Characteristics of virulence signs of enteroinvasive Escherichia coli (EIEC) isolated in CSFR and Bulgaria in 1988-1990.

During 1988-1990 a total of 345 virulent and avirulent strains of enteroinvasive E. coli (EIEC) were isolated from human faeces in microbiological laboratories in Prague and Sofia. This group of strains belonged to a total of 11 serotypes.