[Use of the coagglutination test in the detection of thermolabile enterotoxin of Escherichia coli].

The authors examined 39 strains of E. coli isolated from patients with the clinical diagnosis of diarrhoea for the presence of thermolabile enterotoxin (LT-I). For assessment of LT-I adaptation of the staphylococcal coagglutination technique was used. Suspension of a strain of staphylococcus aureus Cowan I, MAU, 55/64 was sensitized with a specific antibody against LT-I (not diluted and diluted). 50 ng purified enterotoxin created with the thus sensitized staphylococcal suspension a still reproducible coagglutination. The above test revealed that none of the tested strains of E. coli produced the thermolabile LT-I enterotoxin.