In this open-labeled, randomized clinical trial, the Investigator will assess the safety and pharmacokinetics (PK) of model-optimized doses of rifampicin (RIF) with or without levofloxacin (LEVO) given to children as part of multidrug treatment for tuberculous meningitis (TBM) versus standard treatment. The Investigators will also assess functional and neurocognitive outcomes by treatment group, as measured by the Pediatric Modified Rankin Score (MRS) and the Mullen Scales of Early Learning (MSEL), respectively.