Which of the following is NOT a second-line injectable agent used for MDR-TB?

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Multiple Choice

Which of the following is NOT a second-line injectable agent used for MDR-TB?

Explanation:
Second-line injectable agents are the injectable antibiotics used in MDR-TB regimens when strains are resistant to isoniazid and rifampicin. These include drugs like streptomycin, kanamycin, and capreomycin, which are given by injection and have been developed specifically for resistant TB. Ethambutol, on the other hand, is a first-line oral drug that is typically used in standard TB treatment and is not classified as an injectable second-line agent. Because it is not an injectable drug and is primarily used in initial, susceptible TB regimens, it does not belong to the second-line injectable group.

Second-line injectable agents are the injectable antibiotics used in MDR-TB regimens when strains are resistant to isoniazid and rifampicin. These include drugs like streptomycin, kanamycin, and capreomycin, which are given by injection and have been developed specifically for resistant TB. Ethambutol, on the other hand, is a first-line oral drug that is typically used in standard TB treatment and is not classified as an injectable second-line agent. Because it is not an injectable drug and is primarily used in initial, susceptible TB regimens, it does not belong to the second-line injectable group.

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