Table 2

 Primary resistance of Helicobacter pylori to clarithromycin, metronidazole, and amoxicillin in children in Europe

CountryYearsType of studyMethod of testingNo of strainsClariR prevalence (%)95% CIMetroR prevalence (%)95% CIAmoxiR prevalence (%)Reference
Data from studies including more than 100 patients published during the last five years.
ClariR, clarithromycin resistant; MetroR, metronidazole resistant; AmoxiR, amoxicillin resistant.
DD, disk diffusion method; AD, agar dilution method; ND, not determined; 95% CI, 95% confidence interval; C, centre.
Austria1997–2000BiCEtest11720.313.6–291610.1–24.20Crone38
Belgium1989–2000MonoCDD5551613.1–19.41814.9–21.50Bontems39
Bulgaria2000–2001MonoCAD11512.46.8–19.615.89.5–23.60Boyanova40
France1994–1999MonoCEtest1502115.1–28.84335.3–51.70Kalach41
Poland1998–2000MonoCAD9823.515.5–33.1NDNDDzierzanowska-Fangrat42
Spain1991–1999MonoCAD24621.116.2–26.82318.0–29.00Lopez Brea43