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Limited duration acedapsone prophylaxis in leprosy.

P N Neelan, P Sirumban, N Sivaprasad

    Indian Journal of Leprosy
    |April 1, 1986
    PubMed
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    Acedapsone chemoprophylaxis significantly reduced leprosy incidence in child contacts of multibacillary cases. This leprosy prevention strategy showed 56.7% protection, highlighting its potential in public health interventions.

    Area of Science:

    • * Tropical Medicine
    • * Infectious Diseases
    • * Public Health

    Background:

    • * Leprosy remains a significant public health concern, particularly in endemic regions.
    • * Chemoprophylaxis is a potential strategy to prevent leprosy transmission and disease progression.
    • * Understanding the efficacy of prophylactic agents in high-risk populations is crucial.

    Purpose of the Study:

    • * To evaluate the efficacy of acedapsone chemoprophylaxis in preventing leprosy among child contacts of multibacillary leprosy cases.
    • * To determine the protective effect and identify demographic subgroups benefiting most from prophylaxis.

    Main Methods:

    • * A randomized controlled trial involving 560 disease-free child contacts of 264 multibacillary leprosy cases in Madras city.

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  • * Participants received either three injections of acedapsone or placebo at 10-week intervals.
  • * Follow-up was conducted over 225 weeks to monitor leprosy incidence.

    • Main Results:

    • * A statistically significant reduction in leprosy incidence was observed in the acedapsone group (13 cases) compared to the placebo group (30 cases).
    • * Acedapsone prophylaxis demonstrated 56.7% protection against leprosy development.
    • * Efficacy was particularly noted in male children over 9 years and female children aged 1-8 years.

    Conclusions:

    • * Acedapsone chemoprophylaxis is effective in preventing leprosy among child contacts of multibacillary cases.
    • * The study suggests a significant protective effect, especially in specific age and gender groups.
    • * Further research is needed to assess the influence of other prognostic factors on prophylaxis effectiveness.