Abbreviated Name:
Number of people requiring interventions against neglected tropical diseases
Indicator Name:
Number of people requiring interventions against neglected tropical diseases
Domain:
Service coverage
Related Terms:
Neglected tropical disease
Definition:
Number of people requiring treatment and care for any one of the neglected tropical diseases (NTDs) targeted by the WHO NTD Roadmap and World Health Assembly resolutions and reported to WHO.
Treatment and care is broadly defined to allow for preventive, curative, surgical or rehabilitative treatment and care.
Other interventions (e.g. vector management, veterinary public health, water, sanitation and hygiene,
disease surveillance, morbidity management and disability prevention) are to be addressed in the context of targets and indicators for Universal Health Coverage (UHC) and universal access to water and sanitation.
Treatment and care is broadly defined to allow for preventive, curative, surgical or rehabilitative treatment and care.
Other interventions (e.g. vector management, veterinary public health, water, sanitation and hygiene,
disease surveillance, morbidity management and disability prevention) are to be addressed in the context of targets and indicators for Universal Health Coverage (UHC) and universal access to water and sanitation.
Measurment Method:
According to disease epidemiology and method of case detection and treatment, Number of reported cases for; Dranculosis, lesihmaniasis, mycetomma
Number of newly detected cases: Leprosy and rabies
Population number requiring mass treatment: flariasis, onchoriasis, schistomiasis, soil transmitted diseases and trachoma
Number of newly detected cases: Leprosy and rabies
Population number requiring mass treatment: flariasis, onchoriasis, schistomiasis, soil transmitted diseases and trachoma
Numerator:
Average annual number of people requiring preventive chemotherapy (PC) for at least one PC-NTD; and
Number of new cases requiring individual treatment and care for other NTDs.
Number of new cases requiring individual treatment and care for other NTDs.
Denominator
N/A
Estimation method:
Some estimation is required to aggregate data across interventions and diseases. There is an established methodology that has been tested and an agreed international standard.
1. Average annual number of people requiring PC for at least one PC-NTD: People may require PC for more than one PC-NTD. The number of people requiring PC is compared across the PC-NTDs, by age group and
implementation unit (e.g. district). The largest number of people requiring PC is retained for each age group in each implementation unit. The total is considered to be a conservative estimate of the number of people
requiring PC for at least one PC-NTD. Prevalence surveys (e.g. transmission assessment surveys) determine when an NTD has been eliminated or controlled and PC can be stopped or reduced in frequency, such that the
average annual number of people requiring PC is reduced.
2. Number of new cases requiring individual treatment and care for other NTDs: The number of new cases is based on country reports, whenever available, of new and known cases of Buruli ulcer, Chagas disease, cysticercosis, dengue, guinea-worm disease, echinococcosis, human African trypanosomiasis (HAT), leprosy, the leishmaniases,
rabies and yaws. Where the number of people requiring and requesting surgery for PCNTDs (e.g. trichiasis or hydrocele surgery) is reported, it can be added here. Similarly, new cases requiring and requesting rehabilitation
(e.g. leprosy or lymphoedema) can be added whenever available. Case reports may not be comparable over time; some further estimation may be required to adjust for changes in case-finding and reporting.
Populations referred to under 1) and 2) may overlap; the sum would overestimate the total number of people requiring treatment. The maximum of 1) or 2) is therefore retained at the lowest common
implementation unit and summed to get conservative country, regional and global aggregates. By 2030, improved co-endemicity data and models will validate the trends obtained using this simplified approach.
1. Average annual number of people requiring PC for at least one PC-NTD: People may require PC for more than one PC-NTD. The number of people requiring PC is compared across the PC-NTDs, by age group and
implementation unit (e.g. district). The largest number of people requiring PC is retained for each age group in each implementation unit. The total is considered to be a conservative estimate of the number of people
requiring PC for at least one PC-NTD. Prevalence surveys (e.g. transmission assessment surveys) determine when an NTD has been eliminated or controlled and PC can be stopped or reduced in frequency, such that the
average annual number of people requiring PC is reduced.
2. Number of new cases requiring individual treatment and care for other NTDs: The number of new cases is based on country reports, whenever available, of new and known cases of Buruli ulcer, Chagas disease, cysticercosis, dengue, guinea-worm disease, echinococcosis, human African trypanosomiasis (HAT), leprosy, the leishmaniases,
rabies and yaws. Where the number of people requiring and requesting surgery for PCNTDs (e.g. trichiasis or hydrocele surgery) is reported, it can be added here. Similarly, new cases requiring and requesting rehabilitation
(e.g. leprosy or lymphoedema) can be added whenever available. Case reports may not be comparable over time; some further estimation may be required to adjust for changes in case-finding and reporting.
Populations referred to under 1) and 2) may overlap; the sum would overestimate the total number of people requiring treatment. The maximum of 1) or 2) is therefore retained at the lowest common
implementation unit and summed to get conservative country, regional and global aggregates. By 2030, improved co-endemicity data and models will validate the trends obtained using this simplified approach.
Disaggregation:
Disaggregation by age is required for PC: pre-school-aged children (1-4 years), school-aged (5-14 years) and adults (= 15 years).
Primary data sources:
The number of people requiring treatment and care for NTDs is measured by existing country systems, and reported through joint request and reporting forms for donated medicines, the integrated NTD database, and other reports to WHO.
Alternate data sources:
Develop a standard protocol for systematic data collection for NTDs through World Health Survey Plus (WHS+)
Measurment frequency:
Annual
