Table 3. Ratio of the DNA genomic determined by qPCR between the strains non-W-Beijing in relation to W-Beijing before and after competition.

	Profile of susceptibility	Genotype	Strain	Inoculum Ratio	7H9		7H9 + Tween
					Competition ratio	Alone growth ratio	Competition ratio	Alone growth ratio
Test 5	MDR	Non-W-Beijing	03-0850	6.4	14.2	3.2	2.5	0.4
	MDR	W-Beijing	03-0265
Test 6	S	Non-W-Beijing	01-2522	2.1	1.7	6.7	0.01	0.002
	S	W-Beijing	02-2761
Test 7	S	Non-W-Beijing	01-2522	2.8	2.4	7.5	0.01	0.004
	MDR	W-Beijing	03-0265
Test 8	MDR	Non-W-Beijing	03-0850	5.6	5.1	2.7	0.8	0.85
	S	W-Beijing	02-2761

S: susceptible to first and second-line drugs tested; MDR: multidrug resistant strain.