[Strongyloides stercoralis (Bavay, 1876) Stiles et Hassall, 1902 (Nematoda)--intestinal roundworm. I. History].

The discovery of Strongyloides stercoralis, a parasite of human gastrointestinal system and lungs, was presented from the historical point of view. The sequence of achievements, in regard of explanation of the parasite's life cycle, determining its ways and invasion sites and discovering a different kind of autoinfection in strongyloidosis cycle, was described.