World Health Organization · Health
Number of individuals in the country requiring preventive chemotherapy for onchocerciasis
Number of individuals in the country requiring preventive chemotherapy for onchocerciasis. WHO Global Health Observatory indicator NTD_ONCHEMO.
- Coverage
- 31 of 251 countries
- Latest data
- 2025
- Series
- 31
- Unit
- count
- Licence
- CC BY-NC-SA 3.0 IGO
- Retrieved
- 2026-11-07
- Indicator
- who-ntd-onchemo
- Interva ID
- who-ntd-onchemo
Recency
current
data to 2025; catalog to 2025
Provenance
1 step
as the publisher declares it
Versions
1
catalog snapshots
Citation
BibTeX + CSL
versioned permalink
Quality profile
This profile describes what Interva can measure in the data. It does not claim the dataset is accurate, complete, or suitable for a particular use.
Recency
100%Latest observation is 2025; the catalog broadly reports to 2025, so this data is 0 year(s) behind (current).
Method: Compares the dataset's latest non-projected period with the year most datasets in the catalog end in. Up to 2 years behind is current — annual data is routinely published a year or two late — and more than 5 is stale. Measured from the data, not from when Interva last crawled it.
Temporal completeness
100%1 of 31 series skip at least one year inside their own span; the median series reports 100% of its years.
Method: Per series, years present divided by years from its first to its last observation; the median across series is reported. Annual periods are assumed, which holds for every series in the catalog today.
Geographic coverage
MeasuredCovers 31 of the 251 countries in the catalog.
Method: Counts distinct geographies with at least one observation. Not scored: a regional dataset covering its region completely is not deficient for omitting the rest of the world.
History depth
MeasuredThe median series has 13 observations; the earliest begins in 2013.
Method: Counts non-projected observations per series. Not scored: a long history is useful for trend work and irrelevant for a cross-section.
Revisions
MeasuredNo observation has been restated in any vintage Interva has recorded.
Method: Counts values the publisher changed between Interva's publishes. Not scored: revising estimates is ordinary and often a sign of care, and the count is here so a reader citing a figure knows whether it moves.
Schema conformity
Not assessedNo declared schema or validation rules are attached to this dataset yet.
Validity
Not assessedNo field-level validation rules are attached to this dataset yet.
Consistency
Not assessedCross-series consistency rules are not defined yet. The obvious first one — whether two publishers measuring one concept agree within a stated tolerance — is a candidate.
2 scored from the data, 3 described without a score, 3 not assessed. Pipeline integrity: all 5 checks pass. Assessed 2026-11-08.
By country
Number of individuals in the country requiring preventive chemotherapy for onchocerciasis for each of the 31 countries it covers, with the full history.
- Angola 2013–2025
- Benin 2013–2025
- Brazil 2013–2025
- Burkina Faso 2013–2025
- Burundi 2013–2025
- Cameroon 2013–2025
- Central African Republic 2013–2025
- Chad 2013–2025
- Congo 2013–2025
- Congo, The Democratic Republic of the 2013–2025
- Côte d'Ivoire 2013–2025
- Equatorial Guinea 2013–2020
- Ethiopia 2013–2025
- Gabon 2013–2025
- Ghana 2013–2025
- Guinea 2013–2025
- Guinea-Bissau 2013–2025
- Liberia 2013–2025
- Malawi 2013–2025
- Mali 2013–2025
- Mozambique 2013–2025
- Nigeria 2013–2025
- Senegal 2013–2022
- Sierra Leone 2013–2025
- South Sudan 2013–2025
- Sudan 2013–2025
- Tanzania, United Republic of 2013–2025
- Togo 2013–2025
- Uganda 2013–2025
- Venezuela, Bolivarian Republic of 2013–2025
- Yemen 2013–2025
Latest observations
| Country | Period | Value | Unit |
|---|---|---|---|
| Angola | 2025 | 7.21M | count |
| Benin | 2025 | 6.77M | count |
| Brazil | 2025 | 17,089 | count |
| Burkina Faso | 2025 | 352,587 | count |
| Burundi | 2025 | 2.43M | count |
| Cameroon | 2025 | 11.46M | count |
| Central African Republic | 2025 | 3.89M | count |
| Chad | 2025 | 6.81M | count |
| Congo | 2025 | 860,914 | count |
| Congo, The Democratic Republic of the | 2025 | 61.71M | count |
Provenance
Who produced these figures, as World Health Organization declares it — not inferred, and each line says which published field it was read from.
Produced by
World Health Organization
Global Health Observatory — NTD_ONCHEMO
declared by who in IndicatorCode
Versions
A vintage is a dated publish of the catalog. The current entry is a catalog snapshot; checksums are not recorded yet and are shown as such.
- CurrentCurrent catalog snapshotchecksum not recorded
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Citation
Version: catalog snapshot 2026-11-07. The record labels this as a catalog snapshot because immutable dataset releases are not stored yet.
World Health Organization (2026). Number of individuals in the country requiring preventive chemotherapy for onchocerciasis. Interva. https://interva.co/dataset/who-ntd-onchemo (accessed 2026-11-08). catalog snapshot 2026-11-07.
@misc{interva-who-ntd-onchemo,
title = {Number of individuals in the country requiring preventive chemotherapy for onchocerciasis},
author = {World Health Organization},
year = {2026},
howpublished = {\url{https://interva.co/dataset/who-ntd-onchemo}},
note = {Interva dataset who-ntd-onchemo; catalog snapshot 2026-11-07},
urldate = {2026-11-08}
}DOI: not assigned (not assigned). The permalink is versioned by catalog snapshot; a stable dataset DOI is a later step.
API access
Every fact on this page is available from the API.
curl https://interva-api.nq5kq4f69b5zj.eu-west-3.cs.amazonlightsail.com/datasets/who-ntd-onchemocurl -o who-ntd-onchemo.csv https://interva-api.nq5kq4f69b5zj.eu-west-3.cs.amazonlightsail.com/datasets/who-ntd-onchemo/downloadcurl "https://interva-api.nq5kq4f69b5zj.eu-west-3.cs.amazonlightsail.com/datasets/who-ntd-onchemo/citation?accessed=YYYY-MM-DD"curl https://interva-api.nq5kq4f69b5zj.eu-west-3.cs.amazonlightsail.com/datasets/who-ntd-onchemo/qualityFull schema: https://interva-api.nq5kq4f69b5zj.eu-west-3.cs.amazonlightsail.com/docs
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