Abstract
In July 2023, the World Health Organization (WHO) began recommending targeted next-generation sequencing (tNGS), due to its ability to detect resistance to many drugs with a single test. In March 2023, South Africa further adopted the GeneXpert XDR cartridge, which detects mutations associated with resistance to second-line injectable drugs. Here, we consider the feasibility for implementing tNGS in South Africa, what such a facility might look like and the specific context of this upper-middle-income country. Whilst the WHO now recommends tNGS for TB diagnostics and DST, there are many economic and infrastructural challenges opposing its deployment. In lieu of this, we instead recommend a stratified diagnostic pipeline that utilizes South Africa's existing GeneXpert technologies, attempting to reduce the costs associated with implementation of tNGS.
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