Abstract:
β-Lactam-resistant Klebsiella isolates continue to cause multidrug resistance infections
worldwide. This study aimed to describe the geographical distribution of extended spectrum
β-lactamase (ESBL), AmpC β-lactamase (AmpC), and carbapenemase production among 139 Klebsiella
isolates recovered from patients at major referral health facilities in Ghana. The phenotypic methods
of combined disc diffusion test, modified three-dimensional test, modified Hodge test (MHT),
and combined disc test were performed for each isolate to detect ESBL, AmpC, carbapenemase,
and metallo-β-lactamase (MBL) producers, respectively. Except for MBL, all other β-lactam resistance
mechanisms were highest in the healthcare facilities situated in the northern belt of Ghana. Significant
regional difference of ESBL producers was observed between the northern and middle belts as well
as the northern and southern belts. Genotypic detection with polymerase chain reaction (PCR)
revealed the presence of bla TEM 36/139 (25.9%), bla SHV 40/139 (28.8%), bla CTX-M 37/139 (26.6%),
bla OXA-48 3/139 (2.16%), and bla NDM 1/139 (0.72%) genotypes. In conclusion, there were variations
in β-lactam resistance among Klebsiella spp. from health facilities situated in the northern, middle,
and southern belts of Ghana. The study provides preliminary evidence that emphasizes the need
to direct more attention to antimicrobial resistance control, especially in the northern belt of Ghana.
Findings from this study may be critical for creating and fine-tuning effective antimicrobial resistance
control strategies and for informing accurate antibiotic prescription by practitioners.
