Table 1.

Seven extended-spectrum beta-lactamase (ESBL)-producing E. coli isolates from three faecal samples collected from one patient at three different time points. Additional phenotypic resistance detected in each isolate is shown in the parentheses.

	Faecal samples
	Sample 1 (time 0)	Sample 2 (after 6 months)	Sample 3 (after 9 months)
E. coli phenotypes isolated	433-tz (SXT resistant)	432-AT128 (SXT resistant)	431-Ts-o (SXT resistant)
	433-at (SXT and TET resistant)	432-CT-a-32 (SXT and TET resistant)	431-Ts-lys (SXT and TET resistant)
			431-Tz (No additional resistance)

SXT, trimethoprim-sulfamethoxazole; TET, tetracycline.