[Larval stages of the filaria Mansonella (Dipetalonema) perstans in a student from Africa].

Microfilariae were found in blood samples of a 32 year-old-student from Guinea-Bissau (Africa). Based on parasite morphology as well as some other features the microfilariae were identified as Mansonella perstans. The course of infection was asymptomatic (except for slight urticarial skin lesions). The microfilariae disappeared from peripheral blood after mebendazole treatment (200 mg daily for 1 month).