Pediatrics Mycobacterium tuberculosis is said to be Multi – drug resistant if it is resistant to: A Isoniazid alone B Rifampicin Alone C Both Isoniazid and Rifampicin D Isoniazid, Rifampicin, Ethambutol 💡 Explanation Mycobacterium tuberculosis is said to be Multi - drug resistant if it is resistant to: ✓ Correct Answer: C. Both Isoniazid and Rifampicin