Brighton Nkunika
Research Subjects
Research Interests
Brighton Nkunika has a total of 12 co-authors. Here are the top co-authors by number of shared publications:
- Alfred Maluwa
Academy of Medical Sciences, Malawi University of Science and Technology, P.O. Box 5196, Limbe, Malawi
1 shared publication - Chisomo Redson
Department of Management and Leadership Studies, University of Malawi, Zomba, Malawi
1 shared publication - Henson Kainga
Department of Veterinary Epidemiology and Public Health, Faculty of Veterinary Medicine, Lilongwe University of Agriculture and Natural Resources, Lilongwe, Malawi
1 shared publication - John Njalam’mano
Department of Water Resources Management, Ndata School of Climate and Earth Sciences, Malawi University of Science and Technology, Limbe P.O. Box 5196, Malawi
1 shared publication - John Taulo
Department of Energy Resources, Ndata School of Climate and Earth Sciences, Malawi University of Science and Technology, Limbe, Malawi
1 shared publication - Lecollins Mthirakuwiri
Department of Animal Health and Livestock Development, Central Veterinary Laboratory, Lilongwe, Malawi
1 shared publication
Latest Publications
- Open Access
- 23 December 2025
- Published by Springer Nature in BMC Veterinary Research
- Vol. 22 (1)
Antimicrobial susceptibility of Escherichia coli, Klebsiella pneumoniae, and Enterococcus species and the associated risk factors in poultry farms in Blantyre City: a wake-up call to the one health approach
Background: Small scale poultry farming often involves intensive farming which includes the extensive use of antibiotics for growth promotion and disease prevention. This can be used as a focal point for understanding the spread of resistant bacteria among the livestock, human and the environment interface. This study aimed at unravelling the antimicrobial use and resistance in small scale poultry farmers in Blantyre, Malawi. Methods: Samples from chickens, humans and the environment were collected from various poultry farms to assess resistant profiles for Escherichia coli , Klebsiella pneumoniae , and Enterococcus species. Bacterial culturing and disc diffusion methods were used to isolate and assess the antimicrobial resistance (AMR) profiles of the isolated bacteria respectively. Logistic and linear regression tests were used to assess potential risk factors for the AMR. Results: The study revealed uniform resistance profiles of E. coli to ampicillin, cefotaxime, ciprofloxacin, gentamicin and sulfamethoxazole trimethoprim across samples from humans, chickens and their shared environment. The K. pneumoniae resistance profiles to sulfamethoxazole trimethoprim were higher in chicken and environmental samples compared to the human samples. The resistance profiles for Enterococcus species to vancomycin, linezolid, ciprofloxacin and tigecycline were similar across the three sample types. Nevertheless, E. coli and K. pneumoniae showed 100% sulfamethoxazole trimethoprim, while the Enterococcus species showed 80% resistance to vancomycin from all the three sample types. Farms that did not observe withdrawal periods were five times more likely to experience AMR (OR = 5.32, 95% CI: 1.89–14.94, p = 0.013) than the farms that observed withdrawal periods. Farms that had inadequate waste management practices were three times more likely to experience AMR (OR = 3.42, 95% CI: 1.22–9.59, p = 0.037) than the farms that had adequate waste management practices. Conclusions: The study confirms occurrence of AMR in the poultry farming, humans and the environment influenced by both biological and management factors. The similar resistance patterns across three sample types suggest a dynamic transmission of resistant bacteria at the human-animal-environment interface, hence emphasizing the need for a One health approach to mitigate AMR.
- 23 December 2025
- Published by Springer Nature in BMC Veterinary Research
- Vol. 22 (1)
Open AccessAntimicrobial susceptibility of Escherichia coli, Klebsiella pneumoniae, and Enterococcus species and the associated risk factors in poultry farms in Blantyre City: a wake-up call to the one health approach
Background: Small scale poultry farming often involves intensive farming which includes the extensive use of antibiotics for growth promotion and disease prevention. This can be used as a focal point for understanding the spread of resistant bacteria among the livestock, human and the environment interface. This study aimed at unravelling the antimicrobial use and resistance in small scale poultry farmers in Blantyre, Malawi. Methods: Samples from chickens, humans and the environment were collected from various poultry farms to assess resistant profiles for Escherichia coli , Klebsiella pneumoniae , and Enterococcus species. Bacterial culturing and disc diffusion methods were used to isolate and assess the antimicrobial resistance (AMR) profiles of the isolated bacteria respectively. Logistic and linear regression tests were used to assess potential risk factors for the AMR. Results: The study revealed uniform resistance profiles of E. coli to ampicillin, cefotaxime, ciprofloxacin, gentamicin and sulfamethoxazole trimethoprim across samples from humans, chickens and their shared environment. The K. pneumoniae resistance profiles to sulfamethoxazole trimethoprim were higher in chicken and environmental samples compared to the human samples. The resistance profiles for Enterococcus species to vancomycin, linezolid, ciprofloxacin and tigecycline were similar across the three sample types. Nevertheless, E. coli and K. pneumoniae showed 100% sulfamethoxazole trimethoprim, while the Enterococcus species showed 80% resistance to vancomycin from all the three sample types. Farms that did not observe withdrawal periods were five times more likely to experience AMR (OR = 5.32, 95% CI: 1.89–14.94, p = 0.013) than the farms that observed withdrawal periods. Farms that had inadequate waste management practices were three times more likely to experience AMR (OR = 3.42, 95% CI: 1.22–9.59, p = 0.037) than the farms that had adequate waste management practices. Conclusions: The study confirms occurrence of AMR in the poultry farming, humans and the environment influenced by both biological and management factors. The similar resistance patterns across three sample types suggest a dynamic transmission of resistant bacteria at the human-animal-environment interface, hence emphasizing the need for a One health approach to mitigate AMR.