I shall discuss primary tuberculosis in the child, with particular reference to the results obtained in a statistical analysis of 6,329 fluoroscopic examinations made in the University of Vienna Kinderklinik (in the service of Professor Pirquet) from 1921 to 1924, inclusive. These cases represent all the fluoroscopic examinations of the lung made in the outpatient department, and are from an aggregate of 40,818 patients consecutively examined. None of these children were well, that is, none were simply prophylactically examined, but they were brought to the clinic because of fever or anorexia, pallor or loss of weight, or cough of the Schick or productive type, or were examined in order to clarify or confirm physicial observations.
The relative incompleteness inherent in records from the outpatient department, largely because of lack of cooperation and ignorance on the part of the children's parents or guardians, of failure to return for follow-up treatment and