An evaluation programme was undertaken 11 years after the introduction
of multidrug therapy (MDT) into Bhutan, by examining the case notes o
f 3239 leprosy patients who had been under treatment at any time durin
g the period. The registered prevalence was found to have fallen marke
dly, as expected, and this had been accompanied by a clear fall in the
case detection rate as well. The lepromatous rate among new patients
rose considerably, giving epidemiological hope that the disease may be
coming under control. However, no concomitant fall in the proportion
of child cases was seen. The disability rate at detection rose slightl
y, although numbers were small. New cases were increasingly likely to
have more highly positive skin smears, and to be self-reported. Progra
mme planners should give thought to the implications of these findings
.