Skip directly to search Skip directly to A to Z list Skip directly to navigation Skip directly to page options Skip directly to site content


Description:Magnified 500X, this photomicrograph of an unstained, formalin-preserved stool specimen mount, revealed the presence of a Trichuris vulpis nematode egg. T. vulpis is a “whipworm” that is common to dogs.

Adult worms are 30 – 50nm in length, and as parasites, reside in the ceceum, a region of the large intestine where it is joined by the small intestine or ileum. This specie of whipworm, though common to canines, has been found in the human digestive tract.
The eggs of the canine whipworm T. vulpis, closely resemble those of the human whipworm T. trichiura, however, the T. vulpis ova are nearly twice that of its relative T. trichiura. Canine infection is diagnosed through a fecal examination, and the discovery of the ova, as was the case here.

High Resolution: Click here for hi-resolution image (6.67 MB)
Content Providers(s):CDC/ Dr. Mae Melvin
Creation Date:1973
Photo Credit:
Links:CDC – Div. of Parasitic Diseases, DPDx; Trichuriasis
CDC Organization
Skip Navigation Links.

Skip Navigation Links.
Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.