The epidemiologic importance of Triatoma brasiliensis as a Chagas disease vector in Brazil: a revision of domiciliary captures during 1993-1999
Mem. Inst. Oswaldo Cruz
;
98(4): 443-449, June 2003. mapas, tab
Artículo
en Inglés
| LILACS
| ID: lil-344232
RESUMO
To clarify the epidemiologic importance of Triatoma brasiliensis, the most important Chagas disease vector in the Northeastern of Brazil, capture data related to this species, its distribution, capture index, and percentages of natural infection by Trypanosoma cruzi were examined in 12 different Brazilian states. The Brazilian National Health Foundation collected these data from 1993 to 1999, a period during which a total of 1,591,280 triatomines (21 species) were captured in domiciles within the geographic range of T. brasiliensis. Of this total, 422,965 (26.6 percent) were T. brasiliensis, 99.8 percent of which were collected in six states, and 54 percent in only one state (Ceará). The percentage of bugs infected with T. cruzi varied significantly among states, ranging from 0 percent (Goiás, Maranhão, Sergipe, and Tocantins) to more than 3 percent (Alagoas, Minas Gerais, and Rio Grande do Norte) with an average of 1.3 percent. This latter value represents a dramatic reduction in the natural infection percentages since 1983 (6.7 percent) suggesting that, despite the impossibility of eradicating this native species, the control measures have significantly reduced the risk of transmission. However, the wide geographic distribution of T. brasiliensis, its high incidence observed in some states, and its variable percentages of natural infection by T. cruzi indicate the need for sustained entomological surveillance and continuous control measures against this vector
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Asunto principal:
Triatoma
/
Trypanosoma cruzi
/
Enfermedad de Chagas
/
Vivienda
/
Insectos Vectores
Límite:
Animales
/
Humanos
País/Región como asunto:
America del Sur
/
Brasil
Idioma:
Inglés
Revista:
Mem. Inst. Oswaldo Cruz
Asunto de la revista:
Medicina Tropical
/
Parasitología
Año:
2003
Tipo del documento:
Artículo
/
Congreso y conferencia
País de afiliación:
Brasil
/
Estados Unidos
Institución/País de afiliación:
CDC Atlanta/US
/
Centro Universitário de Barra Mansa/BR
/
Fiocruz/BR
/
Fundação Nacional da Saúde/BR
/
Pan American Health Organization/BR
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