Atlas of livestock parasites
digitized collection of microscopical preparations

Atlas of Parasites Contents Information sources Glossary Administration

Strongyloides westeri



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Threadworm (Strongyloides westeri) is

found in the small intestine of foals, usually less

than six months of age. The parasite is transmistted

either when suckling or by skin penetration from

larvae living in the bedding. Foals can become

infected during the first day of life and begin

shedding eggs in the feces as early as six to ten days

later. Young animals with unexplained diarrhea are

often found to be infected with this parasite.

Infections can be severe enough to require

treatment, after which recovery will be rapid as the

animals develop immunity against this parasite.


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