- A DNA probe to identify enterohemorrhagic Escherichia coli of O157:H7 and other serotypes that cause hemorrhagic colitis and hemolytic uremic syndrome. Levine, M.M., Xu, J.G., Kaper, J.B., Lior, H., Prado, V., Tall, B., Nataro, J., Karch, H., Wachsmuth, K. J. Infect. Dis. (1987)