Page 44 - MNU-PM503 Parasitology practical book

Pharm D- Clinical Pharmacy Program Third Level Parasitology and virology (PM503)

Diagnostic stage - Eggs

Site of localization - The adult worms live free in the small intestine

(jejunum).

Stages in the life cycle: egg in the soil → larvated egg (with 2nd stage rhabditiform
larva) ,→ ingested by man →larva →adult in the small intestine .

Diagnosis

❖ Clinical: Symptoms of intestinal ascariasis are indistinguishable from those of
other intestinal helminthic infections.

❖ Laboratory
1. Detection of eggs in stool. (Direct smear, after concentration, Stoll’s

technique).

2. Detection of migrating larvae in sputum or better in gastric lavage

contents.

3. Detection of adults passing out with or without stool or in vomitus.

4. Eosinophilia (7 – 12%).

5. Radiology.

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