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We evaluated the antibiotic susceptibility of 233 Helicobacter pylori strains isolated in the period 2011–2016, involving 62 strains from elderly patients aged 66–93years and 171 strains from younger adults. To assess resistance evolution, primary resistance rates in 92 strains from as many patients aged ≥60years in 1996–2003 were compared with those in 85 strains from infected patients in the same...
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