Most people who are infected with Strongyloides do not know they are infected and have no symptoms. Others, particularly those who are on some immunosuppressive therapies, may develop a severe form and, if untreated, become critically ill and possibly die.
Above Images: Left: Adult free-living female S. stercoralis. Notice the row of eggs within the female’s body. Right: Filariform (L3) larva of S. stercoralis in an unstained wet mount. Credit: DPDx.