Impact of MDT on leprosy as measured by selective indicators

Abstract

The impact of multidrug therapy (MDT) on the leprosy situation in endemic districts where MDT has been introduced, is studied, using a hypothetical model. This analysis indicates that there will be significant falls in prevalence rates during the first 5 years, mainly as a result of discharge of cases during screening and due to shortening of the duration of treatment. These changes have to be interpreted with caution. Already some districts like Wardha in India have shown dramatic falls in prevalence rates from 11.1 in 1981 to 1.8 in 1987. The impact of MDT on disease transmission as measured by decline in incidence rates and case detection rates will, however, be gradual.