Aggregate health indicators often mask regional disparities. Discuss with reference to India's leprosy programme.

India met the WHO threshold for "elimination as a public health problem" (prevalence below 1 per 10,000) at the national level long ago. Its prevalence rate (PR) was 0.56/10,000 in March 2026 [1]. Yet that one figure hides pockets where leprosy is still spreading. This makes the programme a clear case of an average masking inequality.

How the national average hides gaps

• Inter-state: Chhattisgarh (1.66), Jharkhand (1.51) and Odisha (1.25) are well above the threshold. These are mostly tribal and remote areas [1].
• District level: 114 districts are still above 1/10,000 [1]. In 2020, 118 districts were classed as high-endemic [4], so the hard core has barely shrunk.
• Urban blind spot: Grade-2 disability (G2D, visible deformity at diagnosis) was 13.54/million in Chandigarh and 11.53 in Delhi, against 1.34 nationally [1].
• Hidden transmission: new child cases were 91.6% above projection. Only 148 of a projected 300 districts have provisionally interrupted transmission [1]. A district counts as interrupted only after five years with zero new child cases [2].
• Stagnation: the national PR was 0.57 in 2020 [4], so it has barely moved in six years.

Why the disparities persist

• Metric illusion: the ministry itself lists the "misinterpretation on elimination" among its challenges [4]. People read elimination as "disease gone", and vigilance slackened.
• Episodic search: the twice-yearly Leprosy Case Detection Campaign (LCDC) found 27,428 hidden cases in 2024-25 alone [3].
• Weak links: the programme flags contact tracing, laboratory services, staff capacity and migrants dropping out of Multi-Drug Therapy as problems [4].
• Stigma: people delay seeking care, so the National Strategic Plan (NSP) 2023-27 makes "zero stigma" a core pillar [2].

Way forward

• Change the metrics: rank districts by child cases and G2D rate, not by PR.
• Target the gaps: focus resources on the tribal belt. Use National Urban Health Mission (NUHM) screening in slums [4].
• Break the chain: give Single-Dose Rifampicin to every contact and report cases in real time on Nikusth 2.0 [2].
• Converge: add leprosy checks to RBSK school screening and Ayushman Bharat adult screening [4].

Leprosy shows that a national "success" figure can hide district, tribal and urban-migrant shortfalls. If India measures and acts at the district level, it can still turn the NSP's goal of zero transmission by 2027 [2] into reality. That would advance SDG 3.3 and the constitutional promise of equal dignity and health for its most marginalised citizens.