strongyloides

{{Short description|Genus of roundworms}}

{{Italic title}}

{{Automatic taxobox

| name = Threadworm

| image = Strongyloides stercoralis larva.jpg

| image_caption = First stage larva (L1) of S. stercoralis

| taxon = Strongyloides

| subdivision_ranks = Species

| subdivision =

}}

Strongyloides (from Greek strongylos, round, + eidos, resemblance), anguillula, or threadworm is a genus of small nematode parasites, belonging to the family Strongylidae, commonly found in the small intestine of mammals (particularly ruminants), that are characterized by an unusual lifecycle that involves one or several generations of free-living adult worms.

Human infection, strongyloidiasis, is caused by

  • Strongyloides stercoralis, widespread in all tropical regions
  • Strongyloides fuelleborni, a parasite of primates in African and Asian tropics and of humans in African tropics and New Guinea
  • Strongyloides papillosus, found in cattle, pigs, sheep, goats, rabbits, and rats
  • Strongyloides ransomi, found in pigs{{cite web|url=http://www.thepigsite.com/pighealth/article/422/thread-worm-strongyloides-ransomi/|title=Thread worm (Strongyloides ransomi) - Managing Pig Health and Treating Pig Dieases on ThePigSite.com|website=The Pig Site|access-date=2018-02-03|archive-url=https://web.archive.org/web/20180203235813/http://www.thepigsite.com/pighealth/article/422/thread-worm-strongyloides-ransomi/|archive-date=2018-02-03|url-status=dead}}
  • Strongyloides ratti, found in rats
  • Strongyloides myopotami, found in coypu (nutria), causes dermatitis similar to strongyloidiasis.{{cite journal|date=2 February 2019|title=Strongyloidiasis: Background, Pathophysiology, Etiology|url=https://emedicine.medscape.com/article/229312-overview|via=eMedicine}} The condition is also called nutria itch.{{cite journal|author1=Bonilla, Hector F. MD|author2=Blanchard, Diane H. MD|author3=Sanders, Richard MD|date=June 2000|title=Nutria Itch|url=https://jamanetwork.com/journals/jamadermatology/article-abstract/190274|journal=Archives of Dermatology|location=Vol. 136, No. 6|publisher=JAMA Dermatology|volume=136|issue=6|pages=804–805|doi=10.1001/archderm.136.6.804-a|pmid=10871960}}

Treatment for strongyloides infection is ivermectin or thiabendazole.{{Cite book|title=Cat Owner's Home Veterinary Handbook|last=Eldredge|first=Debra M.|last2=Carlson|first2=Delbert G.|last3=Carlson|first3=Liisa D.|last4=Giffin|first4=James M.|year=2008|pages=66}}

File:Parasite140080-fig3 Gastrointestinal parasites in seven primates of the Taï National Park - Helminths Figure 3g.jpg

References