Fig. 2

Sensitivity test results: The EA-probe qPCR method was used to detect genomic DNA from SS serotype 2 at the following diluted concentrations: (a) 1.84 × 104 CFU, (b) 1.84 × 103 CFU, (c) 1.84 × 102 CFU, (d) 1.84 × 101 CFU, (e) 1.84 × 100 CFU, (f) 1.84 × 10− 1 CFU, (g) 1.84 × 10− 2 CFU, (h) 1.84 × 10− 3 CFU, (i), (j) and (k) Negative control