TABLE 2.

Resistance of Y. pestis strains to PMB at various cultivation temperatures

Temp (°C)MIC of PMB for Y. pestis strain (U/ml)a
KM218KIMD1KM260(11)1146EV11M
531.3 ± 015.6 ± 031.3 ± 062.5 ± 031.3 ± 0
1031.3 ± 031.3 ± 031.3 ± 062.5 ± 031.3 ± 0
1531.3 ± 031.3 ± 031.3 ± 062.5 ± 031.3 ± 0
2031.3 ± 031.3 ± 0250 ± 0250 ± 031.3 ± 0
23250 ± 031.3 ± 0250 ± 0500 ± 031.3 ± 0
252,000 ± 02,000 ± 01,000 ± 0250 ± 031.3 ± 0
282,000 ± 01,000 ± 01,000 ± 0125 ± 031.3 ± 0
3062.5 ± 015.6 ± 01,000 ± 0125 ± 062.5 ± 0
3531.3 ± 015.6 ± 01,000 ± 031.3 ± 062.5 ± 0
3731.3 ± 015.6 ± 031.3 ± 031.3 ± 0250 ± 0
40No data1.9 ± 015.6 ± 0No data7.8 ± 0
  • a Standard deviations represent 95% confidence intervals; nonoverlapping 95% confidence interval standard deviations indicate a difference at a P value of <0.05. Boldface type indicates the highest levels of resistance to PMB.