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The Journal of Medical Microbiology, Vol 35, Issue 3 162-167, Copyright © 1991 by Society for General Microbiology

JOURNAL ARTICLE

Enterotoxigenic Escherichia coli associated with infant diarrhoea in Galicia, north-western Spain

J. Blanco, E. A. Gonzalez, M. Blanco, J. I. Garabal, M. P. Alonso, S. Fernandez, R. Villanueva, A. Aguilera, M. A. Garcia, J. Torres and al. et
Departamento de Microbiologia y Parasitologia, Facultad de Veterinaria, Universidad de Santiago, Lugo, Spain.

To assess the role of enterotoxigenic Escherichia coli (ETEC) in infantile diarrhoea, 482 children with diarrhoea and 103 healthy controls, from three localities of Galicia, north-western Spain, were investigated between 1985 and 1988. Rotavirus (37.3%) and Salmonella spp. (12.8%) were the most common causal agents, followed by ETEC (3.9%), Campylobacter jejuni (2.3%), Shigella spp. (0.9%) and Yersinia enterocolitica (0.5%). ETEC were significantly more frequently isolated from children with diarrhoea who were under 1 month of age (26.5%) than from older diarrhoeic children (2.2%) (p less than 0.001) or from healthy children who were under 1 month of age (0%) (p less than 0.05). Among children who harboured ETEC, five of the nine children under 1 month of age developed diarrhoea in hospital, whereas none of the 10 children over 1 month of age did so. Seventeen ETEC isolates produced heat-stable enterotoxin (STa) only, four produced only heat-labile enterotoxin (LT), and two produced both toxins. Colonisation factor antigens CFA/I and CFA/II were detected in 11 (55.0%) of the 20 ETEC isolates that remained enterotoxigenic after maintenance in the laboratory. Most ETEC isolates belonged to serotypes O153:K-:H45 (nine STa+ CFA/I+ isolates), O27:K-:H7 (three STa+ isolates) or O6:K15:H16 (two LT+ STa+ CFA/II+ isolates). Our results suggest that ETEC constitute an important cause of neonatal diarrhoea in this part of Spain.


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A. B. F. Pacheco, L. C. S. Ferreira, M. G. Pichel, D. F. Almeida, N. Binsztein, and G. I. Viboud
Beyond Serotypes and Virulence-Associated Factors: Detection of Genetic Diversity among O153:H45 CFA/I Heat-Stable Enterotoxigenic Escherichia coli Strains
J. Clin. Microbiol., December 1, 2001; 39(12): 4500 - 4505.
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