The low prevalence of cagA and the high prevalence of vacA genotype s2m2 in Israeli pediatric patients are different from the genotype prevalence reported globally. However, similar findings have been reported in Egypt, indicating a possible geographic influence. There is a possible correlation between duodenal ulcer and cag E and ice A1 genotype, but the power of the study was too low to prove it.

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There is a trend of greater efficacy of eradication with omeprazole + amoxicillin with metronidazole versus omeprazole + amoxicillin with clarithromycin therapy. Although resistance negatively influences eradication, first-line sensitivity-based treatment would be expected to improve this rate only slightly. Susceptibility testing should probably be reserved only for treatment failures.

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