Observations on the epidemiology of contagious bovine pleuropneumonia: Mycoplasma mycoides in urine.

During field epidemiological investigations into an outbreak of contagious bovine pleuropneumonia. Mycoplasma mycoides var mycoides was detected in the urine of 14 out of 19 infected cattle. The titres of the organism ranged from 10(1) to 10(8) organisms per ml of urine. The main factor affecting the excretion was the severity of the disease.