Task Force on definitions, criteria and indicators for interruption of transmission and elimination of leprosy Report of the final meeting Chengalpattu, India, 24-26 March 2021 1 Task Force on definitions, criteria and indicators for interruption of transmission and elimination of leprosy: Report of the final meeting Document no.: SEA/GLP/6 © World Health Organization 2021 Some rights reserved. This work is available under the Creative Commons Attribution-NonCommercial- ShareAlike 3.0 IGO licence (CC BY-NC-SA 3.0 IGO; https://creativecommons.org/licenses/by-nc-sa/3.0/igo). Under the terms of this licence, you may copy, redistribute and adapt the work for non-commercial purposes, provided the work is appropriately cited, as indicated below. In any use of this work, there should be no suggestion that WHO endorses any specific organization, products or services. The use of the WHO logo is not permitted. 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Introduction .............................................................................................................................................. 6 2. Inaugural session .................................................................................................................................... 6 2.1. Welcome remarks by WHO .................................................................................................... 6 2.2. Inaugural address by Government of India ............................................................................ 7 2.3. Objectives and expected outcomes of the meeting ............................................................... 7 3. Task force on definitions, criteria and indicators for transmission and elimination of leprosy .................................................................................................................................................... 8 3.1. Informal Consultation on defining criteria to declare elimination of leprosy: Conclusions and recommendations............................................................................................................ 8 3.2. Overview and processes of TFCEL .......................................................................................... 9 4. Concepts, definitions and indicators for interruption of transmission and elimination of disease .......................................................................................................................... 11 4.1. Migration in leprosy.............................................................................................................. 11 4.2. Framework of control, elimination and eradication of NTDs and other factors in transmission of leprosy ......................................................................................................... 11 4.3. Validation and verification: lessons learnt in the WHO South-East Asia Region ................. 13 4.4. Definitions, concepts and indicators for interruption of transmission ................................ 13 5. Phases on the pathway to elimination of leprosy ...................................................................... 18 5.1. Criteria, action points and facilities, interventions and activities ........................................ 19 5.2. Phase 2: till interruption of transmission ............................................................................. 24 5.3. Phase 3: till elimination of disease ....................................................................................... 26 5.4. Phase 4: post-elimination phase .......................................................................................... 29 6. Application of cut-off levels and analysis: examples from countries ................................. 30 6.1. Analysis of data from Brazil (by municipality) ...................................................................... 30 6.2. Application of data on two endemic districts in Tamil Nadu, India ..................................... 33 6.3. Application of indicators in low-burden countries ............................................................... 35 6.4. Learning from tuberculosis: Monitoring progress towards a TB-free India ......................... 39 7. Leprosy Transmission Assessment Survey .................................................................................. 40 4 8. Dossier template for interruption of transmission and elimination of leprosy disease ....................................................................................................................................................... 42 8.1. Country Dossier: contents, inputs from other health programmes ..................................... 42 8.2. Background information ....................................................................................................... 42 8.3. Mandatory information about leprosy control .................................................................... 43 9. Conclusions and recommendations ................................................................................................ 44 Annexes Annex 1: Programme ............................................................................................................................ 48 Annex 2: List of participants ................................................................................................................. 50 Annex 3: TFCEL members...................................................................................................................... 53 Annex 4: Maldives leprosy data ............................................................................................................ 55 Annex 5: Morocco leprosy data ............................................................................................................ 63 Annex 6: Thailand leprosy data ............................................................................................................. 67 Annex 7: Viet Nam leprosy data ........................................................................................................... 71 5 1. Introduction Addressing the leprosy burden is passing through different stages in different countries. Most countries have eliminated leprosy as a public health problem; several have already achieved interruption of transmission, while others are progressing to this. Some other countries have already eliminated the disease, i.e. they were formerly endemic. Encouraged by having achieved the milestone of elimination as a public health problem, countries would like to move to next phases: interruption of transmission and absence of disease. Annual leprosy