General Parasitology and Protozoa
In Giardia lamblia infection: (DNB Dec 2009)
|A||Infection is by ingestion of cyst|
|B||Resides in ileum|
|C||Has no trophozoite phase|
|D||All are true|
a. The disease causing agent of giardiasis is the enteric protozoan flagellate parasite Giardia lamblia (Grand old man of the intestine; following leave motility).
b. There are multiple modes of transmission, including person-to-person, water-borne, and venereal. Small aquatic or semi-aquatic wild mammals, such as beavers, muskrats, and small rodents harbor water-born cysts of Giardia and serve as important reservoir hosts.
c. Giardia lamblia resides in duodenum and jejunum.
d. It has both cyst and trophozoite stage. The infective form is the quadrinucleate cyst.
e. Treatment of giardiasis is Metronidazole-250 mg TDS for 5 days.