Phenotype and Molecular Detection of Clarithromycin and Levofloxacin Resistance in Clinical Isolates in Beijing.

Introduction: Understanding drug resistance is important in drug selection for () eradication, and drug resistance data are lacking in Beijing.

Purpose: This cross-sectional study aimed to isolate from patients with gastroduodenal diseases and to analyze drug resistance to clarithromycin (CLA) and levofloxacin (LEV), which are used frequently in China.

Patients And Methods: One hundred and seventy-six patients with gastroduodenal diseases undergoing gastroduodenoscopy were selected by convenient sampling.