Table 1.

Primers Used in This Study

Region	Primer	Nucleotide sequence
cagA	cagA-F	5′-AACAGGACAAGTAGCTAGCC
	cagA-R	5′-GATAACAGGCAAGCTTTTGA
cagE	HPPB-1F	5′-TCTATAAAGAGAGGGGTGTT
	HPPB-1R	5′-GGCTAATCTTTGGTAATCAG
cagF	cagF-F	5′- ATGAAACAAATTTGCGTGA
	cagF-R	5′-TCAATCGTTATTTTTGTTTT
cagH	cagH-F	5′-ATGGCAGGTACACAAGCTAT
	cagH-R	5′-TCACTTCACGATTATTTTAG
cagM	cagM-F	5′-ATGCTTGCAAAAATTGTTTT
	cagM-R	5′-CTATTCAAAGGGATTATTCT
cagT	cagT-F	5′-CCATGTTTATACGCCTGTGT
	cagT-R	5′-CATCACCACACCCTTTTGAT
left end of cag	cagLEC-F	5′-ACATTTTGGCTAAATAAACGCTG
	cagLEC-R1	5′-TCTCCATGTTGCCATTATGCT
vacA	vacA-C1	5′-ATGGAAATACAACAAACACACCGCA
	vacA-C2	5′-TTAGAAACTATACCTCATTCCTAAA
HP0887-0888	HP887F	5′-TCATAGCGATTGGCGTGGAA
	HP888R	5′-GCTTGGAATTAGAGTCCTTA
HP0888	HP888F	5′-ATGAACGCTGGAGTTTTACA
	HP888R	5′-GCTTGGAATTAGAGTCCTTA