Page 48 - MNU-PM503 Parasitology practical book

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

4- Ancylostoma duodenale (hookworm)

Adult:

Adults are about 12 mm in length with the males
smaller than females.

Egg:

a- Size: 60 X40 u.
b- Shape: Oval with blunt poles. Thin shell.

c- Colour: translucent.
d- Contents: immature ovum (4- cell stage).
(empty narrow space between shell and

contents)

Definitive host - Pigs, rodents and man.

Reservoir host - No reservoir host

Infective stage - Infective filariform larva

Mode of infection 1- Man is infected when the infective filariform larva
in the top layer of soil penetrates his intact skin

2- Ancylostoma infections may be also oral,
transmammary or transplacental.
Diagnostic stage - Eggs.

Site of localization - Adults live in the small intestine of man

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