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Comparison of resistance of H. pylori primary and secondary strains to clarithromycin and levofloxacin in 2009–2011.
| Antimicrobial agent | No. (%) of resistant H. pylori strains in the | ||
|---|---|---|---|
| years 2009–2011 | |||
| All strains | Primary strains | Secondary strains | |
| n = 51 | n = 43 | n = 8 | |
| CLA(1) | 11 (22%) | 8 (19%) | 3 (38%) |
| LEV(1) | 8 (16%) | 5 (12%) | 3 (38%) |
(1)CLA: clarithromycin, LEV: levofloxacin.
