Helicobacter pylori in bottled mineral water: genotyping and antimicrobial resistance properties

BMC Microbiology

Table 2 Antimicrobial resistance pattern of Helicobacter pylori isolates of tested bottled mineral water samples

Brands (No. positive)	Pattern of antibiotic resistance (%)
Brands (No. positive)	AM10^*	Met5	ER5	CLR2	AMX 10	Lev5	Cef30	TRP25	FZL1	Mox5	Tin4	CIP5
A (1)	1 (100)^a	1 (100)^a	1 (100)^a	1 (100)^a	1 (100)^a	-	-	-	-	-	-	-
B (1)	1 (100)^a	1 (100)^a	1 (100)^a	1 (100)^a	1 (100)^a	1 (100)a	-	1 (100)^a	-	-	1 (100)^a	1 (100)^a
C (4)	2 (50)^a	2 (50)^a	2 (50)^a	2 (50)^a	2 (50)^a	2 (50)a	1 (25)^b	3 (75)^a	1 (25)^b	1 (25)^b	2 (50)^a	2 (50)^a
D (2)	2 (100)^a	1 (50)^a	1 (50)^a	1 (50)^a	1 (50)^a	1 (50)a	1 (50)^b	1 (50)^a	1 (50)^b	1 (50)^b	1 (50)^a	1 (50)^a
Total (8)	6 (75)^a, *	5 (62.5)^a	5 (62.5)^a	5 (62.5)^a	5 (62.5)^a	4 (50)^a	2 (25)^b	5 (62.5)^a	2 (25)^b	2 (25)^b	4 (50)^a	4 (50)^a

^*AM10: ampicillin (10 μg), Met5: metronidazole (5 μg), ER5: erythromycin (5 μg), CLR2: clarithromycin (2 μg), AMX10: amoxicillin (10 μg), Lev5: levofloxacin (5 μg), Cef30: cefsulodin (30 μg), TRP25: trimethoprim (25 μg), FZL1: furazolidone (1 μg), Mox5: moxifloxacin (5 μg), Tin: tinidazole (prepared from pure powders, Sigma, 5 μg) and CIP5: ciprofloxacin (5 μg)
^{a, b}Dissimilar letters in each row shows significant differences about P <0.05

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