Strongyloides stercoralis is a common enteric helminthic parasite “Thread worm” Parasite of man 38 Species found in dogs, cats and many other mammals 2 different life cycle forms Free-living Parasytic
The Definitive host of Stronglyloides Stercoralis is Humans S. Fulleboni infects Chimpanzees and Baboons Geographic Distribution Tropical and Subtropical Areas Cases also occur in temperate zones Most frequently found in rural areas, Insitutional settings and lower socioeconomic groups
Morphology Adult females measure 2-3 mm in length by 20 to 50 μm. Long cylindrical Esophagus which occupies 1/3 the length of the worm. Rhabditiod is (L-1 stage) 180 – 380 by μm. Rhabditoid larvae have a short buccal cavity, an attenuated tail and a prominent genital in its early stage. These features are used to differentiate S. stercoralis from Hookworm rhabditiod larvae.
Morphology Filariform larvae (L3, the infective stage) have a long non bulbous esophagus of about 2/5 of the lenght of the body. Filariform larvae are slender and have a notched tip of the tail. Filariform larvae measure µm in lenght by µm.
Rhabditiod Eosophagus
The intestinal mucosa during S.stercoralis hyperinfection: a bc d e
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Frequently is Asymptomatic GI Symptoms Abdominal Pain and Diarrhea Pulmonary symptoms can occur Dermatological symptoms Uticarial Rashes in Buttocks and waist area Immunocompromised patients Abdominal Pain, Distension, shock, pulmonary and neurological complications with septicemia and is potentially fatal.
Larvae in stool using concentration methods. Filter paper technique and wet mount preparation. larvae in duodenal fluid. Serial Samples. Antibody detection. Morphological comparison to other parasites.
Anthelmintics Ivermectine (200 micrograms/Kg in a single dose) Albendazole (25 mg/Kg twice a day for 2 days) Prevention Teaching sanitation Proper disposal of human waste
References oidiasis.htm Center for Disease Control and Prevention oidiasis.htm me.com/cond/C html me.com/cond/C html Strongyloides Stercoralis.