Intestinal Nematodescontinued Clinical Microbiology Review 246
NEMATODE ROUTE OF INFECTION DIAGNOSTIC STAGE OTHER
Enterobius vermicularis Pinworm. Common in U.S. Common in
children. Resistant eggs in home can
infect other family members. Itching
when adult female migrates out of
anus at night to deposit eggs. Diagnose
by pinworm paddle or cellophane
tape prep.
Ingestion of infective egg. Ovoid ovum. 50 × 20 μm. 1 side
flattened. Colorless. Larva inside.
(From Leventhal R, Cheadle RF. Medical Parasitology:
A Self-Instructional Text, 5th ed. Philadelphia: FA Davis;
2002:15.)
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