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Complement Resistance-Related Traits Among Escherichia Coli Isolates From Apparently Healthy Birds And Birds With Colibacillosis, Samantha J. Pfaff-Mcdonough, Shelley M. Horne, Catherine W. Giddings, Jessica O. Ebert, Curt Doetkott, M. Herbert Smith, Lisa K. Nolan
Complement Resistance-Related Traits Among Escherichia Coli Isolates From Apparently Healthy Birds And Birds With Colibacillosis, Samantha J. Pfaff-Mcdonough, Shelley M. Horne, Catherine W. Giddings, Jessica O. Ebert, Curt Doetkott, M. Herbert Smith, Lisa K. Nolan
Lisa K. Nolan
In this study, 294 Escherichia coli isolates from birds with colibacillosis were collected from disease outbreaks throughout the United States and were compared with 75 fecal E. coli isolates of apparently healthy chickens by their possession of several purported virulence genes, resistance to rough-lipopolysaccharide-specific bacteriophages (rLPSr), and elaboration of capsule. Traits were selected for study on the basis of their association with complement resistance. The genes targeted in this study included those encoding colicin V (cvaC) and the outer membrane proteins TraT (traT), OmpA (ompA), and Iss (iss). No significant differences were found between the two groups of isolates in …