title: Frequency of Escherichia coli strains producing heat-labile toxin or heat-stable toxin or both in children with and without diarrhea in São Paulo.
abstract: Enterotoxigenic Escherichia coli strains were isolated from 32 (13.4%) of 245 children with diarrhea and from 11 (11.4%) of 96 children of the control group. Strains producing heat-labile toxin were found more frequently in normal children than in children with diarrhea. Strains producing heat-stable toxin and both heat-labile and heat-stable toxins were isolated only from children with diarrhea. Association of these strains with diarrhea was highly significant as shown by statistical analysis. The O:H types and the colonization factors of strains producing heat-stable toxin and both heat-labile and heat-stable toxins are presented.
mesh_terms: D001427:Bacterial Toxins; D001938:Brazil; D002648:Child; D002675:Child, Preschool; D003967:Diarrhea / Q000382:microbiology*; D004768:Enterotoxins / Q000096:biosynthesis*; D004926:Escherichia coli / Q000302:isolation & purification* / Q000378:metabolism; D029968:Escherichia coli Proteins; D005243:Feces / Q000382:microbiology*; D006801:Humans; D007223:Infant
chemical_list: D001427:Bacterial Toxins; D004768:Enterotoxins; D029968:Escherichia coli Proteins; C034151:heat stable toxin (E coli); C027538:heat-labile enterotoxin, E coli