Table 2 Evaluation of the Enterobacterial Repetitive Intergenic Consensus (ERIC) primers for typing 38 unrelated strains of E. coli isolated from different sources
ERIC primer | Number of clusters | Number of ERIC type | Discriminatory power | Typeability (%): |
|---|---|---|---|---|
\(D=1-\frac{1}{N(N-1)}\sum _{j=1}^{S}{n}_{j}({n}_{j}-1)\) | \(T=N_t/N\) | |||
ERIC1R | 8 | 26 | 0.976 | 100 |
ERIC2 | 7 | 24 | 0.965 | 100 |
ERIC1R + ERIC2 | 6 | 16 | 0.903 | 84 |