TABLE 3.

Susceptibilities of pairs of H. pylori strains isolated before and after treatment failure with a nitazoxanide-containing regimen to nitazoxanide and tizoxanide

Paira	MIC (μg/ml)
	Nitazoxanide		Tizoxanide
	Before treatment	After treatment	Before treatment	After treatment
A	4	8	4	8
B	8	8	4	8
C	2	4	4	4
D	4	4	8	4
E	4	4	8	8
F	2	1	2	2

^aPairs A, B, D, and E were identical. Pairs C and F were nonidentical.