Available data from some onchocerciasis-endemic villages in the Mbam and Sanaga river valleys of Cameroon (baseline prevalence and history of CDTI in this area)1
| Site | Year | Ov16 (RDT)* seroprevalence (%)(95% CI)† (age group in years, sample size) | Ivermectin coverage (% of total population)‡ | Mean monthly biting rate (flies/person/month) | Epilepsy incidence in village§ |
| Bilomo¶ | 2017 | 46.9 (39.0–55.0) (7–10, n=145)15 | 64.115 | NA | 22715 |
| Nyamongo¶ | 2017 | 46.5 (37.1–56.2) (7–10, n=101)20 | 61.1**47 | 19 43121 | 18120 |
| Ngongol¶ | 2017 | 42.4 (32.4–53.0) (7–10, n=85)20 | 61.1**47 | NA | 15220 |
| Bayomen¶ | 2017 | 55.4 (46.1–64.2) (7–10, n=112)20 | 61.1**47 | 50 53121 | 7120 |
| Biatsotta¶ | 2017 | NA | 61.1**47 | 33 39022 | 5005 |
| Kelleng†† | 2018 | 52.0 (33.5–70.0) (7–10, n=25)15 | 69.215 | NA | 9815 |
| Nkongmessa††, ‡‡ | 2019 | 22.2 (12.5–36.3) (6–10, n=45)§§ | NA | NA | 22276 |
| Mong††, ‡‡ | 2019 | 62.8 (47.9–75.6) (6–10, n=43)§§ | NA | NA | NA¶¶ |
*Ov16 seroprevalence measured by rapid diagnostic test.
†95% CIs (Wilson score intervals).
‡Proportion treated over total population aged ≥5 years.
§Incidence per 100 000 person-years.
¶Mbam river valley.
**Overall ivermectin coverage in the Bafia Health District, Mbam valley (2014).
††Sanaga river valley.
‡‡Coendemic with loiasis.
§§Unpublished data.
¶¶Anecdotal reports of frequent epilepsy.
CDTI, community-directed treatment with ivermectin; NA, Not available.