Evaluation of Four Stool Processing Methods Combined With Xpert MTB/RIF Ultra for Diagnosis of Intrathoracic Paediatric TB (TB-Speed - Stool Processing)

"The Xpert MTB/Rif Ultra will be performed on stool samples processed using four different processing methods:~* Standard sucrose flotation method~* Optimized sucrose flotation~* Stool processing kit (SPK)~* Simple One-step method (SOS)"

The Xpert MTB/Rif Ultra will be performed on gastric aspirate or expectorated sputum