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Pasteurella multocida capsular: lipopolysaccharide types D:L6 and A:L3 remain to be the main epidemic genotypes of pigs in China by Songtao Liu; Lin Lin; Hao Yang; Wenqing Wu; Long Guo; Yue Zhang; Fei Wang; Xueying Wang; Wenbo Song; Lin Hua; Wan Liang; Xibiao Tang; Huanchun Chen; Zhong Peng; Bin Wu is a Medicine article available to read on EtoBox.

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## Abstract Pasteurella multocida is a leading cause of respiratory disorders in pigs. This study was designed to understand the genotypical and antimicrobial resistant characteristics of P. multocida from pigs in China. To achieve this, we briefly investigated 158 P. multocida isolates from pigs with respiratory disorders in China between 2019 and 2020. Genotyping through multiplex PCR assays assigned these 158 isolates into capsular genotypes A (60.13%, 95/158), D (35.44%, 56/158), F (4.43%, 7/158), and/or lipopolysaccharide (LPS) genotypes L3 (28.48%, 45/158) and L6 (66.46%, 105/158). In addition, eight isolates (5.06%, 8/158) were found to be nontypable using the LPS genotyping method. When combining the capsular genotypes and the LPS genotypes, D: L6 (34.81%, 55/158) and A: L6 (31.65%, 50/158) were the predominant genotypes, followed by A: L3 (24.05%, 38/158). PCR detection of virulence factor-encoding genes showed that over 80% of the isolates were positive for exbB, tonB, exbD, ompH, ptfA, fimA, sodA, sodC, fur, ompA, oma87, plpB, hsf-2, nanH and hgbB, suggesting the presence of these genes were broad characteristics of P. multocida. We also found approximately 63.92% (101/1

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Author

Songtao Liu; Lin Lin; Hao Yang; Wenqing Wu; Long Guo; Yue Zhang; Fei Wang; Xueying Wang; Wenbo Song; Lin Hua; Wan Liang; Xibiao Tang; Huanchun Chen; Zhong Peng; Bin Wu

Publisher

Springer Science and Business Media LLC

Published

2021

Language

EN

Field

Medicine (Life Sciences)