Lymphatic filariasis

Lymphatic filariasis: monitoring and epidemiological assessment of mass drug administration

A manual for national elimination programmes

WHO/Department of control of neglected tropical diseases


Effective monitoring, epidemiological assessment and evaluation are necessary to achieve the aim of interrupting LF transmission. This manual is designed to ensure that national elimination programmes have available the best information on methodologies and procedures for (i) monitoring MDA, (ii) appropriately assessing when infection has been reduced to levels where transmission is likely no longer sustainable, (iii) implementing adequate surveillance after MDA has ceased to determine whether recrudescence has occurred, and (iv) preparing for verification of the absence of transmission.

The first edition of this document was published in 2005. In 2010, the STAG-NTD recommended that WHO revise the 2005 document to provide clearer and more feasible methodologies to national programmes on monitoring, epidemiological assessment and evaluation in order to achieve the global target of eliminating LF by 2020. This revised document reflects better understanding of epidemiological aspects of the disease, further field experience, and operational research in monitoring and evaluation of activities to eliminate LF.

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