Parasitology

Enterobius vermicularis Eggs in Stool: Diagnosing Enterobiasis

A case of Enterobius vermicularis pinworm eggs found in a child's stool despite a negative perianal swab. Features of laboratory diagnosis.

Enterobius vermicularis eggs in stool, up to 10 per field of view. Magnification 400x, 100x. Child, 5 years old. Perianal fold imprint on the same day – negative 🤔 Is this possible?

🙏Images and question kindly provided by biologist Natalia Morkhova