SAUDE PUBLICA
Ano de publicação:
2006
Tipo de documento:
Article
País de publicação:
Reino Unido