This record of the second international symposium on pyelonephritis documents recent investigations of the prevalence, etiology, and significance of urinary tract infections. Although some parts of the book such as that related to the renal lesion caused by analgesic abuse will be of little concern to most pediatricians, other sections will be of considerable interest.
The frequency of bacteriuria in the female population is emphasized by a number of surveys of school children, pregnant women, and family constellations. Methods of detecting bacteriuria are reviewed, and the superiority of quantitative urine cultures over chemical tests and smears is again apparent. The possibility of differentiating bladder from renal infections by an increase in specific antibody titer and loss of concentration ability in the latter is suggested. A large proportion of urinary tract infections are shown to be caused by a few nephropathogenic serotypes of Escherichia coli, but the frequency of infection with