Background: Early detection of latent tuberculosis infection (LTBI) is critical to TB elimination in the current WHO vision of .

Methods: We investigated whether detecting plasma cytokines could aid in diagnosing LTBI across household contacts (HHCs) positive for IGRA, HHCs negative for IGRA, and healthy controls. We also measured the plasma cytokines using a commercial assay.

Results: Increased plasma CXCL8 and decreased MCP-1, TNF-α, and IFN-γ were associated with LTBI. Regression analysis showed that a combination of CXCL8 and MCP-1 increased the risk of LTBI among HHCs to 14-fold.

Conclusions: We postulated that CXCL8 and MCP-1 could be the surrogate biomarkers of LTBI, especially in resource-limited settings.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10441491PMC
http://dx.doi.org/10.1101/2023.08.07.23293767DOI Listing

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