Antibiotic resistance of and related risk factors in Hunan Province: A multicenter study.

Background: Antibiotic resistance is a key factor influencing the treatment outcomes of () infection. The antibiotic resistance spectrum of varies in different regions. We investigated the current status of antibiotic resistance of in Hunan Province and analyzed the factors related to such resistance to provide strategies for the accurate clinical treatment of infection.

Aim: To understand the antibiotic resistance of in Hunan Province and provide guidance for the clinical treatment of infection.

Methods: This study selected patients who underwent gastroscopy in five hospitals in Hunan Province from April 2022 to April 2023. The sensitivity of to clarithromycin, levofloxacin, metronidazole, amoxicillin, furazolidone, and tetracycline was detected using the Agar dilution method.

Results: strains from a total of 566 patients were isolated and identified. The resistance rates of strains to clarithromycin, levofloxacin, metronidazole, amoxicillin, furazolidone, and tetracycline were 49.2%, 37.8%, 76.1%, 2.3%, 1.4%, and 0.7%, respectively. The resistance rates to clarithromycin, levofloxacin, and metronidazole were high in the four regions of Hunan Province, and the overall resistance rates in central Hunan Province were higher than those in other regions. The resistance rates of strains to clarithromycin and levofloxacin were significantly different among the different age groups ( < 0.05), with the elderly group having a higher resistance rate than the young group. The resistance rate of strains to clarithromycin was greater in patients with atrophic gastritis, and the resistance rate to levofloxacin was the lowest in patients with peptic ulcers.

Conclusion: The resistance rate of to amoxicillin, clarithromycin, and metronidazole is high in Hunan Province. Age, stomach disease, and reinfection may affect the antibiotic resistance of .