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Epidemiology of Chagas disease in Guatemala: infection rate of Triatoma dimidiata, Triatoma nitida and Rhodnius prolixus (Hemiptera, Reduviidae) with Trypanosoma cruzi and Trypanosoma rangeli (Kinetoplastida, Trypanosomatidae)
Monroy, Carlota; Rodas, Antonieta; Mejía, Mildred; Tabaru, Yuichiro.
  • Monroy, Carlota; Universidad de San Carlos. Facultad de Ciencias Químicas y Farmacia. Escuela de Biología. Ciudad de Guatemala. GT
  • Rodas, Antonieta; Universidad de San Carlos. Facultad de Ciencias Químicas y Farmacia. Escuela de Biología. Ciudad de Guatemala. GT
  • Mejía, Mildred; Universidad de San Carlos. Facultad de Ciencias Químicas y Farmacia. Escuela de Biología. Ciudad de Guatemala. GT
  • Tabaru, Yuichiro; Japanese International Cooperation Agency. Chiba. JP
Mem. Inst. Oswaldo Cruz ; 98(3): 305-310, Apr. 2003. tab
Artigo em Inglês | LILACS | ID: lil-340106
RESUMO
A five-year domiciliary collection in the 22 departments of Guatemala showed that out of 4,128 triatomines collected, 1,675 were Triatoma dimidiata (Latreille, 1811), 2,344 were Rhodnius prolixus Stal 1859, and only 109 were T. nitida Usinger 1939. The Chagas disease parasite, Trypanosoma cruzi, was found in all three species. Their natural infection rates were similar in the first two species (20.6 percent; 19.1 percent) and slightly lower in T. nitida(13.8 percent). However there was no significant difference in the infection rates in the three species (p = 0.131). T. dimidiata males have higher infection rates than females (p = 0.030), whereas for R. prolixus there is no difference in infection rates between males and females (p = 0.114). The sex ratios for all three species were significantly skewed. More males than females were found inside houses for T. dimidiata (p < 0.0001) and T. nitida (p = 0.011); a different pattern was seen for R. prolixus (p = 0.037) where more females were found. Sex ratio is proposed as an index to show the mobility of T. dimidiata in different populations. T. dimidiata is widely distributed in the country, and is also the main vector in at least ten departments, but R. prolixus with higher vectorial capacity is an important vector in at least two departments
Assuntos
Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Triatoma / Trypanosoma cruzi / Doença de Chagas / Insetos Vetores Tipo de estudo: Estudo de rastreamento Limite: Animais / Feminino / Humanos / Masculino País/Região como assunto: América Central / Guatemala Idioma: Inglês Revista: Mem. Inst. Oswaldo Cruz Assunto da revista: Medicina Tropical / Parasitologia Ano de publicação: 2003 Tipo de documento: Artigo País de afiliação: Guatemala / Japão Instituição/País de afiliação: Japanese International Cooperation Agency/JP / Universidad de San Carlos/GT

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Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Triatoma / Trypanosoma cruzi / Doença de Chagas / Insetos Vetores Tipo de estudo: Estudo de rastreamento Limite: Animais / Feminino / Humanos / Masculino País/Região como assunto: América Central / Guatemala Idioma: Inglês Revista: Mem. Inst. Oswaldo Cruz Assunto da revista: Medicina Tropical / Parasitologia Ano de publicação: 2003 Tipo de documento: Artigo País de afiliação: Guatemala / Japão Instituição/País de afiliação: Japanese International Cooperation Agency/JP / Universidad de San Carlos/GT