Whilst Onchocerca volvulus, the human parasite that causes riverblindness, is commonly known, there is a large number of nun-human Onchocerca and other filarial species found in cattle, game animals and birds. Their infective larvae are encountered in bloodfeeding vectors and must be distinguished from the of human filarial species. Furthermore, some infective larvae of non-human species may occasionally develop in the human host and cause ‘zoonotic filariasis/onchocerciasis’

In the following, Onchocerca species of cattle and other filarial species found in Cameroon, shall be presented:


Filarial species found in Zebu cattle in Cameroon:

…. under construction….

Onchocerca ochengi

Onchocerca dukei

Onchocerca gutturosa

Onchocerca armillata

Setaria spec.

Dipetalonema spec.


Filarial species found in game animals:

Onchocerca ramachandrini BAIN WAHL & RENZ 1993 (warthog) – Simulium damnosum s.l.

Onchocerca hamoni (reedbok) – vector ??

Onchocerca ochengi (substrain?) (hartebeest) – vector Simulium damnosum s.l.

Robertdollfusidae (new species) – only mff found in Simulium damnosum s.l. (Bain, O. & A. Renz, 1993)

Filarial species found in birds: