Key types of MDA treatment coverage, their definition and specific preventable chemotherapy neglected tropical disease coverage threshold targets
| Type of coverage | Definition | Target |
| Geographical coverage | No of endemic implementation units where PC is implemented/no of endemic implementation units where PC is required | 100% for all diseases |
| National coverage | No of individuals ingesting PC medicines in an endemic country/population living in all implementation units where PC is required | ≥65% for LF |
| ≥65% for control of OV, ≥80% for elimination of OV | ||
| ≥75% of school-age children (SAC) for SCH | ||
| ≥75% for STH | ||
| ≥80% for trachoma | ||
| Epidemiological coverage | No of individuals ingesting PC medicines at implementation unit level/population living in an implementation unit where PC is implemented | ≥65% of total population for LF |
| ≥65% of total population for control of OV, ≥80% of total population for elimination of OV | ||
| ≥75% of SAC for SCH | ||
| ≥75% of pre-SAC and SAC for STH | ||
| ≥80% of total population for trachoma | ||
| Programme coverage | No of individuals ingesting the PC medicines/eligible population targeted for treatment in implementation unit where PC is implemented | ≥75% of eligible population targeted for SCH, STH or ≥80% of eligible population targeted for LF, OV, trachoma |
| Surveyed coverage | No of surveyed individuals ingesting PC medicines at implementation unit level/population surveyed | see above for disease-specific targets |
LF, lymphatic filariasis; MDA, mass drug administration; OV, onchocerciasis; PC, preventable chemotherapy; SCH, schistosomiasis; STH, soil-transmitted helminths.