Workers interested in tuberculous infection in children are aware that its incidence, measured either by clinical signs or by the presence of a positive reaction to tuberculin, has been decreasing. It has been my impression that this decline has been felt in Rochester and that the severity of the infection itself has been decreasing. This analysis was undertaken to determine the annual incidence of tuberculous infection here and the annual percentage of children with positive reactions to tuberculin who show clinical or roentgenologic evidence of the disease. Any change may in a manner determine whether the virulence of the organism has altered.
Since 1926, when the Strong Memorial Hospital and the Rochester Municipal Hospital first admitted patients, a tuberculin test of all children admitted to the pediatric division has been a routine. The children referred to in this study are from this group. In determining the annual distribution
BEAVEN PW. EXTENT AND NATURE OF THE DECLINE OF TUBERCULOUS INFECTION IN CHILDREN: AN ANALYSIS OF DATA CONCERNING 4,982 CHILDREN TESTED WITH OLD TUBERCULIN DURING THE YEARS FROM 1926 TO 1934 INCLUSIVE. Am J Dis Child. 1936;52(3):565–586. doi:10.1001/archpedi.1936.04140030055005
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