This report is based on the careful examination of 150 children whose parents were under treatment for pulmonary tuberculosis at the Bellevue Hospital Tuberculosis Clinic. The examinations were made as a part of the routine of the clinic work in an endeavor to supervise these families and to discover unsuspected cases of tuberculosis.
The children observed lived in tenements, in most instances under insanitary conditions and in close association with their parents, the majority of whom had pulmonary tuberculosis in an advanced stage. With few exceptions the children were sent for examination to the clinic, not because of any symptoms of which they complained, but simply as a routine procedure on the part of the visiting nurse.
Their ages varied from 2 to 15 years, with an average age of 8½ years.
BASIS OF DIAGNOSIS
The difficulty of diagnosis in such cases is easily appreciated, but as preventive work of