Virulence properties and characteristics of Shiga toxin-producing Escherichia coli in São Paulo, Brazil, from 1976 through 1999
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2004-02-01
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Vaz, Tania Mara Ibelli
Irino, Kinue
Kato, Maria Aide M. F.
Dias, AMG
Gomes, Tania Aparecida Tardelli [UNIFESP]
Medeiros, MIC
Rocha, MMA
Guth, Beatriz Ernestina Cabilio [UNIFESP]
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Twenty-nine Shiga toxin-producing Escherichia coli (STEC) strains were identified in a collection of 2,607 isolates from patients with diarrhea in S (a) over tildeo Paulo, Brazil, from 1976 to 1999. the STEC strains belonged mainly to serotypes O111:HNM (HNM, nonmotile) (13 of 29 [44.8%]), O111:H8 (7 of 29 [24%]), and O26:H11 (4 of 29 [13.8%]); stx, eae (26 of 29 [89.6%]), in combination with either enterohemorrhagic E. coli hlyA (11 of 26 [42%]) or astA (24 of 26 [92.3%]), prevailed. the 0111 STEC strains were distinguished by their inability to decarboxylate lysine. the predominance of STEC 0111 and 026 since the late 1970s and the identification of STEC serotypes 055:H19, 093:H19, and O118:H16 in association with human infections in Brazil are described for the first time.
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Journal of Clinical Microbiology. Washington: Amer Soc Microbiology, v. 42, n. 2, p. 903-+, 2004.