Table 1.

ELISA was detected to anti-EsxA serum antibodies in patients with S. aureus infection.

Sample type	Total cases	Positive cases	Positive rate (%)	M	SD
Control	50	0	0	0.110	0.120
Test group	78	19	24.35	0.546	0.244

Negative values of the sample co (M+2SD) = 0.350, greater than 0.350 judged as positive.

M: The average OD ₄₅₀ value; SD: Standard deviation.