Tuberculin PPD RT23: has it lost some of its potency?
PPD RT23 is a tuberculin that is used worldwide. Korea has been using 1TU RT23 for its nationwide tuberculosis prevalence surveys at five-yearly intervals since 1965, and found a drop in its potency after the 1975 survey. This finding draws attention to the interpretation of tuberculin survey data observed with RT23 at different time periods.
Korean Institute of Tuberculosis, Korean National Tuberculosis Association, Seoul.
S J
SJ
Kim
Y P
YP
Hong
G H
GH
Bai
E K
EK
Lee
W J
WJ
Lew
D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D002648:Child; D002675:Child, Preschool; D003625:Data Collection; D005260:Female; D006801:Humans; D007723:Korea / Q000453:epidemiology; D008297:Male; D015995:Prevalence; D012680:Sensitivity and Specificity; D014374:Tuberculin Test / Q000592:standards*; D014376:Tuberculosis / Q000175:diagnosis* / Q000453:epidemiology