OT is diagnosed clinically by identification of clinical signs on ophthalmologic examination. Serological tests, such as enzyme-linked immunosorbent assay (ELISA) for detection of serum antibody against the Toxocara larvae, can confirm the diagnosis. 29 июл. 2014 г.
How do you test for toxocariasis?
A blood test is available that looks for evidence of infection with Toxocara larvae. In addition to the blood test, diagnosis of toxocariasis includes identifying the presence of typical clinical signs of VT or OT and a compatible exposure history.
How do people get ocular toxocariasis?
Humans acquire the disease by ingestion of embryonated eggs, usually from contaminated raw vegetables or infected raw meat (chicken, rabbit and lamb),2 contaminated water sources or via geophagia. Most ocular damage results from the inflammatory response that occurs following death of the larva.
How common is ocular toxocariasis?
Ocular toxocariasis is a rare infection caused by roundworms, Toxocara canis and Toxocara cati. It was first recognized to be associated with dogs in the 1940s. It typically affects children and can lead to profound monocular loss of vision despite known medical and surgical therapies.
How long do symptoms of toxocariasis take to show?
This migration of larvae causes the symptoms people experience. After eating eggs, it takes at least one week for symptoms to appear, but it may be weeks or months. Toxocariasis is not transmitted from person to person.
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