The most effective methods of birth control are sterilization by means of vasectomy in males and tubal ligation in females, intrauterine devices (IUDs) and implantable contraceptives. This is followed by a number of hormonal contraceptives including oral pills, patches, vaginal rings, and injections.
Strongyloides StronÂ·gyÂ·loiÂ·des (strÅn'jÉ-loi'dÄz) n. A genus of small nematode intestinal parasites that includes the species that causes strongyloidiasis in humans.
Strongyloidiasis is an intestinal infection caused by 2 species of the parasitic nematode Strongyloides. The most common and clinically important pathogenic species in humans is S stercoralis (see the following image). S fuelleborni is found sporadically in Africa and Papua New Guinea.he life cycle of Strongyloides stercoralis is complex and unique among the intestinal nematodes. This worm has 2 types of life cyclesâa free-living life cycle (rhabditiform larvae) and a parasitic life cycle (filariform infective larvae)âwith 3 developmental stages: adult, rhabditiform larva, and filariform larva.