CXCL8 and bacterial infectious disease with sepsis: As SAcfDNA was not well correlated with IL-8 and CCL2, which is prognostic for all-cause mortality, nor with IL-17A, a cytokine prognostic for persistent bacteremia [20], we investigated whether combining SAcfDNA with these specific serum cytokines in logistic regression models would improve their prognostic power for all-cause mortality or persistent S. aureus bacteremia.