Question:
Which of the following immunological tests are not used for diagnosis of schistosomosis in living animals?
(A). Casoni's test
(B). TORCH test
(C). Cercarial hullen reaction
(D). Frenkel's test
Choose the correct answer from the options given below:
Which of the following immunological tests are not used for diagnosis of schistosomosis in living animals?
(A). Casoni's test
(B). TORCH test
(C). Cercarial hullen reaction
(D). Frenkel's test
Choose the correct answer from the options given below:
(A). Casoni's test
(B). TORCH test
(C). Cercarial hullen reaction
(D). Frenkel's test
Choose the correct answer from the options given below:
Show Hint
To easily answer this, identify the test that is associated with schistosomes: the Cercarial Hüllen Reaction (CHR).
Since (C) is definitely used for schistosomosis, any option containing (C) can be eliminated.
Since (C) is definitely used for schistosomosis, any option containing (C) can be eliminated.
Updated On: Jul 14, 2026
- (A), (B) and (D) only.
- (A), (C) and (D) only.
- (A), (B), (C) and (D).
- (B), (C) and (D) only.
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
This question requires identifying diagnostic immunological assays that are not used for the detection of Schistosoma (blood fluke) infections in living animals.
Detailed Explanation:
Let us evaluate each of the given immunological tests:
(C) Cercarial Hüllen Reaction (CHR): This is a specific immunological test used for the diagnosis of schistosomosis.
Live cercariae of Schistosoma are incubated with the serum of the suspected animal.
If antibodies are present, a swelling or envelope (Hülle) forms around the cercariae. This test is used for diagnosis.
(A) Casoni's test: This is an immediate hypersensitivity skin test used specifically for the diagnosis of Hydatid disease (Echinococcus granulosus). It is not used for schistosomosis.
(B) TORCH test: This is a panel of serological tests used in human medicine to screen pregnant women and newborns for specific congenital infections (Toxoplasmosis, Other infections, Rubella, Cytomegalovirus, and Herpes simplex). It has no diagnostic value for schistosomosis in veterinary medicine.
(D) Frenkel's test: This is an intradermal skin test used for the diagnosis of Toxoplasmosis, not schistosomosis.
Therefore, tests (A), (B), and (D) are not used for the diagnosis of schistosomosis.
Step 2: Final Answer:
The correct option is (A), indicating that Casoni's test, TORCH test, and Frenkel's test are not used for diagnosing schistosomosis.
This question requires identifying diagnostic immunological assays that are not used for the detection of Schistosoma (blood fluke) infections in living animals.
Detailed Explanation:
Let us evaluate each of the given immunological tests:
(C) Cercarial Hüllen Reaction (CHR): This is a specific immunological test used for the diagnosis of schistosomosis.
Live cercariae of Schistosoma are incubated with the serum of the suspected animal.
If antibodies are present, a swelling or envelope (Hülle) forms around the cercariae. This test is used for diagnosis.
(A) Casoni's test: This is an immediate hypersensitivity skin test used specifically for the diagnosis of Hydatid disease (Echinococcus granulosus). It is not used for schistosomosis.
(B) TORCH test: This is a panel of serological tests used in human medicine to screen pregnant women and newborns for specific congenital infections (Toxoplasmosis, Other infections, Rubella, Cytomegalovirus, and Herpes simplex). It has no diagnostic value for schistosomosis in veterinary medicine.
(D) Frenkel's test: This is an intradermal skin test used for the diagnosis of Toxoplasmosis, not schistosomosis.
Therefore, tests (A), (B), and (D) are not used for the diagnosis of schistosomosis.
Step 2: Final Answer:
The correct option is (A), indicating that Casoni's test, TORCH test, and Frenkel's test are not used for diagnosing schistosomosis.
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