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Infect. Immun., Nov 1995, 4543-4545, Vol 63, No. 11
Copyright © 1995, American Society for Microbiology

Serum response of Escherichia coli strains causing dyspepsia and urinary tract infection: relation to alpha-hemolysin production and O type

L Siegfried, M Kmetova, V Janigova, M Sasinka and V Takacova
Institute of Medical Microbiology, Faculty of Medicine, Safarik University, Kosice, Slovakia.

A total of 109 alpha-hemolytic and 104 nonhemolytic Escherichia coli isolates from children with dyspepsia and urinary tract infections were investigated for resistance to the bactericidal activity of human serum. A significantly higher proportion of serum resistance was found in alpha-hemolytic E. coli isolates than in nonhemolytic isolates (P < 0.01). An association between the titer of alpha-hemolysin produced and serum resistance was found.

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