 A study examining the epidemiology of "Loa loa", "Onchocerca volvulus", and "M. perstans" in the rain forest villages of Cameroon found a high prevalence of coinfection with "O. voluvulus" and "M. perstans".It also found a low prevalence of "L. loa" and "O. voluvulus" coinfection, as well as low prevalence of "L. loa" and "M. perstans" coinfection.Coinfection also has significant implications for treatment, because efficacious drugs for "M. perstans" are different from those for most filarial infections.