Page 40 - MNU-PM503 Parasitology practical book

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

- Clinical diagnosis :the clinical manifestations and history of contact with dogs may

.
be suggestive of hydatidosis

:
- Laboratory diagnosis

:
A) Direct

-Demonstration of acid-fast scolices (red) in the urine or sputum after staining with

Ziehl-Neelsen stain.

-Radio-diagnosis :Plain X-ray

.
-Blood examination for eosinophilia

B) Indirect :

1) Intra-dermal allergic test (Casoni test):
Intra-dermal injection of 0.2 ml of sterile hydatid fluid in one forearm
.

-Normal saline (0.2 ml) is injected intra-dermally in the other forearm as a control .

-In positive cases, an erythematous wheal is formed within 20 minutes .

-A delayed reaction may appears after 24 hours

.

2) Serological tests :using hydatid fluid antigen to detect circulating antibodies.

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