Examining 52 samples of stools from calves with diarrhea from the region of Jaboticabal, SP, Brazil , one of the strains of Escherichia coli isolated, as examined by the Polymerase Chain Reaction (PCR), harbored the genes encoding for the LT-II thermolabile enterotoxin. This is the first report on the isolation of enterotoxigenic E. coli from calves with diarrhea in Brazil harboring the genes for LT-II enterotoxin. In our country, strains of LT-II + E. coli have been reported to occur only in foods of animal origin.
LT-II enterotoxin; gene detection; PCR; Brazil
