Strongyloides stercoralis

S. stercoralis infection is diagnosed by the presence in faeces of first-stage rhabditoid larvae. They measure 180-380 by 14-20 µm. Baermann concentration technique is the method of choice for the detection of the parasite. Rhabditoid larvae have a short buccal cavity, an attenuated tail and a prominent genital primordium. On the basis of these morphologic features, they can be differentiated from hookworm rhabditoid larvae. Rhabditoid larva in faeces: wet mount preparation.