Table 3.

Results of Quantitative Real-Time Polymerase Chain Reaction for Major Bacterial Groups for 10 Patients Receiving Vancomycin or Fidaxomicin for 10 Days, Followed by 4 Weeks of Follow-up

	Bacteroides		Prevotella		Clostridium coccoides group		Clostridium leptum group		Bifidobacteria		Enterobacteriaceae		Lactobacillus		Enterococcaceae
	Mean log10 CFU ± SD		Mean log10 CFU ± SD		Mean log10 CFU ± SD		Mean log10 CFU ± SD		Mean log10 CFU ± SD		Mean log10 CFU ± SD		Mean log10 CFU ± SD		Mean log10 CFU ± SD
Day	Vancomycin	Fidaxomicin	Vancomycin	Fidaxomicin	Vancomycin	Fidaxomicin	Vancomycin	Fidaxomicin	Vancomycin	Fidaxomicin	Vancomycin	Fidaxomicin	Vancomycin	Fidaxomicin	Vancomycin	Fidaxomicin
0	7.61 ± 2.21	8.52 ± 1.53	7.62 ± 2.17	8.11 ± 1.66	7.89 ± 1.58	8.17 ± 0.71	5.41 ± 2.21	5.81 ± 2.22	6.96 ± 0.72	6.35 ± 1.42	7.50 ± 1.70	7.94 ± 0.70	7.55 ± 0.62	7.62 ± 0.54	6.17 ± 0.51	5.48 ± 1.35
4	4.26 ± 0.88	7.81 ± 1.54	5.30 ± 0.81	7.84 ± 1.61	4.73 ± 0.53	6.91 ± 0.94	2.04 ± 0.39	3.53 ± 5.08	5.30 ± 0.81	5.30 ± 1.33	8.52 ± 1.46	8.81 ± 0.87	7.90 ± 0.45	7.10 ± 0.78	5.23 ± 0.31	5.75 ± 1.18
10	5.26 ± 0.91	9.33 ± 1.30	5.50 ± 0.92	8.84 ± 1.19	4.68 ± 0.73	8.49 ± 0.55	2.02 ± 1.31	5.08 ± 2.26	5.17 ± 1.09	6.28 ± 1.40	8.84 ± 0.57	7.84 ± 1.18	7.91 ± 0.70	7.64 ± 0.65	5.43 ± 0.36	5.93 ± 0.95
14	5.99 ± 2.10	9.52 ± 1.19	5.43 ± 1.30	9.06 ± 1.04	6.74 ± 2.21	8.65 ± 0.44	4.03 ± 1.83	5.29 ± 2.37	6.56 ± 1.43	6.18 ± 1.75	8.01 ± 1.04	7.98 ± 0.80	8.11 ± 0.43	7.66 ± 0.73	6.26 ± 0.85	6.07 ± 1.22
21	5.95 ± 2.30	9.30 ± 1.44	6.63 ± 2.21	8.97 ± 1.37	8.51 ± 0.64	8.73 ± 0.58	5.85 ± 1.21	5.83 ± 2.19	6.94 ± 0.93	6.06 ± 1.69	7.62 ± 1.03	7.06 ± 0.92	7.69 ± 0.48	7.34 ± 0.93	6.15 ± 0.67	6.12 ± 0.90
28	6.95 ± 2.87	9.08 ± 1.16	6.83 ± 2.54	8.93 ± 0.85	8.66 ± 1.11	8.07 ± 1.45	6.18 ± 1.01	5.82 ± 1.35	5.89 ± 1.19	6.10 ± 1.35	7.33 ± 1.18	5.95 ± 2.14	7.65 ± 0.55	7.23 ± 1.09	5.77 ± 0.72	5.79 ± 0.73
42	7.83 ± 1.70	9.34 ± 0.73	7.89 ± 1.63	9.22 ± 0.35	8.41 ± 0.69	8.40 ± 0.82	7.09 ± 1.33	6.89 ± 1.08	5.62 ± 1.51	6.11 ± 1.17	6.52 ± 1.61	6.50 ± 1.10	7.50 ± 0.50	7.60 ± 0.80	5.77 ± 0.76	5.71 ± 0.79

Data are CFU per gram of stool. Statistical comparisons are specified in Figure 11. Results support data in Figures 1–10.

Abbreviations: CFU, colony-forming unit; SD, standard deviation.