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Protozoan Infections

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Questions and Answers

What is the primary mode of transmission of Entamoeba histolytica?

Airborne transmission
Feces-contaminated food and water (correct)
Vector-borne transmission
Direct contact with an infected animal

What is the characteristic of the trophozoite stage of Entamoeba histolytica?

Mobile and flagellated stage
Quiescent and non-infective stage
Active and feeding stage (correct)
Dormant and infective stage

What is the primary diagnosis method for Entamoeba histolytica infection in the intestinal stage?

ELISA test
Polymerase Chain Reaction (PCR)
Stool culture
Direct Fecal Smear (DFS) for trophozoites (correct)

What is the characteristic of the cyst stage of Entamoeba histolytica?

Dormant and infective stage (A) Signup and view all the answers

What is the treatment of choice for Entamoeba histolytica infection?

Metronidazole (B) Signup and view all the answers

What is the characteristic of Entamoeba dispar?

Commensal and does not cause disease in humans (A) Signup and view all the answers

What is the primary method of diagnosis for Acanthamoeba keratitis?

Epithelial biopsy or corneal scrapings (B) Signup and view all the answers

Which of the following is a characteristic of Acanthamoeba sp. trophozoites?

Thorn-like appendages (A) Signup and view all the answers

What is the primary mode of transmission for Acanthamoeba sp.?

Contaminated water or soil (B) Signup and view all the answers

What is the treatment for Acanthamoeba keratitis?

Surgical excision of infected cornea with corneal transplantation (D) Signup and view all the answers

Which of the following is a prevention and control method for Acanthamoeba sp.?

Meticulous contact lens hygiene (D) Signup and view all the answers

What is the name of the disease caused by Acanthamoeba sp. in the nasal passages?

Granulomatous amebic encephalitis (C) Signup and view all the answers

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