General Parasitology and Protozoa
A mother takes her 4 year old child to day care center. She has noticed that the child’s frequent stools are non-bloody, foul smelling and fatty. The child has no fever. A parasite infection is suspected. What attribute of this parasite imparts its pathogenicity?
|C||Ventral sucking disc|
a. This is the history of giardiasis.
b. The important part of the parasite responsible for clinical manifestation is ventral sucking disc by which the parasite attaches to the intestinal epithelium.
c. This parasite exists in two forms cyst and the trophozoite. The infective stage is the cyst.
d. Infection is acquired by feco-oral route. Infection occurs of the upper small intestine (duodenum and jejunum). The infection manifests as diarrhea, steatorrhea and malabsorption syndrome.
e. Diagnosis is established by stool examination for the cyst and the trophoziotes.