Detection and risk factor analysis of avian colibacillosis associated with colistin-resistant Escherichia coli and Klebsiella pneumoniae

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Udgivet i:Frontiers in Veterinary Science vol. 12 (Jul 2025), p. 1612542-1612554
Hovedforfatter: Saeed, Muhammad Adnan
Andre forfattere: Haseeb Asif, Ehtisham-ul-Haque, Syed, Khan, Aman Ullah, Aziz ur Rehman, Rehman, Aiman, Muhammad Kamran Rafique, Ahmed, Ishtiaq, Qamar, Muhammad Fiaz, Herbert, Tomaso, El-Adawy, Hosny
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Frontiers Media SA
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022 |a 2297-1769 
024 7 |a 10.3389/fvets.2025.1612542  |2 doi 
035 |a 3280620472 
045 2 |b d20250701  |b d20250731 
100 1 |a Saeed, Muhammad Adnan  |u Department of Pathobiology (Microbiology Section), University of Veterinary and Animal Sciences, Lahore, Pakistan 
245 1 |a Detection and risk factor analysis of avian colibacillosis associated with colistin-resistant Escherichia coli and Klebsiella pneumoniae 
260 |b Frontiers Media SA  |c Jul 2025 
513 |a Journal Article 
520 3 |a Colibacillosis associated with colistin-resistant avian pathogenic Escherichia coli ( E. coli ) poses a threat to both food security and public health. The potential horizontal transmission of mobilized colistin-resistant ( mcr ) genes facilitates the co-emergence of Klebsiella pneumoniae . This study aimed to determine the prevalence, molecular detection, analyze the antibiogram and identify associated risk factors for colistin-resistant E. coli and Klebsiella pneumoniae isolated from broiler chicken in three districts of Punjab province, Pakistan. In total, 230 visceral organ samples were collected from 13 different chicken farms located in Sargodha, Jhang and Toba Tek Singh in Pakistan. Following isolation, the broth microdilution test was used to confirm phenotypic colistin resistance. Polymerase chain reaction was used to detect mcr- 1 and mcr- 2 genes associated with colistin resistance. Antimicrobial susceptibility test against 11 antibiotics was performed using the Kirby-Bauer disk diffusion method. Risk factors associated with colistin-resistant bacteria, including host attributes, farm management practices, environmental and agent characteristics, were analyzed. The prevalence of colistin-resistant E. coli and K. pneumoniae was 24.78% (95% CI, 19.6–30.7%) and 3.04% (95% CI, 1.5–6.1%), respectively. The prevalence of colistin-resistant E. coli varied between cities at 42, 23.61 and 5.55% for Jhang, Sargodha and Toba Tek Singh, respectively. The detection frequency of mcr- 1 gene, 42.1% (24/57), was significantly ( p < 0.01) higher than that of the mcr- 2 gene, 14.03% (8/57). Phylogenetic analysis of lipid A phosphoethanolamine transferase sequences revealed greater similarity with mcr- 1.5 variant. Isolates were found resistant to amoxicillin-clavulanic acid (84.21%), cefotaxime (70.17%), and trimethoprim-sulfamethoxazole (73.68%). The multivariate logistic regression predicted preceding viral infection of the respiratory tract as a significant association (OR = 4.808, p < 0.01), whereas daily removal/culling of dead/diseased chicken (OR = 0.308, p = 0.01) was a protective factor against the emergence of colistin-resistant strains. These findings indicate that the emergence of colistin-resistant strains deteriorate colibacillosis control efforts in poultry and serves as a possible reservoir for zoonotic infections. 
651 4 |a United Kingdom--UK 
651 4 |a United States--US 
651 4 |a Lahore Pakistan 
651 4 |a Pakistan 
653 |a Vaccines 
653 |a Klebsiella 
653 |a Agricultural practices 
653 |a Clavulanic acid 
653 |a Biosecurity 
653 |a Antibiotics 
653 |a Immunization 
653 |a Farm management 
653 |a Food security 
653 |a Environmental management 
653 |a Acid resistance 
653 |a Trimethoprim 
653 |a Risk factors 
653 |a Chickens 
653 |a Trimethoprim-sulfamethoxazole 
653 |a Lipid A 
653 |a E coli 
653 |a Public health 
653 |a Strains (organisms) 
653 |a Animal sciences 
653 |a Pericarditis 
653 |a Peritonitis 
653 |a Food contamination & poisoning 
653 |a Genes 
653 |a Bacteria 
653 |a Colibacillosis 
653 |a Factor analysis 
653 |a Disease prevention 
653 |a Gram-negative bacteria 
653 |a Cefotaxime 
653 |a Drug resistance 
653 |a Horizontal transmission (disease) 
653 |a Colistin 
653 |a Sulfamethoxazole 
653 |a Polymerase chain reaction 
653 |a Farms 
653 |a Bacterial infections 
653 |a Respiratory tract 
653 |a Antimicrobial agents 
653 |a Lipids 
653 |a Poultry farming 
653 |a Poultry 
653 |a Escherichia coli 
653 |a Klebsiella pneumoniae 
700 1 |a Haseeb Asif  |u Department of Pathobiology (Microbiology Section), University of Veterinary and Animal Sciences, Lahore, Pakistan 
700 1 |a Ehtisham-ul-Haque, Syed  |u Department of Pathobiology (Microbiology Section), University of Veterinary and Animal Sciences, Lahore, Pakistan 
700 1 |a Khan, Aman Ullah  |u Department of Pathobiology (Microbiology Section), University of Veterinary and Animal Sciences, Lahore, Pakistan 
700 1 |a Aziz ur Rehman  |u Department of Pathobiology (Pathology Section), University of Veterinary and Animal Sciences, Lahore, Pakistan 
700 1 |a Rehman, Aiman  |u Department of Pathobiology (Microbiology Section), University of Veterinary and Animal Sciences, Lahore, Pakistan 
700 1 |a Muhammad Kamran Rafique  |u Department of Pathobiology (Pathology Section), University of Veterinary and Animal Sciences, Lahore, Pakistan 
700 1 |a Ahmed, Ishtiaq  |u Department of Pathobiology (Pathology Section), University of Veterinary and Animal Sciences, Lahore, Pakistan 
700 1 |a Qamar, Muhammad Fiaz  |u Department of Pathobiology (Parasitology Section), University of Veterinary and Animal Sciences, Lahore, Pakistan 
700 1 |a Herbert, Tomaso  |u Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut, Jena, Germany 
700 1 |a El-Adawy, Hosny  |u Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut, Jena, Germany 
773 0 |t Frontiers in Veterinary Science  |g vol. 12 (Jul 2025), p. 1612542-1612554 
786 0 |d ProQuest  |t Agriculture Science Database 
856 4 1 |3 Citation/Abstract  |u https://www.proquest.com/docview/3280620472/abstract/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch 
856 4 0 |3 Full Text  |u https://www.proquest.com/docview/3280620472/fulltext/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch 
856 4 0 |3 Full Text - PDF  |u https://www.proquest.com/docview/3280620472/fulltextPDF/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch