Question

Match the LIST-I with LIST-II. 
 \[ \begin{array}{|l|l|} \hline \textbf{LIST I (Pathogen)} & \textbf{LIST II (Detection methods)} \\ \hline A. \ \text{Legionella} & I. \ \text{Enzyme-linked immunosorbent assay (ELISA) or EIA for detection of P-24} \\ B. \ \text{HIV} & II. \ \text{Cartridge based nucleic acid amplification test (CBNAAT) Gene Xpert} \\ C. \ \text{Mycobacterium} & III. \ \text{Urinary antigen test} \\ D. \ \text{Salmonella typhi} & IV. \ \text{Widal test for antibody against both O and H antigens} \\ \hline \end{array} \]

• A. A - II, B - III, C - I, D - IV
• B. A - I, B - IV, C - III, D - II
• C. A - IV, B - III, C - II, D - I
• D. A - III, B - I, C - II, D - IV

Hint:

Legionella → Urinary antigen test, HIV → ELISA, Mycobacterium → CBNAAT, Salmonella → Widal test.

Answer 1

The Correct Option is D

Step 1: Legionella.
Legionella infection is commonly detected using the urinary antigen test. Hence A → III.
Step 2: HIV.
HIV can be diagnosed using ELISA or EIA which detects the P-24 antigen or antibodies. Hence B → I.
Step 3: Mycobacterium.
Mycobacterium tuberculosis is detected by CBNAAT (Cartridge Based Nucleic Acid Amplification Test) such as GeneXpert. Hence C → II.
Step 4: Salmonella typhi.
Salmonella typhi infection is diagnosed using the Widal test which detects O and H antibodies. Hence D → IV.
Step 5: Conclusion.
Therefore, the correct matching is A - III, B - I, C - II, D - IV.