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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 14, Issue:8, August, 2025

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com /
submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2025.14(8): 243-251
DOI: https://doi.org/10.20546/ijcmas.2025.1408.023


Antibiotic Resistance Profile in Klebsiella pneumoniae and Klebsiella oxytoca Isolated from Urine in the Republic of Congo
Nicole Prisca Makaya Dangui Nieko1*, Tarcisse Baloki Ngoulou2,3, Christian Aimé Kayath2,4 and Etienne Nguimbi2,3,4
1Laboratoire de Microbiologie, Infectiologie et Immunologie, École Normale Supérieure, Université Marien Ngouabi, Brazzaville, Congo
2Laboratoire de Biologie Cellulaire et Moléculaire, Faculté des sciences et techniques, Université Marien NGOUABI, Brazzaville, République du Congo
3Unité de Biologie Moléculaire et de Bio-informatique, Faculté des sciences et techniques, Université Marien Ngouabi, Brazzaville, République du Congo
4Institut national de Recherches en Sciences Exactes et Naturelles (IRSEN), Brazzaville, République du Congo
*Corresponding author
Abstract:

The emergence and spread of antibiotic resistance means an increased risk of therapeutic failure. They lead to longer hospital stays, higher treatment costs and increased morbidity and mortality, compromising the fight against infectious diseases. A total of 2,876 urine samples were collected and analyzed using conventional microbiology techniques. Bacteria were identified on the basis of biochemical characteristics. Sensitivity testing was carried out using the standard Mueller-Hinton agar diffusion method. It should be noted that 1484 (51.6%) samples were positive out of 2876 after culture. After identification, 256 (17.25%) bacteria were from the Klebsiella genus, compared with 1228 from other genera. The 256 Klebsiella strains were made up of 104 (40.62%) K. pneumoniae and 152 (59.38%) Klebsiella oxytoca, mostly isolated from urine collected from women. Both species were more responsive in patients over 40 years of age. The sensitivity test showed that K. pneumoniae were more sensitive to norfloxacin, gentamicin and netilmicin, with rates of 18.26%, 21.11% and 22.15%, versus 91.34% for cotrimoxazole and amoxicillin + clavulanic acid. Other rates were also observed: Ceftriaxone (38.46%), Ciprofloxacin (48.07%), Ofloxacin (49.03%), Cefotaxim (64.42%), Nalidixic Acid (74.03%) and Chloramphenicol (77.88%). In K.oxytoca, netilmicin and norfloxacin were more active, with rates of 10.52% and 22.36% respectively. High rates of resistance in K.oxytoca were observed with cotrimoxazole (78.94%) and amoxicillin + clavulanic acid (78.98%). Some antibiotics showed rates such as 42.76% for Cefotaxime, 52.63% for Ceftriaxone, 36.18% for Gentamicin 33.55% for Ciprofloxacin, 59.86% for Nalidixic acid, 46.05% for Ofloxacin and 67.10% for Chloramphenicol. Quinolones were more active, with rates of 21.63% in K. pneumoniae and 23.35% in K.oxytoca. Over half of Klebsiella strains also showed resistance to at least two antibiotics. This increase and spread of resistance could be due to unjustified antibiotic use, antibiotic selection pressure and genetic exchange. The above-mentioned antibiotics can be used as first-line treatment for Klebsiella infections.


Keywords: Resistance, Antibiotic, Klebsiella pneumoniae, Klebsiella oxytoca, Urine


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How to cite this article:

Nicole Prisca Makaya Dangui Nieko, Tarcisse Baloki Ngoulou, Christian Aimé Kayath and Etienne Nguimbi. 2025. Antibiotic Resistance Profile in Klebsiella pneumoniae and Klebsiella oxytoca Isolated from Urine in the Republic of Congo.Int.J.Curr.Microbiol.App.Sci. 14(8): 243-251. doi: https://doi.org/10.20546/ijcmas.2025.1408.023
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