Evidence found
4 records across 4 countries and territories, 1953–1975.
Onchocerca volvulus · GBIF taxon key 7031770
Where has the Onchocerciasis been recorded?
Onchocerca volvulus occurrence evidence comes from 4 records in 4 countries and territories, from 1953 to 1975. Most records come from Ghana.
- 4 records
- 4 places
- 3 years recorded
- Chromadorea class
Observation evidence passport
Source coverage
CC0 GBIF Animalia occurrence facets, including country, month and year summaries.
Refreshed 2026-08-23. Inspect the taxon on GBIF.
What this means
The species has been recorded in the listed places in the stated source universe. Peak month: February.
2 months reach at least 10% of the peak facet count.
What this does not mean
historical describes the record pattern, not a formal range, residency, abundance or conservation assessment.
A single record remains evidence of a recording, not proof that a population lives there.
Compare this animal’s observation pattern
When it is recorded
JFMAMJJASOND
Peak month: February. Records cluster in the months an animal is present and being looked for, so a summer peak can reflect observer effort as much as the animal.
Where Onchocerciasis has been recorded
The countries below show where occurrence evidence exists for Onchocerciasis. They do not define a complete habitat range: survey effort differs by place, and historical or one-off records can appear alongside repeated presence.
| Place | Records | Share |
|---|---|---|
| Ghana | 1 | |
| Mozambique | 1 | |
| Sudan | 1 | |
| United States | 1 |
Record pattern: historical
Historical records with no recent record in the covered source. This is inferred from how many years and months the animal appears in, not from a range map — treat it as evidence, not a formal assessment.
Historical records with no recent record in the covered source. This is inferred from how many years and months the animal appears in, not from a range map — treat it as evidence, not a formal assessment.