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Sahoo M, Baloni S, Thakor JC, Kumar P, Thomas P, Nagaleekar VK, Dhama K, Singh R, Singh KP, Mani S, Qureshi S, Kumar A, Patel SK, Biswal JK, Sahoo NR. Pathology, virulence-associated gene profiling, antimicrobial susceptibility, and pathogenicity of untypeable capsular serotypes of Pasteurella multocida isolated from slaughtered pigs of India. Lett Appl Microbiol 2023; 76:ovad112. [PMID: 37796828 DOI: 10.1093/lambio/ovad112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/14/2023] [Accepted: 09/19/2023] [Indexed: 10/07/2023]
Abstract
Pasteurella multocida is widely distributed in all pig-rearing countries, affecting the economic viability and profitability of pig production. The present research highlights the molecular characterization and pathology of untypeable capsular serotypes of P. multocida in slaughtered pigs from prominent pig-rearing states of India. The prevalence of Pasteurellosis was 27.17% by Pasteurella multocida specific Pasteurella multocida specific PCR (PM-PCR). assay, while isolation rate was 7.62%. The microscopic lesions of bronchopneumonia, tonsillitis, and the presence of bacterial antigens in immunohistochemistry confirmed P. multocida with pathologies. In capsular typing, the majority of the isolates were untypeable with prevalence of 52.15% and 43.58% in molecular and microbiological methods, respectively. All the isolates showed the uniform distribution of virulence genes such as exbB, nanB, sodC, plpB, and oma87 (100%), while the variations were observed in ptfA, hasR, ptfA, pfhA, hsf-1, and plpE genes. The untypeable isolates showed higher prevalence of hsf-1 gene as compared to others. The untypeable serotypes showed a higher degree of resistance to ampicillin, amoxicillin, and penicillin antibiotics. The mouse pathogenicity testing of untypeable capsular isolates confirmed its pathogenic potential. The higher frequency of pathogenic untypeable isolates with antibiotic resistance profile might pose a serious threat to the pigs, and therefore, preventive measures should be adopted for effective control.
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Affiliation(s)
- Monalisa Sahoo
- Division of Pathology, Indian Veterinary Research Institute (IVRI), Izatnagar, Bareilly 243122, India
- Project Directorate on Foot-and-Mouth Disease, Arugul, Jatni, Bhubaneswar 752050, India
| | - Suraj Baloni
- Division of Pathology, Indian Veterinary Research Institute (IVRI), Izatnagar, Bareilly 243122, India
| | - Jigarji C Thakor
- Division of Pathology, Indian Veterinary Research Institute (IVRI), Izatnagar, Bareilly 243122, India
| | - Pradeep Kumar
- Division of Pathology, Indian Veterinary Research Institute (IVRI), Izatnagar, Bareilly 243122, India
| | - Prasad Thomas
- Division of Bacteriology and Mycology, Indian Veterinary Research Institute (IVRI), Izatnagar, Bareilly 243122, India
| | - Viswas K Nagaleekar
- Division of Bacteriology and Mycology, Indian Veterinary Research Institute (IVRI), Izatnagar, Bareilly 243122, India
| | - Kuldeep Dhama
- Division of Pathology, Indian Veterinary Research Institute (IVRI), Izatnagar, Bareilly 243122, India
| | - Rajendra Singh
- Division of Pathology, Indian Veterinary Research Institute (IVRI), Izatnagar, Bareilly 243122, India
- Veterinary Pathology, Institute of Veterinary Science and Animal Husbandry, Siksha "O" Anusandhan University, Ghatikia, Bhubaneswar 751003, India
| | - Karam P Singh
- CADRAD, Indian Veterinary Research Institute (IVRI), Izatnagar, Bareilly 243122, India
| | - Saminathan Mani
- CADRAD, Indian Veterinary Research Institute (IVRI), Izatnagar, Bareilly 243122, India
| | - Salauddin Qureshi
- Division of Biological Standardization, Indian Veterinary Research Institute (IVRI), Izatnagar, Bareilly 243122, India
| | - Ajay Kumar
- Division of Biochemistry, Indian Veterinary Research Institute (IVRI), Izatnagar, Bareilly 243122, India
| | - Shailesh K Patel
- Department of Veterinary Pathology, College of Veterinary Science and Animal Husbandry, Nanaji Deshmukh Veterinary Science University, Rewa 486001, India
| | - Jitendra K Biswal
- Project Directorate on Foot-and-Mouth Disease, Arugul, Jatni, Bhubaneswar 752050, India
| | - Nihar R Sahoo
- Project Directorate on Foot-and-Mouth Disease, Arugul, Jatni, Bhubaneswar 752050, India
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Calderón Bernal JM, Serna C, García Muñoz Á, Díez Guerrier A, Domínguez L, Fernández-Garayzábal JF, Vela AI, Cid D. Genotypic Comparison of Pasteurella multocida from Healthy Animals at Entry to the Feedlots with That and from Bovine Respiratory Disease-Affected Animals during the Fattening Period. Animals (Basel) 2023; 13:2687. [PMID: 37684951 PMCID: PMC10487216 DOI: 10.3390/ani13172687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/07/2023] [Accepted: 08/20/2023] [Indexed: 09/10/2023] Open
Abstract
The aim of this study was to investigate the possible genotypic differences between commensal Pasteurella multocida isolates from apparently healthy animals (AHA) at the time of entry to feedlots and those from BRD-affected animals (BRD-AA). A total of 20 batches of beef calves in seven feedlots were followed-up during the fattening period. P. multocida was isolated from 28.1% of AHA and 22.9% of BRD-AA. All isolates belonged to the A: L3 genotype. Most isolates from clinical cases (81.0%) grouped into a PFGE cluster were significantly associated with BRD cases (OR, 24.9; 95% CI, 6.4-96.2). The whole genomes of 14 isolates representative of the pulsotypes most frequently detected in BRD-AA and AHA were sequenced and compared with 53 bovine genomes belonging to the identified ST13, ST79, and ST80 genotypes for a global comparison. No differences were found in the virulence-associated gene content between sequence types (STs) globally or between BRD-AA and AHA isolates in this study. Significantly, ST79 isolates harbored ARGs, conferring resistance to different antimicrobials, including macrolides and tetracyclines, which are commonly used for the treatment of BRD. Two Spanish ST79 isolates carried an ICE highly similar to ICE Tn7407, which was recently detected in Germany, suggesting that ST79 P. multocida isolates in Europe and North America may be associated with different ICEs.
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Affiliation(s)
- Johan Manuel Calderón Bernal
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain; (J.M.C.B.); (C.S.); (A.D.G.); (L.D.); (A.I.V.); (D.C.)
| | - Carlos Serna
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain; (J.M.C.B.); (C.S.); (A.D.G.); (L.D.); (A.I.V.); (D.C.)
| | - Ángel García Muñoz
- Departamento Producción y Sanidad Animal, Salud Pública Veterinaria y Ciencia y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, 46115 Valencia, Spain;
| | - Alberto Díez Guerrier
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain; (J.M.C.B.); (C.S.); (A.D.G.); (L.D.); (A.I.V.); (D.C.)
- Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense, 28040 Madrid, Spain
| | - Lucas Domínguez
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain; (J.M.C.B.); (C.S.); (A.D.G.); (L.D.); (A.I.V.); (D.C.)
- Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense, 28040 Madrid, Spain
| | - José Francisco Fernández-Garayzábal
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain; (J.M.C.B.); (C.S.); (A.D.G.); (L.D.); (A.I.V.); (D.C.)
- Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense, 28040 Madrid, Spain
| | - Ana Isabel Vela
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain; (J.M.C.B.); (C.S.); (A.D.G.); (L.D.); (A.I.V.); (D.C.)
- Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense, 28040 Madrid, Spain
| | - Dolores Cid
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain; (J.M.C.B.); (C.S.); (A.D.G.); (L.D.); (A.I.V.); (D.C.)
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Molecular Epidemiology of Pasteurella multocida Associated with Bovine Respiratory Disease Outbreaks. Animals (Basel) 2022; 13:ani13010075. [PMID: 36611685 PMCID: PMC9817976 DOI: 10.3390/ani13010075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/14/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
Studies that characterize bovine respiratory disease (BRD)-associated Pasteurella multocida isolates are scarce compared with research on isolates from other hosts and clinical backgrounds. In the present study, 170 P. multocida isolates from 125 BRD outbreaks were characterized by capsular and LPS typing as well as by virulotyping. Three capsular types (A, B, F) and three LPS genotypes (L2, L3, L6) were identified. Capsular and LPS typing revealed a very low genetic diversity (GD = 0.02) among P. multocida, with most isolates belonging to genotype A:L3 (97.6%). Virulotyping identified seven virulence-associated gene profiles, with two profiles including 95.9% of the isolates. A subset of isolates was further characterized by MLST and PFGE. The sequence types ST79 and ST13 were the most frequently identified and were grouped into the same clonal complex (CC13), a result that supports the clonal population structure of BRD-associated P. multocida isolates. PFGE typing also revealed a low genetic diversity (GD = 0.18), detecting a single pattern in 62.5% of the outbreaks in which multiple isolates were analyzed. Overall, 85.2% of the isolates belonged to pulsotypes with at least 80% genetic similarity, consistent with a clonal population structure observed by MLST analysis and corroborating the genetic relatedness of most P. multocida isolates associated with BRD in cattle.
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Wang J, Sun S, Chen Y, Chen D, Sang L, Xie X. Pathogenic and genomic characterisation of a rabbit sourced Pasteurella multocida serogroup F isolate s4. BMC Vet Res 2022; 18:288. [PMID: 35869529 PMCID: PMC9308332 DOI: 10.1186/s12917-022-03381-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 07/12/2022] [Indexed: 12/02/2022] Open
Abstract
Background Pasteurella multocida is one of the most significant pathogens for a number of animals. In rabbits, the infection is generally associated with the P. multocida serogroups A and D, and the knowledge about the serogroup F is limited. In the present study, a P. multocida serogroup F isolate designated s4 was recovered from the lungs of rabbits died of respiratory disease in Fujian, in the southeast of China. The pathogenicity and genomic features of the s4 were then determined. Results The serotype and sequence type of s4 were F:L3 and ST12, respectively. The s4 was pathogenic for rabbits, but it was a low virulent strain comparing to the previously reported highly pathogenic P. multocida serogroup F strains J-4103, C21724H3km7, P-4218 and HN07. The whole genome of the s4 was then sequenced to understand the genomic basis for pathogenicity. Particularly, a large-sized fragment of approximate 275 kb in length was truncated from the chromosome to form a plasmid. Moreover, the in-frame deletion of natC and N-terminal redundance of gatF would resulted in the production of a mutant L3 outer core structure that was distinct from those of the other P. multocida strains belonging to the lipopolysaccharide genotype L3. We deduced that these features detected in the genome of s4 might impair the pathogenicity of the bacterium. Conclusions This study evaluated the pathogenicity and determined the genomic features of the rabbit sourced P. multocida serogroup F isolate s4, the observations and findings would helpful for the understanding of the pathogenicity variability and genetic diversity of P. multocida. Supplementary Information The online version contains supplementary material available at 10.1186/s12917-022-03381-7.
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Ujvári B, Magyar T. Investigation of Macrolide Resistance Genotypes of Pasteurella multocida Isolates from Cattle and Small Ruminants. Microb Drug Resist 2022; 28:941-947. [PMID: 35969373 DOI: 10.1089/mdr.2022.0010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Macrolides are commonly used to control respiratory tract infections in ruminants, but the susceptibility of Pasteurella multocida strains has shown a decrease to macrolide antibiotics in the last decade. In this work we assessed the prevalence of macrolide resistance of 100 P. multocida isolates from ruminant hosts and studied the resistance genotypes with newly designed PCRs. Susceptibility to erythromycin and tilmicosin was tested using minimal inhibitory concentration (MIC) test strips. A newly designed PCR was used for the detection of macAB genes, and a PCR plus restriction enzyme-based technique was developed for detecting a 23S rRNA gene mutation at position 2059. Five bovine isolates with notably increased MICs (≥256 μg/mL for erythromycin and ≥32 μg/mL for tilmicosin) carried resistance genes msr(E) and mph(E) or the A2059G point mutation in the 23S rRNA gene. Over 73% strains from small ruminants and all bovine isolates were MacAB PCR positive. Bovine strains were less sensitive to macrolide antibiotics than isolates from small ruminants, and an increase in the prevalence of macrolide resistance in bovine P. multocida isolates has also been observed over time.
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Affiliation(s)
- Barbara Ujvári
- Veterinary Medical Research Institute, Budapest, Hungary
| | - Tibor Magyar
- Veterinary Medical Research Institute, Budapest, Hungary
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Peng Z, Liu J, Liang W, Wang F, Wang L, Wang X, Hua L, Chen H, Wilson BA, Wang J, Wu B. Development of an Online Tool for Pasteurella multocida Genotyping and Genotypes of Pasteurella multocida From Different Hosts. Front Vet Sci 2022; 8:771157. [PMID: 34977209 PMCID: PMC8718711 DOI: 10.3389/fvets.2021.771157] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 11/30/2021] [Indexed: 11/13/2022] Open
Abstract
Pasteurella multocida is a versatile zoonotic pathogen. Multiple systems have been applied to type P. multocida from different diseases in different hosts. Recently, we found that assigning P. multocida strains by combining their capsular, lipopolysaccharide, and MLST genotypes (marked as capsular: lipopolysaccharide: MLST genotype) could help address the biological characteristics of P. multocida circulation in different hosts. However, there is still lack of a rapid and efficient tool to diagnose P. multocida according to this system. Here, we developed an intelligent genotyping platform PmGT for P. multocida strains according to their whole genome sequences using the web 2.0 technologies. By using PmGT, we determined capsular genotypes, LPS genotypes, and MLST genotypes as well as the main virulence factor genes (VFGs) of P. multocida isolates from different host species based on their whole genome sequences published on NCBI. The results revealed a closer association between the genotypes and pasteurellosis rather than between genotypes and host species. With the advent of high-quality, inexpensive DNA sequencing, PmGT represents a more efficient tool for P. multocida diagnosis in both epidemiological studies and clinical settings.
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Affiliation(s)
- Zhong Peng
- State Key Laboratory of Agricultural Microbiology, The Cooperative Innovation Center for Sustainable Pig Production, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Junyang Liu
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, China
| | - Wan Liang
- State Key Laboratory of Agricultural Microbiology, The Cooperative Innovation Center for Sustainable Pig Production, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.,Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Animal Husbandry and Veterinary Institute, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Fei Wang
- State Key Laboratory of Agricultural Microbiology, The Cooperative Innovation Center for Sustainable Pig Production, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Li Wang
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, China
| | - Xueying Wang
- State Key Laboratory of Agricultural Microbiology, The Cooperative Innovation Center for Sustainable Pig Production, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Lin Hua
- State Key Laboratory of Agricultural Microbiology, The Cooperative Innovation Center for Sustainable Pig Production, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Huanchun Chen
- State Key Laboratory of Agricultural Microbiology, The Cooperative Innovation Center for Sustainable Pig Production, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Brenda A Wilson
- Department of Microbiology, School of Molecular and Cellular Biology, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Jia Wang
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, China
| | - Bin Wu
- State Key Laboratory of Agricultural Microbiology, The Cooperative Innovation Center for Sustainable Pig Production, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
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Saha O, Islam MR, Rahman MS, Hoque MN, Hossain MA, Sultana M. First report from Bangladesh on genetic diversity of multidrug-resistant Pasteurella multocida type B:2 in fowl cholera. Vet World 2021; 14:2527-2542. [PMID: 34840474 PMCID: PMC8613801 DOI: 10.14202/vetworld.2021.2527-2542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 08/13/2021] [Indexed: 01/05/2023] Open
Abstract
Background and Aim: Fowl cholera (FC) caused by Pasteurella multocida is a highly contagious bacterial disease of global importance for poultry production. The severity and incidence of FC caused by P. multocida may vary considerably depending on several factors associated with the host (including species and age of infected birds), the environment, and the bacterial strain. This study aimed to investigate the genetic diversity of multidrug-resistant P. multocida strains isolated from FC outbreaks in laying hens from commercial farms of Bangladesh. Materials and Methods: We collected 57 samples of suspected FC, including 36 live and 21 dead laying hens. P. multocida isolates were characterized by biochemical and molecular-biological methods. Results: Twenty-two strains of P. multocida were isolated from these samples through phenotypic and genotypic characterization. The strains were grouped into two distinct random amplification of polymorphic DNA (RAPD) biotypes harboring a range of pathogenic genes; exbB, ompH, ptfA, nanB, sodC, and hgbA. In this study, 90.90% and 81.82% P. multocida strains were multidrug-resistant and biofilm formers, respectively. Whole-genome sequencing of the two representative RAPD phylotypes confirmed as P. multocida type B: L2:ST122, harboring a number of virulence factors-associated genes (VFGs), and antimicrobial resistance (AMR) genes (ARGs). In addition, pan-genome analysis revealed 90 unique genes in the genomes of P. multocida predicted to be associated with versatile metabolic functions, pathogenicity, virulence, and AMR. Conclusion: This is first-ever report on the association of P. multocida genotype B: L2:ST122 and related VFGs and ARGs in the pathogenesis of FC in laying hens. This study also provides a genetic context for future researches on the evolutionary diversity of P. multocida strains and their host adaptation.
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Affiliation(s)
- Otun Saha
- Department of Microbiology, University of Dhaka, Dhaka-1000, Bangladesh
| | - M Rafiul Islam
- Department of Microbiology, University of Dhaka, Dhaka-1000, Bangladesh
| | - M Shaminur Rahman
- Department of Microbiology, University of Dhaka, Dhaka-1000, Bangladesh
| | - M Nazmul Hoque
- Department of Microbiology, University of Dhaka, Dhaka-1000, Bangladesh.,Department of Gynecology, Obstetrics and Reproductive Health, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh
| | - M Anwar Hossain
- Department of Microbiology, University of Dhaka, Dhaka-1000, Bangladesh.,Vice-Chancellor, Jashore University of Science and Technology, Jashore-7408, Bangladesh
| | - Munawar Sultana
- Department of Microbiology, University of Dhaka, Dhaka-1000, Bangladesh
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Xiao J, Li Y, Hu Z, Zhang Y, Chang YF, Zhou Q, Yan Z, Zhang X, Chen L, Li W, Xie Z, Xie Q. Characterization of Pasteurella multocida isolated from ducks in China from 2017 to 2019. Microb Pathog 2021; 160:105196. [PMID: 34534643 DOI: 10.1016/j.micpath.2021.105196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 09/11/2021] [Accepted: 09/12/2021] [Indexed: 02/02/2023]
Abstract
Pasteurella multocida, an important gram-negative pathogen that mainly inhibits the upper respiratory tracts of domestic and wild animals such as chicken, duck, cattle and pig, which can cause cholera fowl, haemorrhagic septicaemia and infectious pneumonia. Currently, the prevalence and infection of P.multocida is still one of the most serious threats to the poultry industry in China, but studies on its characteristics are still insufficient. Here, this study was conducted to isolate and identify P.multocida in infected ducks and determined the leading serotypes and epidemiology of the diseases this pathogen causes. Results indicated that all the isolates were positive for KMT1 gene and the PCR amplified products were approximately 460 bp, demonstrating that these strains were all P.multocida. Moreover, all the isolated strains were identified as capsular type A and lipopolysaccharide type L1. Virulence factor identification results revealed that all strains possessed genes related to pili, adhesin, iron metabolism and uptake. In contrast, toxin coding gene (toxA) and sialidase encodes genes (nan B and nan H) were not detected in any isolates. The drug susceptibility results indicated that all the isolates were resistant to Lincomycin, Chloramphenicol, Clindamycin and Oxacillin but were sensitive to Ceftriaxone and Cefalotin. The animal experiments were also performed to further determine the pathogenicity of these isolated strains. Animal experiment revealed that the liver, kidney, and heart of infected ducks were swollen and had bleeding spots. We also observed hepatocyte hypertrophy, hepatic sinus congestion and single-cell infiltration in infected ducks through H&E staining. In summary, this study demonstrated that all the isolated strains belong to capsular A and lipopolysaccharide type L1 P.multocida, but their virulence factors, drug resistance and pathogenicity were different.
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Affiliation(s)
- Junfang Xiao
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Yajuan Li
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Zezhong Hu
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Yukun Zhang
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Yung-Fu Chang
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Qingfeng Zhou
- Research Institute, Wen's Food Group Co., LTD, Yunfu, China
| | - Zhuanqiang Yan
- Research Institute, Wen's Food Group Co., LTD, Yunfu, China
| | - Xinheng Zhang
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Liyi Chen
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Wenxue Li
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Zi Xie
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Qingmei Xie
- College of Animal Science, South China Agricultural University, Guangzhou, China.
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Genomic Analysis of Pasteurella atlantica Provides Insight on Its Virulence Factors and Phylogeny and Highlights the Potential of Reverse Vaccinology in Aquaculture. Microorganisms 2021; 9:microorganisms9061215. [PMID: 34199775 PMCID: PMC8226905 DOI: 10.3390/microorganisms9061215] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 05/21/2021] [Accepted: 06/01/2021] [Indexed: 12/20/2022] Open
Abstract
Pasteurellosis in farmed lumpsuckers, Cyclopterus lumpus, has emerged as a serious disease in Norwegian aquaculture in recent years. Genomic characterization of the causative agent is essential in understanding the biology of the bacteria involved and in devising an efficient preventive strategy. The genomes of two clinical Pasteurella atlantica isolates were sequenced (≈2.3 Mbp), and phylogenetic analysis confirmed their position as a novel species within the Pasteurellaceae. In silico analyses revealed 11 genomic islands and 5 prophages, highlighting the potential of mobile elements as driving forces in the evolution of this species. The previously documented pathogenicity of P. atlantica is strongly supported by the current study, and 17 target genes were recognized as putative primary drivers of pathogenicity. The expression level of a predicted vaccine target, an uncharacterized adhesin protein, was significantly increased in both broth culture and following the exposure of P. atlantica to lumpsucker head kidney leucocytes. Based on in silico and functional analyses, the strongest gene target candidates will be prioritized in future vaccine development efforts to prevent future pasteurellosis outbreaks.
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Gharib Mombeni E, Gharibi D, Ghorbanpoor M, Jabbari AR, Cid D. Toxigenic and non-toxigenic Pasteurella multocida genotypes, based on capsular, LPS, and virulence profile typing, associated with pneumonic pasteurellosis in Iran. Vet Microbiol 2021; 257:109077. [PMID: 33901804 DOI: 10.1016/j.vetmic.2021.109077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 04/18/2021] [Indexed: 11/17/2022]
Abstract
Pasteurella multocida is an important cause of pneumonic pasteurellosis in small ruminants. Its prevalence was investigated in 349 pneumonic lungs from sheep (n = 197) and goats (n = 152), and genotypes of isolates were determined by capsular and lipopolysaccharide (LPS) typing as well as by virulotyping based on the detection of 12 virulence-associated genes. P. multocida was isolated from 29.4 % of sheep lungs and 13.8 % of goat lungs. A (78.5 %) and D (21.5 %) capsular types, as well as L3 (41.8 %) and L6 (57.0 %) LPS genotypes, were detected, with the A:L6 genotype being the most prevalent in both sheep (59.6 %) and goat (52.4 %) isolates. A total of 19 virulence profiles (VP) were detected, seven non-toxigenic and 12 toxigenic, which correlated with the capsular-LPS genotype. All isolates of each VP belonged to the same LPS and capsular genotype, except for one isolate of VP1. The diversity in VP was higher among toxigenic (0.29) than non-toxigenic (0.18) isolates. Moreover, the toxigenic VPs showed more diversity in their capsular-LPS genotypes, with the two main toxigenic VPs belonging to genotypes D:L3 (VP2) and A:L3 (VP3). Therefore, the abundance of toxigenic isolates among sheep and goat isolates does not seem to correspond to the expansion of a more virulent lineage associated with pneumonic pasteurellosis in small ruminants. The most prevalent genotypes among sheep isolates were the non-toxigenic VP1:A:L6 (41.4 %) and the toxigenic VP3:A:L3 (17.2 %) genotypes, whereas the most prevalent among goat isolates were the toxigenic VP2:D:L3 (33.3 %) and the non-toxigenic VP1:A:L6 (14.3 %) and VP4:A:L6 (14.3 %) genotypes. These prevalent toxigenic and non-toxigenic genotypes seem to be epidemiologically relevant in pneumonic pasteurellosis of small ruminants.
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Affiliation(s)
- Ehsan Gharib Mombeni
- Department of Pathobiology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Darioush Gharibi
- Department of Pathobiology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Masoud Ghorbanpoor
- Department of Pathobiology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Ahmad Reza Jabbari
- Department of Microbiology, Razi Vaccine and Serum Research Institute, Karaj, Iran
| | - Dolores Cid
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, Madrid, Spain
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Smith E, Miller E, Aguayo JM, Figueroa CF, Nezworski J, Studniski M, Wileman B, Johnson T. Genomic diversity and molecular epidemiology of Pasteurella multocida. PLoS One 2021; 16:e0249138. [PMID: 33822782 PMCID: PMC8023445 DOI: 10.1371/journal.pone.0249138] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 03/11/2021] [Indexed: 12/23/2022] Open
Abstract
Pasteurella multocida is a bacterial pathogen with the ability to infect a multitude of hosts including humans, companion animals, livestock, and wildlife. This study used bioinformatic approaches to explore the genomic diversity of 656 P. multocida isolates and epidemiological associations between host factors and specific genotypes. Isolates included in this study originated from a variety of hosts, including poultry, cattle, swine, rabbits, rodents, and humans, from five different continents. Multi-locus sequence typing identified 69 different sequence types. In-silico methodology for determining capsular serogroup was developed, validated, and applied to all genome sequences, whereby capsular serogroups A, B, D, and F were found. Whole genome phylogeny was constructed from 237,670 core single nucleotide variants (SNVs) and demonstrated an overall lack of host or capsular serogroup specificity, with the exception of isolates from bovine sources. Specific SNVs within the srlB gene were identified in P. multocida subsp. septica genomes, representing specific mutations that may be useful for differentiating one of the three known subspecies. Significant associations were identified between capsular serogroup and virulence factors, including capsular serogroup A and OmpH1, OmpH3, PlpE, and PfhB1; capsular serogroup B and HgbA and PtfA; and capsular serogroup F and PtfA and PlpP. Various mobile genetic elements were identified including those similar to ICEPmu1, ICEhin1056, and IncQ1 plasmids, all of which harbored multiple antimicrobial resistance-encoding genes. Additional analyses were performed on a subset of 99 isolates obtained from turkeys during fowl cholera outbreaks from a single company which revealed that multiple strains of P. multocida were circulating during the outbreak, instead of a single, highly virulent clone. This study further demonstrates the extensive genomic diversity of P. multocida, provides epidemiological context to the various genotyping schemes that have traditionally been used for differentiating isolates, and introduces additional tools for P. multocida molecular typing.
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Affiliation(s)
- Emily Smith
- Department of Veterinary and Biomedical Sciences, University of Minnesota, Saint Paul, MN, United States of America
| | - Elizabeth Miller
- Department of Veterinary and Biomedical Sciences, University of Minnesota, Saint Paul, MN, United States of America
| | - Jeannette Munoz Aguayo
- Mid-Central Research and Outreach Center, University of Minnesota, Willmar, Minnesota, United States of America
| | - Cristian Flores Figueroa
- Mid-Central Research and Outreach Center, University of Minnesota, Willmar, Minnesota, United States of America
| | - Jill Nezworski
- Blue House Veterinary LLC, Buffalo Lake, Minnesota, United States of America
| | | | - Ben Wileman
- Select Genetics, Willmar, MN, United States of America
| | - Timothy Johnson
- Department of Veterinary and Biomedical Sciences, University of Minnesota, Saint Paul, MN, United States of America
- Mid-Central Research and Outreach Center, University of Minnesota, Willmar, Minnesota, United States of America
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Prajapati A, Chanda MM, Yogisharadhya R, Parveen A, Ummer J, Dhayalan A, Mohanty NN, Shivachandra SB. Comparative genetic diversity analysis based on virulence and repetitive genes profiling of circulating Pasteurella multocida isolates from animal hosts. INFECTION GENETICS AND EVOLUTION 2020; 85:104564. [PMID: 32979548 DOI: 10.1016/j.meegid.2020.104564] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 09/14/2020] [Accepted: 09/17/2020] [Indexed: 12/21/2022]
Abstract
Virulence associated and/or housekeeping/repetitive genes either in single or multiple copies are being extensively targeted for bacterial pathogen detection and differentiation in epidemiological studies. In the present study, isolation of Pasteurella multocida from different animals and their genetic profiling based on the capsular types, virulence and repetitive elements (ERIC/REP) were carried out. A total 345 clinical samples from apparently healthy and diseased (pneumonic, septicaemia) animals (sheep, goat, pig, cattle, buffalo and rabbits) from different geographical regions of Karnataka, Uttar Pradesh, Mizoram and Assam states of India were screened. A total of 32% of the samples were found positive, of which 41 P. multocida isolates recovered. Virulence profiling of isolates indicated that omp87, ompA, ptfA, sodA, sodC, nanB, fur and exbB were present in 100% of isolates. Whereas, prevalence of other genes were; nanH (90%), ompH (71%), pfhA (63%), plpB (80%), hsf-1 (12%), hsf-2 (37%), pmHAS (78%), toxA (73%), hgbA (37%), hgbB (81%), tbpA (78%) and fimA (98%), among isolates. There was no influence of host or place on prevalence of virulence genes when assessed by fitting a Hierarchial Bayesian ordinal regression model. There was correlation (positive and negative) between broad groups of virulence genes. Both repetitive gene profiles (ERIC and REP) generated multiple amplicons (~200 to ~4000 bp). Cluster analysis with ERIC profiles revealed 5 clusters and 3 non- typable isolates with higher discriminatory power (D = 0.7991) than the REP-PCR profiles (D = 00.734) which revealed 4 clusters and 6 non- typable isolates. The results showed that a considerable level of genetic diversity exists among circulating P. multocida isolates despite belonging to the same geographical origin. The genetic diversity or clustering based on either virulence or repetitive elements among isolates could be largely driven by multiple factors acting together which lead to manifestations of particular disease symptoms.
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Affiliation(s)
- Awadhesh Prajapati
- ICAR-National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Yelahanka, Bengaluru 560064, Karnataka, India
| | - Mohammed Mudassar Chanda
- ICAR-National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Yelahanka, Bengaluru 560064, Karnataka, India
| | - Revanaiah Yogisharadhya
- ICAR-National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Yelahanka, Bengaluru 560064, Karnataka, India
| | - Assma Parveen
- ICAR-National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Yelahanka, Bengaluru 560064, Karnataka, India
| | - Janofer Ummer
- ICAR-National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Yelahanka, Bengaluru 560064, Karnataka, India
| | - Arul Dhayalan
- ICAR-National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Yelahanka, Bengaluru 560064, Karnataka, India
| | - Nihar Nalini Mohanty
- CCS-National Institute of Animal Health (NIAH), Baghpat 250609, Uttar Pradesh (UP), India
| | - Sathish Bhadravati Shivachandra
- ICAR-National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Yelahanka, Bengaluru 560064, Karnataka, India.
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Cid D, Pinto C, Domínguez L, Vela AI, Fernández-Garayzábal JF. Strength of association between isolation of Pasteurella multocida and consolidation lesions in ovine pneumonic pasteurellosis. Vet Microbiol 2020; 248:108823. [PMID: 32891951 DOI: 10.1016/j.vetmic.2020.108823] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 08/03/2020] [Indexed: 02/07/2023]
Abstract
This study investigated the association of Pasteurella multocida isolation and the molecular characteristics of the isolates with the presence of pneumonic lesions in lambs at slaughter to assess its importance as a causative agent of pneumonic pasteurellosis compared with Mannheimia haemolytica. P. multocida was isolated from the 13.9% and 2.7%, and M. haemolytica from the 36.4% and 26.8%, of lungs with and without lesions, respectively (P < 0.05). Both microorganisms were frequently coisolated (23.2% and 12.5% from lungs with and without lesions, respectively). Isolation of P. multocida alone exhibited greater strength of association with pneumonic lesions (OR 11.4; 95% CI 3.2-40.6) than that exhibited by M. haemolytica alone (OR 3.0; 95% CI 1.6-5.4). Cluster analysis grouped the lungs into four clusters characterized by the isolation of M. haemolytica or P. multocida alone (clusters 1 and 4), coisolation of both microorganisms (cluster 3), and isolation of neither (cluster 2). Cluster 4 lungs exhibited higher frequencies of pneumonic lesions (87.5%) and severe (20.8%) and moderate (25.0%) lesions. Lungs coinfected with both pathogens (cluster 3) did not exhibit a higher frequency of severe and moderate consolidation lesions (6.1% and 14.3%, respectively), suggesting that P. multocida and M. haemolytica do not act synergically to cause more severe pneumonic infections. The greater strength of association of P. multocida isolation with pneumonic lesions together with the higher severity of the lesions caused could indicate a greater role played by this pathogen in the aetiopathogenesis of pneumonic pasteurellosis in sheep than is commonly assumed.
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Affiliation(s)
- D Cid
- Animal Health Department, Veterinary School, Complutense University, Av. Puerta de Hierro, s/n, 28040 Madrid, Spain.
| | - C Pinto
- Animal Health Department, Veterinary School, Complutense University, Av. Puerta de Hierro, s/n, 28040 Madrid, Spain; London School of Hygiene and Tropical Medicine, University of London, London, United Kingdom
| | - L Domínguez
- Animal Health Department, Veterinary School, Complutense University, Av. Puerta de Hierro, s/n, 28040 Madrid, Spain; VISAVET Health Surveillance Centre. Complutense University, Av. Puerta de Hierro, s/n, 28040 Madrid, Spain
| | - A I Vela
- Animal Health Department, Veterinary School, Complutense University, Av. Puerta de Hierro, s/n, 28040 Madrid, Spain; VISAVET Health Surveillance Centre. Complutense University, Av. Puerta de Hierro, s/n, 28040 Madrid, Spain
| | - J F Fernández-Garayzábal
- Animal Health Department, Veterinary School, Complutense University, Av. Puerta de Hierro, s/n, 28040 Madrid, Spain; VISAVET Health Surveillance Centre. Complutense University, Av. Puerta de Hierro, s/n, 28040 Madrid, Spain
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Hurtado R, Maturrano L, Azevedo V, Aburjaile F. Pathogenomics insights for understanding Pasteurella multocida adaptation. Int J Med Microbiol 2020; 310:151417. [PMID: 32276876 DOI: 10.1016/j.ijmm.2020.151417] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 03/01/2020] [Accepted: 03/19/2020] [Indexed: 12/16/2022] Open
Abstract
Pasteurella multocida is an important veterinary pathogen able to infect a wide range of animals in a broad spectrum of diseases. P. multocida is a complex microorganism in relation to its genomic flexibility, host adaptation and pathogenesis. Epidemiological analysis based on multilocus sequence typing, serotyping, genotyping, association with virulence genes and single nucleotide polymorphisms (SNPs), enables assessment of intraspecies diversity, phylogenetic and strain-specific relationships associated with host predilection or disease. A high number of sequenced genomes provides us a more accurate genomic and epidemiological interpretation to determine whether certain lineages can infect a host or produce disease. Comparative genomic analysis and pan-genomic approaches have revealed a flexible genome for hosting mobile genetic elements (MGEs) and therefore significant variation in gene content. Moreover, it was possible to find lineage-specific MGEs from the same niche, showing acquisition probably due to an evolutionary convergence event or to a genetic group with infective capacity. Furthermore, diversification selection analysis exhibits proteins exposed on the surface subject to selection pressures with an interstrain heterogeneity related to their ability to adapt. This article is the first review describing the genomic relationship to elucidate the diversity and evolution of P. multocida.
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Affiliation(s)
- Raquel Hurtado
- Laboratory of Cellular and Molecular Genetics, Federal University of Minas Gerais, Belo Horizonte, 31270-901, Minas Gerais, Brazil; Laboratory of Molecular Biology and Genetics, Veterinary Medicine Faculty, San Marcos University, Lima, Peru
| | - Lenin Maturrano
- Laboratory of Molecular Biology and Genetics, Veterinary Medicine Faculty, San Marcos University, Lima, Peru
| | - Vasco Azevedo
- Laboratory of Cellular and Molecular Genetics, Federal University of Minas Gerais, Belo Horizonte, 31270-901, Minas Gerais, Brazil
| | - Flávia Aburjaile
- Laboratory of Cellular and Molecular Genetics, Federal University of Minas Gerais, Belo Horizonte, 31270-901, Minas Gerais, Brazil; Laboratory of Plant Genetics and Biotechnology, Federal University of Pernambuco, Recife, 50670-901, Pernambuco, Brazil.
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15
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Cid D, Fernández-Garayzábal JF, Pinto C, Domínguez L, Vela AI. Antimicrobial susceptibility of Pasteurella multocida isolated from sheep and pigs in Spain - Short communication. Acta Vet Hung 2019; 67:489-498. [PMID: 31842595 DOI: 10.1556/004.2019.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Pasteurella multocida is responsible for economically important diseases in sheep and pigs. Antimicrobial susceptibility studies are essential for initiating rational and effective empirical therapy of P. multocida infections. In this study we investigated the antimicrobial susceptibility to 18 antimicrobial agents of 156 clinical isolates of P. multocida from sheep (n = 87) and pigs (n = 69) using the microdilution method. Both sheep and pig isolates exhibited low levels of resistance (≤ 15%) to ceftiofur, gentamicin, neomycin, spectinomycin, chlortetracycline, tulathromycin, florfenicol, danofloxacin, and enrofloxacin and trimethoprim/sulphamethoxazole, high resistance rates (> 15% up to 50%) to oxytetracycline, tilmicosin, and tiamulin, and very high resistance rates (> 50%) to tylosin tartrate, clindamycin, and sulphadimethoxine. However, sheep isolates exhibited significantly lower percentages of resistance and lower MIC90 values (P < 0.05) than pig isolates for most of the antimicrobials tested. In addition, sheep isolates exhibited also significantly lower phenotypic antimicrobial resistance diversity (8 resistotypes vs. 30 resistotypes). LAC-LIN-SUL-MAC was the resistotype most frequently detected in sheep (39.1%) and LIN-SUL-MAC in pig isolates (26.1%). The differences in susceptibility patterns could be influenced by the lower use of antimicrobials in the small ruminant industry compared with the pig farming industry.
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Affiliation(s)
- Dolores Cid
- 1Animal Health Department, Veterinary School, Universidad Complutense de Madrid, Av. Puerta de Hierro, s/n, 28040 Madrid, Spain
| | - José Francisco Fernández-Garayzábal
- 1Animal Health Department, Veterinary School, Universidad Complutense de Madrid, Av. Puerta de Hierro, s/n, 28040 Madrid, Spain
- 2Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense, Madrid, Spain
| | - Chris Pinto
- 1Animal Health Department, Veterinary School, Universidad Complutense de Madrid, Av. Puerta de Hierro, s/n, 28040 Madrid, Spain
- 3London School of Hygiene and Tropical Medicine/Royal Veterinary College, University of London, London, United Kingdom
| | - Lucas Domínguez
- 1Animal Health Department, Veterinary School, Universidad Complutense de Madrid, Av. Puerta de Hierro, s/n, 28040 Madrid, Spain
- 2Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense, Madrid, Spain
| | - Ana Isabel Vela
- 1Animal Health Department, Veterinary School, Universidad Complutense de Madrid, Av. Puerta de Hierro, s/n, 28040 Madrid, Spain
- 2Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense, Madrid, Spain
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16
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Abstract
Pasteurella multocida is a highly versatile pathogen capable of causing infections in a wide range of domestic and wild animals as well as in humans and nonhuman primates. Despite over 135 years of research, the molecular basis for the myriad manifestations of P. multocida pathogenesis and the determinants of P. multocida phylogeny remain poorly defined. The current availability of multiple P. multocida genome sequences now makes it possible to delve into the underlying genetic mechanisms of P. multocida fitness and virulence. Using whole-genome sequences, the genotypes, including the capsular genotypes, lipopolysaccharide (LPS) genotypes, and multilocus sequence types, as well as virulence factor-encoding genes of P. multocida isolates from different clinical presentations can be characterized rapidly and accurately. Putative genetic factors that contribute to virulence, fitness, host specificity, and disease predilection can also be identified through comparative genome analysis of different P. multocida isolates. However, although some knowledge about genotypes, fitness, and pathogenesis has been gained from the recent whole-genome sequencing and comparative analysis studies of P. multocida, there is still a long way to go before we fully understand the pathogenic mechanisms of this important zoonotic pathogen. The quality of several available genome sequences is low, as they are assemblies with relatively low coverage, and genomes of P. multocida isolates from some uncommon host species are still limited or lacking. Here, we review recent advances, as well as continuing knowledge gaps, in our understanding of determinants contributing to virulence, fitness, host specificity, disease predilection, and phylogeny of P. multocida.
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Bourély C, Cazeau G, Jouy E, Haenni M, Madec JY, Jarrige N, Leblond A, Gay E. Antimicrobial resistance of Pasteurella multocida isolated from diseased food-producing animals and pets. Vet Microbiol 2019; 235:280-284. [PMID: 31383313 DOI: 10.1016/j.vetmic.2019.07.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 07/11/2019] [Accepted: 07/19/2019] [Indexed: 12/29/2022]
Abstract
Surveillance of Pasteurella multocida resistance in food-producing animals is essential to guide the first-line treatment of respiratory diseases and to limit economic losses. Since Pasteurella are the most common bacteria isolated from dog and cat bites, this surveillance is also needed to guide treatment in humans in case of bites. The aim of this study was to characterize the phenotypic resistance of P. multocida strains isolated from respiratory infections in animals, including both food-producing animals and pets. Data collected between 2012 and 2017 by the French national surveillance network for antimicrobial resistance referred to as RESAPATH were analyzed. The proportions of resistance to antimicrobials of relevance in veterinary and human medicines were estimated for each animal species. For cattle, resistance trends over the period were investigated using non-linear analysis applied to time-series. In total, 5356 P. multocida isolates were analyzed. Proportions of resistance of P. multocida were almost all below 20% over the period, and, more precisely, all resistance proportions were below 10% for rabbits, sheep and dogs. The highest resistance proportions to enrofloxacin were identified for cattle (4.5%) and dogs (5.2%). Despite its frequent use in livestock, resistance to florfenicol was less than 1% in P. multocida strains, regardless of the animal species considered. Time series analyses revealed continuous increases in resistance to tetracycline, tilmicosin, flumequine and fluoroquinolones in P. multocida strains isolated from cattle. These trends contrast with the decrease in use of antibiotics in cattle in France and with the decrease in resistance observed in E. coli isolated from diseased cattle.
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Affiliation(s)
- Clémence Bourély
- École Nationale des Services Vétérinaires, VetAgro Sup, 69280 Marcy l'Étoile, France; Université de Lyon, ANSES, Laboratoire de Lyon, Unité Épidémiologie et appui à la surveillance, 31 avenue Tony Garnier, 69007 Lyon, France; EPIA, UMR Epidémiologie des Maladies Animales et Zoonotiques, INRA, VetAgro Sup, Université de Lyon, 69280, Marcy L'Etoile, France
| | - Géraldine Cazeau
- Université de Lyon, ANSES, Laboratoire de Lyon, Unité Épidémiologie et appui à la surveillance, 31 avenue Tony Garnier, 69007 Lyon, France
| | - Eric Jouy
- ANSES, Laboratoire de Ploufragan-Plouzané-Niort, Unité Mycoplasmologie, Bactériologie et Antibiorésistance, Université Bretagne Loire, Technopôle Saint-Brieuc Armor, 22440 Ploufragan, France
| | - Marisa Haenni
- Université de Lyon, ANSES, Laboratoire de Lyon, Unité Antibiorésistance et Virulence Bactériennes, 31 avenue Tony Garnier, Lyon 69007, France
| | - Jean-Yves Madec
- Université de Lyon, ANSES, Laboratoire de Lyon, Unité Antibiorésistance et Virulence Bactériennes, 31 avenue Tony Garnier, Lyon 69007, France
| | - Nathalie Jarrige
- Université de Lyon, ANSES, Laboratoire de Lyon, Unité Épidémiologie et appui à la surveillance, 31 avenue Tony Garnier, 69007 Lyon, France
| | - Agnès Leblond
- EPIA, UMR Epidémiologie des Maladies Animales et Zoonotiques, INRA, VetAgro Sup, Université de Lyon, 69280, Marcy L'Etoile, France
| | - Emilie Gay
- Université de Lyon, ANSES, Laboratoire de Lyon, Unité Épidémiologie et appui à la surveillance, 31 avenue Tony Garnier, 69007 Lyon, France.
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Ujvári B, Makrai L, Magyar T. Virulence gene profiling and ompA sequence analysis of Pasteurella multocida and their correlation with host species. Vet Microbiol 2019; 233:190-195. [PMID: 31176407 DOI: 10.1016/j.vetmic.2019.05.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/02/2019] [Accepted: 05/03/2019] [Indexed: 11/25/2022]
Abstract
This study describes the prevalence of capsule biosynthesis genes, LPS genotypes, virulence associated genes and the analysis of the outer membrane protein (ompA) sequence of Pasteurella multocida isolates (n = 180) from different locations in Hungary, from various host species, including humans. When combining capsular types with LPS genotypes, eight capsule - LPS genotype combinations were detected. A: L3 was the most dominant in bovine and porcine isolates, A: L1 in feline and human isolates, while D: L3 was the most common among strains from small ruminants. The P. multocida toxin encoding gene toxA was highly prevalent among small ruminant and porcine strains, while in human, feline and bovine isolates it could not be detected. Combination of the tested virulence associated genes (hgbA, nanH, hgbB, tbpA, pfhA, hsf1, hsf2, tadD, ptfA) classified our P. multocida isolates into 13 different virulence gene profiles (VGPs). These VGPs showed an association with host species. Analysis of the ompA sequence data confirmed this distribution by host species, which may indicate that host adaptation is taking place. The typing scheme used in this study may be useful in epidemiological investigations.
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Affiliation(s)
- B Ujvári
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, 1581 Budapest, Hungary
| | - L Makrai
- Department of Microbiology and Infectious Diseases, University of Veterinary Medicine, Budapest, Hungary
| | - T Magyar
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, 1581 Budapest, Hungary.
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Oh YH, Moon DC, Lee YJ, Hyun BH, Lim SK. Genetic and phenotypic characterization of tetracycline-resistant Pasteurella multocida isolated from pigs. Vet Microbiol 2019; 233:159-163. [PMID: 31176403 DOI: 10.1016/j.vetmic.2019.05.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 04/23/2019] [Accepted: 05/01/2019] [Indexed: 10/26/2022]
Abstract
Pasteurella multocida causes single or complex respiratory disease in pigs. Although antimicrobial therapy is the most effective treatment for porcine respiratory disease, P. multocida shows increased antimicrobial resistance in Korea. Therefore, we aimed to investigate the phenotypic and genotypic characterization of tetracycline-resistant P. multocida. Thirty-seven of 454 P. multocida isolates from South Korea between 2010 and 2016 were selected. Four tet genes [tet(B) (78.4%), tet(H) (16.2%), tet(C) (5.4%), and tet(O) (2.7%)] were observed. This is the first report of tet(C) in P. multocida. Various virulence factors were observed in both tetracycline-resistant and -susceptible P. multocida isolates. Genes encoding pmHAS and pfhA were more prevalent in tetracycline-resistant than in tetracycline-susceptible isolates. Some virulence factors exhibited association with serogroups. tadD and sodA were common in serogroup A, while hsf-l was significantly associated with serogroup D (p < 0.01). Pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST) results showed the genetic diversity of tetracycline-resistant P. multocida. MLST showed six different sequence types (ST), with clonal complex 13 encompassing 56.8% of the strains. PFGE was more efficient in differentiating the isolates, and 29 PFGE patterns of the strains were observed. By combining these methods, identical STs and PFGE patterns were observed in isolates from different farms, suggesting that transmission of antimicrobial-resistant P. multocida strains between farms might occur in a geographically discrete population. In future, epidemiological approaches and development of effective vaccines should focus on the major clonal lineages carrying the important virulence factors and frequently observed resistance genes to prevent the transmission and control the disease.
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Affiliation(s)
- Yoon-Hee Oh
- Bacterial Disease Division, Animal and Plant Quarantine Agency, 177 Hyeksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Dong-Chan Moon
- Bacterial Disease Division, Animal and Plant Quarantine Agency, 177 Hyeksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Young Ju Lee
- Department of Public Health, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Bang-Hun Hyun
- Bacterial Disease Division, Animal and Plant Quarantine Agency, 177 Hyeksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Suk-Kyung Lim
- Bacterial Disease Division, Animal and Plant Quarantine Agency, 177 Hyeksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea.
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Cid D, García-Alvarez A, Domínguez L, Fernández-Garayzábal JF, Vela AI. Pasteurella multocida isolates associated with ovine pneumonia are toxigenic. Vet Microbiol 2019; 232:70-73. [PMID: 31030847 DOI: 10.1016/j.vetmic.2019.04.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 04/01/2019] [Accepted: 04/05/2019] [Indexed: 02/04/2023]
Abstract
The P. multocida toxin (PMT), a dermonecrotic protein encoded by the toxA gene, is the major virulence factor of capsular type D P. multocida strains causing progressive atrophic rhinitis (PAR) in pigs. A high frequency of P. multocida isolates harboring the toxA gene has been found among ovine pneumonic isolates, although the ability of these isolates to express PMT has never been examined. In this study we have investigated the ability of ovine toxA+ P. multocida isolates (n = 57) to express a functional toxin by detection of PMT toxin antigen using an ELISA test and its cytopathic effect in a Vero cell assay. PMT antigen was expressed in the great majority (54/57; 94.7%) of toxA+ isolates. Moreover, the 100% toxA+ ovine isolates analyzed produced a cytopathic effect in Vero cells within 24-48 h post-inoculation, identical to that described for porcine toxigenic P. multocida isolates. These results show for the first time that, in addition to isolates associated with PAR, isolates of P. multocida associated with pneumonia in sheep are also toxigenic. In addition, we found a total agreement (Kappa = 1; C.I. 0.75-1.25) between the detection of the toxA gene and the toxigenic capability of P. multocida isolates, indicating the PCR detection of toxA would be a suitable predictive marker of the toxigenic fitness of P. multocida.
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Affiliation(s)
- D Cid
- Animal Health Department, Veterinary School, Universidad Complutense de Madrid, Spain.
| | - A García-Alvarez
- Animal Health Department, Veterinary School, Universidad Complutense de Madrid, Spain
| | - L Domínguez
- Animal Health Department, Veterinary School, Universidad Complutense de Madrid, Spain; Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense, Madrid, Spain
| | - J F Fernández-Garayzábal
- Animal Health Department, Veterinary School, Universidad Complutense de Madrid, Spain; Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense, Madrid, Spain
| | - A I Vela
- Animal Health Department, Veterinary School, Universidad Complutense de Madrid, Spain; Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense, Madrid, Spain
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21
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Abreu F, Rodríguez-Lucas C, Rodicio MR, Vela AI, Fernández-Garayzábal JF, Leiva PS, Cuesta F, Cid D, Fernández J. Human Pasteurella multocida Infection with Likely Zoonotic Transmission from a Pet Dog, Spain. Emerg Infect Dis 2019; 24:1145-1146. [PMID: 29774848 PMCID: PMC6004854 DOI: 10.3201/eid2406.171998] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We report a case of urinary tract infection caused by an unusual genotype (sequence type 211) of Pasteurella multocida associated with human infection. Molecular genetic analysis of P. multocida isolates obtained from the human patient and his pet strongly suggests a zoonotic transmission of this bacterium.
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22
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Ujvári B, Weiczner R, Deim Z, Terhes G, Urbán E, Tóth AR, Magyar T. Characterization of Pasteurella multocida strains isolated from human infections. Comp Immunol Microbiol Infect Dis 2019; 63:37-43. [PMID: 30961816 DOI: 10.1016/j.cimid.2018.12.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 12/12/2018] [Accepted: 12/21/2018] [Indexed: 11/16/2022]
Abstract
Isolates of Pasteurella multocida recovered from infected humans (n = 15) were characterized by traditional and molecular microbiological methods and were compared with cat-derived strains (n = 5). The most prevalent subspecies among strains from human infections was P. multocida subsp. septica (80%), and nearly all isolates showed a similar combination of virulence-associated genes. MLST analysis classified the 20 P. multocida strains into 16 different sequence types, and we assigned 11 new sequence types (ST), however, only one of those (ST 334) was shared by two human and one cat isolates. P. multocida subsp. septica strains formed a distinct phylogenetic group within the species. The strains showed resistance to erythromycin, clindamycin and sulfamethoxazole, and with two exceptions, resistance to tilmicosin was also detected. Each strain was susceptible to ampicillin, streptomycin, gentamycin, tetracycline, doxycycline, cefazolin, cefpodoxime, chloramphenicol, florfenicol and enrofloxacin. Common characteristics (virulence profile and antibiotic sensitivity pattern) shared by strains isolated from humans and cats support the view that domestic cats may serve as a potential reservoir for P. multocida.
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Affiliation(s)
- B Ujvári
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, 1581 Budapest, Hungary
| | - R Weiczner
- Albert Szent-Györgyi Health Centre, Faculty of Medicine, University of Szeged, Tisza Lajos krt. 107, 6725 Szeged, Hungary
| | - Z Deim
- Department of Biotechnology, University of Szeged, Közép fasor 52, 6726 Szeged, Hungary
| | - G Terhes
- Faculty of Medicine, Institute of Clinical Microbiology, University of Szeged, Semmelweis u. 6, 6725 Szeged, Hungary
| | - E Urbán
- Faculty of Medicine, Institute of Clinical Microbiology, University of Szeged, Semmelweis u. 6, 6725 Szeged, Hungary
| | - A R Tóth
- Med-Forensic Bt., Ady Endre u. 26, 6762 Sándorfalva, Hungary
| | - T Magyar
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, 1581 Budapest, Hungary.
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23
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Peng Z, Liang W, Wang F, Xu Z, Xie Z, Lian Z, Hua L, Zhou R, Chen H, Wu B. Genetic and Phylogenetic Characteristics of Pasteurella multocida Isolates From Different Host Species. Front Microbiol 2018; 9:1408. [PMID: 29997608 PMCID: PMC6029419 DOI: 10.3389/fmicb.2018.01408] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 06/08/2018] [Indexed: 01/27/2023] Open
Abstract
Pasteurella multocida is a leading cause of respiratory diseases in many host species. To understand the genetic characteristics of P. multocida strains isolated from different host species, we sequenced the genomic DNA of P. multocida isolated from pigs and analyzed the genetic characteristics of strains from avian species, bovine species, pigs, and rabbits using whole genome sequence (WGS) data. Our results found that a capsular: lipopolysaccharide (LPS): multilocus sequence typing (MLST) genotype A: L1: ST129 (43.75%) was predominant in avian P. multocida; while genotypes B: L2: ST122 (60.00%) and A: L3: ST79 (30.00%) were predominate in bovine P. multocida; genotype D: L6: ST50 (37.50%) in porcine P. multocida; and genotype A: L3: ST9 (76.47%) in rabbit P. multocida. Comparative genomic analysis of P. multocida from different host species found that there are no genes in the P. multocida genome that are specific to any type of host. Phylogenetic analysis using either whole-genome single nucleotide polymorphisms (SNPs) or the set of SNPs present in all single-copy core genes across genomes showed that P. multocida strains with the same LPS genotype and MLST genotype were clustered together, suggesting the combining both the LPS and MLST typing schemes better explained the topology seen in the P. multocida phylogeny.
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Affiliation(s)
- Zhong Peng
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.,State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
| | - Wan Liang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.,State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China.,Hubei Key Laboratory of Animal Embryo and Molecular Breeding, Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Fei Wang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.,State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
| | - Zhuofei Xu
- Ecological Research Institute, School of Life Science, South China Normal University, Guangzhou, China.,Guangdong Magigene Biotechnology Co. Ltd., Guangzhou, China
| | - Zhihao Xie
- Guangdong Magigene Biotechnology Co. Ltd., Guangzhou, China
| | - Zhenghan Lian
- Guangdong Magigene Biotechnology Co. Ltd., Guangzhou, China
| | - Lin Hua
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.,State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
| | - Rui Zhou
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.,State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
| | - Huanchun Chen
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.,State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
| | - Bin Wu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.,State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
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Ovine Mannheimia haemolytica isolates from lungs with and without pneumonic lesions belong to similar genotypes. Vet Microbiol 2018; 219:80-86. [DOI: 10.1016/j.vetmic.2018.04.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 03/07/2018] [Accepted: 04/07/2018] [Indexed: 11/22/2022]
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25
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Li Z, Cheng F, Lan S, Guo J, Liu W, Li X, Luo Z, Zhang M, Wu J, Shi Y. Investigation of genetic diversity and epidemiological characteristics of Pasteurella multocida isolates from poultry in southwest China by population structure, multi-locus sequence typing and virulence-associated gene profile analysis. J Vet Med Sci 2018; 80:921-929. [PMID: 29695681 PMCID: PMC6021876 DOI: 10.1292/jvms.18-0049] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Fowl cholera caused by Pasteurella multocida has always been a disease
of global importance for poultry production. The aim of this study was to obtain more
information about the epidemiology of avian P. multocida infection in
southwest China and the genetic characteristics of clinical isolates. P.
multocida isolates were characterized by biochemical and molecular-biological
methods. The distributions of the capsular serogroups, the phenotypic antimicrobial
resistance profiles, lipopolysaccharide (LPS) genotyping and the presence of 19 virulence
genes were investigated in 45 isolates of P. multocida that were
associated with clinical disease in poultry. The genetic diversity of P.
multocida strains was performed by 16S rRNA and
rpoB gene sequence analysis as well as multilocus sequence typing
(MLST). The results showed that most (80.0%) of the P. multocida isolates
in this study represented special P. multocida subspecies, and 71.1% of
the isolates showed multiple-drug resistance. 45 isolates belonged to capsular types: A
(100%) and two LPS genotypes: L1 (95.6%) and L3 (4.4%). MLST revealed two new alleles
(pmi77 and gdh57) and one new sequence type (ST342).
ST129 types dominated in 45 P. multocida isolates. Isolates belonging to
ST129 were with the genes ompH+plpB+ptfA+tonB, whereas ST342 included
isolates with fur+hgbA+tonB genes. Population genetic analysis and the
MLST results revealed that at least one new ST genotype was present in the avian
P. multocida in China. These findings provide novel insights into the
epidemiological characteristics of avian P. multocida isolates in
southwest China.
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Affiliation(s)
- Zhangcheng Li
- 1) Department of Veterinary Medicine, Rongchang Campus of Southwest University, Chongqing 402460, China
| | - Fangjun Cheng
- 1) Department of Veterinary Medicine, Rongchang Campus of Southwest University, Chongqing 402460, China.,2) Chongqing Engineering Research Center of Veterinary Science, Chongqing 402460, China
| | - Shimei Lan
- 1) Department of Veterinary Medicine, Rongchang Campus of Southwest University, Chongqing 402460, China
| | - Jianhua Guo
- 1) Department of Veterinary Medicine, Rongchang Campus of Southwest University, Chongqing 402460, China.,2) Chongqing Engineering Research Center of Veterinary Science, Chongqing 402460, China
| | - Wei Liu
- 1) Department of Veterinary Medicine, Rongchang Campus of Southwest University, Chongqing 402460, China
| | - Xiaoyan Li
- 1) Department of Veterinary Medicine, Rongchang Campus of Southwest University, Chongqing 402460, China
| | - Zeli Luo
- 1) Department of Veterinary Medicine, Rongchang Campus of Southwest University, Chongqing 402460, China
| | - Manli Zhang
- 1) Department of Veterinary Medicine, Rongchang Campus of Southwest University, Chongqing 402460, China
| | - Juan Wu
- 1) Department of Veterinary Medicine, Rongchang Campus of Southwest University, Chongqing 402460, China
| | - Yang Shi
- 1) Department of Veterinary Medicine, Rongchang Campus of Southwest University, Chongqing 402460, China
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26
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Peng Z, Wang H, Liang W, Chen Y, Tang X, Chen H, Wu B. A capsule/lipopolysaccharide/MLST genotype D/L6/ST11 of Pasteurella multocida is likely to be strongly associated with swine respiratory disease in China. Arch Microbiol 2017; 200:107-118. [DOI: 10.1007/s00203-017-1421-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 07/17/2017] [Accepted: 07/29/2017] [Indexed: 12/17/2022]
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