How to Respond When NTD Survey Results Show that More Mass Drug Administration (MDA) is Needed

To achieve lymphatic filariasis (LF) or trachoma elimination, the World Health Organization (WHO) recommends conducting several rounds of MDA, followed by disease-specific prevalence surveys. If a national program fails to meet criteria for stopping MDA, WHO encourages programs to investigate why prevalence persists above the elimination threshold and how to improve their next round(s) of MDA. Using lessons learned from a variety of countries when elimination thresholds were not attained, WHO and other partners have created tools to assist investigations.

This brief outlines ENVISION’s process for using these tools to investigate disease-specific survey outcomes when they do not meet the elimination threshold, to learn and adapt appropriately.