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Journal of Clinical Microbiology, February 2002, p. 694-697, Vol. 40, No. 2
0095-1137/01/$04.00+0     DOI: 10.1128/JCM.40.2.694-697.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Type IV Longus Pilus of Enterotoxigenic Escherichia coli: Occurrence and Association with Toxin Types and Colonization Factors among Strains Isolated in Argentina

Mariana G. Pichel,1 Norma Binsztein,1 Firdausi Qadri,2 and Jorge A. Girón3*

Instituto Nacional de Enfermedades Infecciosas, ANLIS "Carlos G. Malbrán," Buenos Aires, Argentina,1 International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh,2 Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, México3

Received 15 August 2001/ Returned for modification 29 September 2001/ Accepted 18 November 2001

The longus type IV pilus structural gene (lngA) was sought among 217 clinical enterotoxigenic Escherichia coli (ETEC) strains isolated in Argentina. lngA was present in 20.7% of the isolates and was highly associated with ETEC producing heat-stable toxin and the most common colonization factors. The prevalence of longus among ETEC strains in Argentina was comparable to that of colonization factor antigen I (CFA/I), CFA/II, and CFA/IV in other regions of the world.

* Corresponding author. Mailing address: Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Apartado Postal 1622, Puebla, México. Phone: 52 22 33 20 10. Fax: 52 22 44 45 18. E-mail: jagiron{at}siu.buap.mx.

Journal of Clinical Microbiology, February 2002, p. 694-697, Vol. 40, No. 2
0095-1137/01/$04.00+0     DOI: 10.1128/JCM.40.2.694-697.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.



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