Antibiogram data from private hospitals in Hong Kong: 6-year retrospective study.

Introduction: The surveillance of antibiotic resistance is critical for the establishment of effective control strategies. The antibiotic resistance situations in private hospitals in Hong Kong have not been systematically described. The objective of the study was to analyse antibiogram data from private hospitals and describe the temporal trends of non-susceptibility percentages in this setting.

Methods: This retrospective descriptive study used antibiogram data from all private hospitals in Hong Kong that had been collected annually for 6 years (2014-2019). Data on six targeted bacteria and their corresponding multidrug-resistant organisms were included.

Results: The non-susceptibility percentages of isolates remained stable or decreased during the study period: methicillin-resistant had a stable prevalence of approximately 20%; extended-spectrum beta-lactamase-producing and species had stable prevalences of 20% to 30% and 10% to 20%, respectively; multidrug-resistant species had prevalences of approximately 2% to 8%, which decreased over time; multidrug-resistant had prevalences of 0.0% to 0.3%; penicillin and macrolide non-susceptibility percentages were 2% to 9% and 71% to 79%, respectively. These values generally were comparable with findings from public hospitals and Residential Care Homes for the Elderly in Hong Kong. However, the prevalences of carbapenem-resistant Enterobacteriaceae, which are increasing in Hong Kong and other nations, were also increasing in our dataset despite their currently low values (<1% for and <2% for species).

Conclusion: The antibiotic resistance landscape among private hospitals in Hong Kong is satisfactory overall; there remains a need for surveillance, antibiotic stewardship, and other infection control measures.