strongyloides stercoralis or threadworm

strongyloides stercoralis threadworm enterobius pinworms strongyloidiasis strongyloidiosis larva cestode worm diarrhea nematode nematoda protozoa parasite parasitic micro organism disease research analyzing test microbiology exam laboratory medical helminthes helminthology roundworm feces fecal stool microscope microscopy diagnosis ivermectin thiabendazole albendazone infection living rhabditiform filariform form stage fluke health care