Becerril-Flores MA, Valle-De La Cruz A

Language: Spanish
References: 21
Page: 539-544
PDF size: 73.70 Kb.

ABSTRACT

There are reports regarding the presence of triatomine vectors of Trypanosoma cruzi, the causal agent of Chagas’ disease, and infected individuals on the coast and zones south of the State of Guerrero, Mexico. Nonetheless, there are no completed reports in the Valley of Iguala. To know with greater precision endemic zones, seropositive individuals and their health condition, T. cruzi -infected triatomines and characteristics of dwellings were studied. Seroprevalence was 1.8% by indirect ELISA and latex agglutination techniques were carried out in serum of 450 individuals of three municipalities of the Valley of Iguala. We reported presence of triatomine and conditions of dwellings. Of 71 triatomines collected, 38.2% were infected with T. cruzi. Triatoma pallidipennis was the only triatomine species found. No seropositive persons presented intestinal or cardiac problems. The greaterst percentage of infected triatomines was observed in rural zones as compared to urban. Results suggest considerable risk of infection in the Valley of Iguala but studies regarding the infectivity capacity of T. cruzi strains are required.

REFERENCES

1. 1. Dumontiel E. Update en Chagas disease in Mexico. Salud Publica Mex 1999;41:359.

2. 2. Velasco-Castrejón O, Valdespino JL, Tapia-Conyer R et al. Seroepidemiología de la enfermedad de Chagas en México. Salud Publica Mex 1992;34:186-96.

3. 3. Tay J, Schenone H, Sánchez JT, Robert L. Estado actual de los conocimientos sobre la enfermedad de Chagas en la República Mexicana. Bol Chil Parasitol 1992;47:43-53.

4. 4. Biagi F, Tay J, Guzmán-García C et al. Tetitlán Guerrero, foco endémico de enfermedad de Chagas en México. Rev Fac Med 1964;6:625-31.

5. 5. Perrin T, Dias E, Brones M. Nota previa sobre las primeras comprobaciones serológicas de la enfermedad de Chagas en México. Arch Inst Cardiol (Mex) 1974;16-17:20-4.

6. 6. Little JW, Tay J, Biagi F. A study on the susceptiblility of triatomid bugs to some Mexican strains of Trypanosoma cruzi. J Med Entomol 1966;3:252-5.

7. 7. Zárate LG, Zárate RJ. A checklist of the triatominae Chemiptera: reduviidae of Mexico. Int J Entomol 1985;27:102-27.

8. 8. Tay J. La enfermedad de Chagas en la República Mexicana. Salud Publica Mex 1980; XXII: 409-50.

9. 9. Guzmán-Bracho C. Epidemiology of Chagas disease in México: an update. Trends Parasitol 2001;17:372-6.

10. Cortés-Jiménez M, Nogueda-Torres B, Alejandre-Aguilar R, Isita-Tornell L, Ramiréz ME. Frequency of triatomine infected with Trypanosoma cruzi collected in Cuernavaca City, Morelos, Mexico. Rev Lat-Amer Microbiol 1996;38:115-9.

11. Baustista NL, García TGS, Haro AI, Salazar SPM. Importance of Triatoma pallidipennis (Hemiptera: Reduviidae) as a vector of Trypanosoma cruzi (Kinetoplastida: Trypanosomatidae) in the state of Morelos, Mexico, and possible ecotopes. J Med Entomol 1999;36:233-5.

12. Daniel WW. Bioestadistica. Base para el analisis de las ciencias de la salud. 5ª reimp. Uteha. Noriega Editores. Ed. Limusa, S.A. de C.V. México DF 1999. p.139-70.

13. Camargo EP. Growth and differentiation in Trypanosoma cruzi. I. Origin of metacyclic trypanosomes in liquid medium. Re Inst Med Trop Sao Paulo 1964;6:93-100.

14. Lent H, Wrydodzinsky P. Revision of the triatominae (Hemiptera:Reduviidae) and their signifficance as vectors of Chagas’ disease. Bull Am Mus Nat Hist, 1979; 163: 123-520.

15. Novy FG, Mac Neal WJ. On the cultivation of Trypanosoma brucei.J Infect Dis 1904;1:1-30.

16. Rangel-Flores H, Sanchez B, Mendoza-Duarte J, Barnabe C, Brenier FS, Ramos C, Espinoza B. Serologic and parasitologic demonstration of Trypanosoma cruzi infections in an urban area of central México: correlation with electrocardiographic alterrationss. Am J Trop Med Hyg 2001;65:887-95.

17. Martínez-Ibarra JA, Kattain-Duchateu G. Biology of Triatroma pallidipennis Stal 1945 (Hemiptera: Reduviidae: Triatominae) under laboratory conditions. Mem Inst Oswaldo Cruz 1999;94:837-9

18. Zárate LG, Zárate RJ, Tempelis CH, Goldsmith RS. The biology and behavior of Triatoma barberi (Hemiptera: Reduviidae) in Mexico. J Med Entomol 1980;2:103-116.

19. Alejandre-Aguilar R, Nogueda-Torres B, Calvo-Méndez ML, Cortés-Jiménez M. Estudio comparativo de la susceptibilidad de cinco especies de triatominos (insecta: Reduviidae) a la infección con Trypanosoma cruzi. Rev Lat-amer Microbiol 1993;35:201-206.

20. Salazar SPM, Haro AI, Uribarren BT. Chagas disease in Mexico. Parasitol Today 1988;4:348-51.

21. Vidal-Acosta V, Ibañez-Bernal S, Martínez-Campos C. Natural Trypanosoma cruzi infection of triatominae bugs associated with human habitations in Mexico. Salud Publica Mex 2000;42:496-503.