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Kostova V, Hanke D, Kaspar H, Fiedler S, Schwarz S, Krüger-Haker H. Macrolide resistance in Mannheimia haemolytica isolates associated with bovine respiratory disease from the German national resistance monitoring program GE RM-Vet 2009 to 2020. Front Microbiol 2024; 15:1356208. [PMID: 38495516 PMCID: PMC10940430 DOI: 10.3389/fmicb.2024.1356208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 02/13/2024] [Indexed: 03/19/2024] Open
Abstract
Data collected from the German national resistance monitoring program GERM-Vet showed slowly increasing prevalence of macrolide resistance among bovine respiratory disease (BRD)-associated Pasteurellacae from cattle over the last decade. The focus of this study was to analyze the genetic basis of antimicrobial resistance (AMR) and the prevalence of multidrug-resistance (MDR)-mediating integrative and conjugative elements (ICEs) in 13 German BRD-associated Mannheimia haemolytica isolates collected between 2009 and 2020 via whole-genome sequencing. Antimicrobial susceptibility testing (AST) was performed via broth microdilution according to the recommendations of the Clinical and Laboratory Standards Institute for the macrolides erythromycin, tilmicosin, tulathromycin, gamithromycin, tildipirosin, and tylosin as well as 25 other antimicrobial agents. All isolates either had elevated MICs or were resistant to at least one of the macrolides tested. Analysis of whole-genome sequences obtained by hybrid assembly of Illumina MiSeq and Oxford Nanopore MinION reads revealed the presence of seven novel Tn7406-like ICEs, designated Tn7694, and Tn7724- Tn7729. These ICEs harbored the antimicrobial resistance genes erm(T), mef (C), mph(G), floR, catA3, aad(3")(9), aph(3')-Ia, aac(3)-IIa, strA, strB, tet(Y), and sul2 in different combinations. In addition, mutational changes conferring resistance to macrolides, nalidixic acid or streptomycin, respectively, were detected among the M. haemolytica isolates. In addition, four isolates carried a 4,613-bp plasmid with the β-lactamase gene blaROB - 1. The detection of the macrolide resistance genes erm(T), mef (C), and mph(G) together with other resistance genes on MDR-mediating ICEs in bovine M. haemolytica may explain the occurrence of therapeutic failure when treating BRD with regularly used antimicrobial agents, such as phenicols, penicillins, tetracyclines, or macrolides. Finally, pathogen identification and subsequent AST is essential to ensure the efficacy of the antimicrobial agents applied to control BRD in cattle.
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Affiliation(s)
- Valeria Kostova
- Institute of Microbiology and Epizootics, Centre for Infection Medicine, School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
- Veterinary Centre for Resistance Research (TZR), School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
| | - Dennis Hanke
- Institute of Microbiology and Epizootics, Centre for Infection Medicine, School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
- Veterinary Centre for Resistance Research (TZR), School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
| | - Heike Kaspar
- Federal Office of Consumer Protection and Food Safety (BVL), Berlin, Germany
| | - Stefan Fiedler
- Federal Office of Consumer Protection and Food Safety (BVL), Berlin, Germany
| | - Stefan Schwarz
- Institute of Microbiology and Epizootics, Centre for Infection Medicine, School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
- Veterinary Centre for Resistance Research (TZR), School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
| | - Henrike Krüger-Haker
- Institute of Microbiology and Epizootics, Centre for Infection Medicine, School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
- Veterinary Centre for Resistance Research (TZR), School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
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Ahmed S, El-Fatah Mahmoud MA, Nemr WA, Abdel-Rahman EH, El-Shershaby A, Fouad EA, Liaqat F, Wijewardana V. Detection of immune effects of the Mannheimia haemolytica gamma irradiated vaccine in sheep. Vet Res Commun 2024; 48:245-257. [PMID: 37642819 DOI: 10.1007/s11259-023-10207-w] [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: 06/21/2023] [Accepted: 08/25/2023] [Indexed: 08/31/2023]
Abstract
Exposure to gamma rays from cobalt 60 (Co60) can induce a complete inactivation of Mannheimia haemolytica. The inactivated bacterial pathogen is a potential vaccine candidate for immunization of ruminants such as sheep. The subcutaneous administration of irradiated vaccine in a two-dose regimen (4.0 × 109 colony forming unit (CFU) per dose) results in no mortality in any of the vaccinated sheep during immunization and after subsequent challenge of the live bacteria of the same strain of M. haemolytica. A significant rise in serum IgG titer, detected through ELISA, is observed after the passage of two weeks from the inoculation of the first dose whereas, the peak of the mean serum antibody titer occurred after two weeks of booster dose. The vaccination does not bring significant change to the IFN-γ levels in serum. The bacterial challenge of the vaccinated sheep does not induce a further seroconversion relative to serum antibody titer. In conclusion, the vaccinated sheep are protected by the elevated IgG titer and increased levels of IL-4 (Th-2 response) compared to the non-vaccinated sheep. Radiation technology can provide the opportunity for mass production of immunologically safe vaccines against animal and zoonotic diseases. Ethics Approval by the National Research Center Ethics Committee (Trial Registration Number (TRN) no 13,602,023, 13/5/2023) was obtained.
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Affiliation(s)
- Sahar Ahmed
- Department of Cell Biology, Biotechnology Research Institute, National Research Centre, Giza, Egypt.
| | - Mohamed Abd El-Fatah Mahmoud
- Department of Parasitology and Animal Diseases, Veterinary Research Institute, National Research Centre, Giza, Egypt
| | - Waleed Abdelgaber Nemr
- Department of Radiation Microbiology, National Centre for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Eman Hussein Abdel-Rahman
- Department of Parasitology and Animal Diseases, Veterinary Research Institute, National Research Centre, Giza, Egypt
| | - Asmaa El-Shershaby
- Department of Molecular Biology, Biotechnology Research Institute, National Research Centre, Giza, Egypt
| | - Ehab Ali Fouad
- Department of Zoonosis, Veterinary Research Institute, National Research Centre, Giza, Egypt
| | - Fatima Liaqat
- Animal Production and Health Laboratory, Department of Nuclear Sciences and Applications, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
| | - Viskam Wijewardana
- Animal Production and Health Laboratory, Department of Nuclear Sciences and Applications, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
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Calderón Bernal JM, Fernández A, Arnal JL, Baselga C, Benito Zuñiga A, Fernández-Garyzábal JF, Vela Alonso AI, Cid D. Cluster analysis of bovine respiratory disease (BRD)-associated pathogens shows the existence of two epidemiological patterns in BRD outbreaks. Vet Microbiol 2023; 280:109701. [PMID: 36848816 DOI: 10.1016/j.vetmic.2023.109701] [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: 06/17/2022] [Revised: 12/20/2022] [Accepted: 02/15/2023] [Indexed: 02/18/2023]
Abstract
A hierarchical cluster analysis was used to classify outbreaks of bovine respiratory disease (BRD; n = 156) in natural groups according to the detection of nine pathogens (parainfluenza 3 virus (PI-3), bovine respiratory syncytial virus (BRSV), bovine coronavirus (BCV), bovine viral diarrhea virus (BVDV), and bovine herpesvirus 1 (BHV-1), Mannheimia haemolytica, Pasteurella multocida, Histophilus somni, and Mycoplasma bovis. Pathogens were detected by individual q-PCRs. Two clusters were identified. Cluster 1 was characterized by a relatively high frequency (40-72%) of four BRD-associated viruses, supporting their primary involvement in BRD. Cluster 2 was characterized by frequencies of PI-3, BRSV, or BVDV below 10% each. P. multocida and M. haemolytica were detected with high frequencies in both clusters (P > 0.05), while M. bovis and H. somni showed a significantly higher frequency in cluster 1and 2, respectively. Outbreaks in cluster 1 were associated with preweaning calves younger than 5 months (OR 2.2; 95% CI 1.1-4.5) and with cold months, whereas cluster 2 was associated with fattening calves older than 5 months after arrival to feedlots and without any seasonality. Thus, in addition to the classic epidemiological BRD pattern characterized by the primary involvement of viruses occurring preferably during winter and affecting young calves, there is a second pattern in which viruses would be less relevant, affecting mainly calves older than 5 months at any time of the year. This study allows a better understanding of the BRD epidemiology, which can be useful when implementing management and prophylaxis measures for a better control of this disease.
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Affiliation(s)
| | - Ana Fernández
- Exopol. Veterinary Diagnostic and Autogenous Vaccine Laboratory, Polígono Río Gállego, D/8., 50840 San Mateo de Gállego, Zaragoza, Spain
| | - José Luis Arnal
- Exopol. Veterinary Diagnostic and Autogenous Vaccine Laboratory, Polígono Río Gállego, D/8., 50840 San Mateo de Gállego, Zaragoza, Spain
| | - Cristina Baselga
- Exopol. Veterinary Diagnostic and Autogenous Vaccine Laboratory, Polígono Río Gállego, D/8., 50840 San Mateo de Gállego, Zaragoza, Spain
| | - Alfredo Benito Zuñiga
- Exopol. Veterinary Diagnostic and Autogenous Vaccine Laboratory, Polígono Río Gállego, D/8., 50840 San Mateo de Gállego, Zaragoza, Spain
| | - José Francisco Fernández-Garyzábal
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, Madrid, Spain; Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense, Madrid, Spain.
| | - Ana Isabel Vela Alonso
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, Madrid, Spain; Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense, Madrid, Spain
| | - Dolores Cid
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, Madrid, Spain
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Het Lam J, Derkman THJ, van Garderen E, Dijkman R, van Engelen E. Distinct Mannheimia haemolytica serotypes isolated from fatal infections in veal calves and dairy cows. Vet J 2023; 292:105940. [PMID: 36543311 DOI: 10.1016/j.tvjl.2022.105940] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 12/08/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
Fatal Mannheimia haemolytica (M. haemolytica) infections in cattle, which emerged in the Netherlands between 2004 and 2018, showed two distinct disease presentations: acute fibrinous polyserositis (FPS) in veal calves, and acute fibrinous pleuro-pneumonia (FPP) in adult dairy cattle. To determine whether these presentations were caused by different M. haemolytica genotypes, whole genome sequencing was performed on 96 isolates cultured after necropsy from inflamed sites of veal calves that died of M. haemolytica-associated FPS (n = 49) or with FPP lesions (n = 2), and from dairy cows that died of M. haemolytica-associated FPP (n = 45). Among the 96 M. haemolytica isolates, 93 were shown to belong to either of two large clusters, with 48/51 calf isolates belonging to one, and 43/45 cow isolates and two calf isolates from cases of FPP to the other. All M. haemolytica isolates from veal calves with FPS were of serotype A2, whereas the isolates from dairy cows and two calves with FPP were predominantly of serotypes A1 and A6. Most serotype A2 isolates from veal calves with FPS (95.6 %) contained multiple antibiotic resistance genes (ARGs) against three to five antimicrobial classes (phenicols, sulphonamides, tetracyclines, aminoglycosides or beta-lactams). In contrast, these ARGs were only present in 10.8 % of M. haemolytica A1 and A6 isolates from pneumonic adult cattle and absent in isolates from the two calves with FPP. These two disease presentations appear to be caused by genetically distinct strains with different antimicrobial resistance gene patterns. While M. haemolytica serotype A2 is generally considered to be a commensal microorganism of cattle, it was clearly associated with fatal FPS in veal calves in the Netherlands.
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Affiliation(s)
- J Het Lam
- Ruminant Health Department, Royal GD (Animal Health Service), Arnsbergstraat 7, 7418 EZ Deventer, the Netherlands.
| | - T H J Derkman
- Ruminant Health Department, Royal GD (Animal Health Service), Arnsbergstraat 7, 7418 EZ Deventer, the Netherlands
| | - E van Garderen
- Laboratory for Pathology and Histology, Royal GD, Arnsbergstraat 7, 7418 EZ Deventer, the Netherlands
| | - R Dijkman
- Research and Development, Molecular Biology Department, Royal GD, Arnsbergstraat 7, 7418 EZ Deventer, the Netherlands
| | - E van Engelen
- Research and Development, Bacteriology Department, Royal GD, Arnsbergstraat 7, 7418 EZ Deventer, the Netherlands
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Cai Y, van Putten JP, Gilbert MS, Gerrits WJ, Folkerts G, Braber S. Galacto-oligosaccharides as an anti-bacterial and anti-invasive agent in lung infections. Biomaterials 2022; 283:121461. [DOI: 10.1016/j.biomaterials.2022.121461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 02/10/2022] [Accepted: 03/05/2022] [Indexed: 11/02/2022]
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Mason C, Errington J, Foster G, Thacker J, Grace O, Baxter-Smith K. Mannheimia haemolytica serovars associated with respiratory disease in cattle in Great Britain. BMC Vet Res 2022; 18:5. [PMID: 34980139 PMCID: PMC8722318 DOI: 10.1186/s12917-021-03121-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 12/16/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Mannheimia haemolytica is commonly associated with respiratory disease in cattle worldwide as a cause of fibrinous pneumonia, bronchopneumonia and pleuritis. M. haemolytica is further subdivided into 12 serovars, however not all are considered to be pathogenic in cattle. The study aim was to determine the most common serovars of M. haemolytica associated with respiratory disease in cattle in Great Britain, which is currently unknown and could be useful information for clinicians when considering preventative strategies. RESULTS One hundred four M. haemolytica isolates isolated from bovine clinical pathology and post-mortem samples from pneumonia cases between 2016 and 2018 were tested using a multiplex PCR assay to identify M. haemolytica serovars A1, A2 and A6. 46 isolates (44.2%) typed as M. haemolytica serovar A1, 31 (29.8%) as M. haemolytica serovar A2 and 18 isolates (17.3%) as M. haemolytica serovar A6. Nine isolates (8.7%) were not A1, A2 or A6 so were considered to belong to other serovars or were not typable. CONCLUSION This study highlights the importance of M. haemolytica serovars other than A1 which may be responsible for respiratory disease in cattle and could help guide the veterinarian when making choices on preventative vaccination programmes.
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Affiliation(s)
- Colin Mason
- SRUC Veterinary Services, St Marys Industrial Estate, Dumfries, DG1 1DX, UK
| | - Jane Errington
- SRUC Veterinary Services, St Marys Industrial Estate, Dumfries, DG1 1DX, UK
| | - Geoffrey Foster
- SRUC Veterinary Services, An Lochran, 10 Inverness Campus, Inverness, IV2 5NA, UK
| | - Jennifer Thacker
- SRUC Veterinary Services, Pentlands Science Park, Bush Loan, Penicuik, Midlothian, EH260PZ, UK
| | - Oliver Grace
- SRUC Veterinary Services, Pentlands Science Park, Bush Loan, Penicuik, Midlothian, EH260PZ, UK
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De Koster J, Tena JK, Stegemann MR. Treatment of bovine respiratory disease with a single administration of tulathromycin and ketoprofen. Vet Rec 2021; 190:e834. [PMID: 34476817 DOI: 10.1002/vetr.834] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 05/18/2021] [Accepted: 07/27/2021] [Indexed: 11/05/2022]
Abstract
BACKGROUND The therapeutic strategy of bovine respiratory disease (BRD) often involves a combination of an antibiotic with an anti-inflammatory agent. Aim of this study was to evaluate the clinical effect of a new combination product containing tulathromycin and ketoprofen for the treatment of naturally occurring BRD. METHODS Two hundred and eighty animals were randomized upon diagnosis of BRD. One hundred forty animals each were treated once subcutaneously with tulathromycin-ketoprofen or tulathromycin. Rectal temperature of each animal was measured at 1, 2, 4, 6, 8, 10, 12 and 24 h post-treatment. Individual respiration and depression scores were determined at 6 h post-treatment. Daily rectal temperature, respiration and depression scores were recorded from day 2 to 14 and on day 21. RESULTS The tulathromycin-ketoprofen and tulathromycin treatment group demonstrated a treatment success rate of 94.2% and 95.0%, respectively and a relapse rate of 3.8% and 4.0%, respectively. Tulathromycin-ketoprofen demonstrated superior pyrexia control compared to tulathromycin within the first 24 h following treatment. Tulathromycin-ketoprofen-treated animals demonstrated faster improvement of their clinical symptoms (respiration and depression score). CONCLUSION Efficacy of tulathromycin-ketoprofen for the treatment of BRD was non-inferior to tulathromycin. The combination product clearly exhibited more pronounced fever control than tulathromycin which is considered beneficial for animal welfare.
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Affiliation(s)
- Jenne De Koster
- Veterinary Medicine Research and Development, Zoetis, Zaventem, Belgium
| | - Jezaniah-Kira Tena
- Veterinary Medicine Research and Development, Zoetis, Kalamazoo, Michigan, USA
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Kudirkiene E, Aagaard AK, Schmidt LMB, Pansri P, Krogh KM, Olsen JE. Occurrence of major and minor pathogens in calves diagnosed with bovine respiratory disease. Vet Microbiol 2021; 259:109135. [PMID: 34090248 DOI: 10.1016/j.vetmic.2021.109135] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 05/25/2021] [Indexed: 11/26/2022]
Abstract
Bovine respiratory disease (BRD) is caused by a mixture of viruses and opportunistic bacteria belonging to Pasteurellaceae and Mycoplasma bovis. However, these organisms are also commonly isolated from healthy calves. This study aimed to determine whether the organisms are present in higher numbers in calves sick with acute BRD than in clinically healthy calves, and further to genetically characterize bacteria of the family Pasteurellaceae to understand whether particular types are associated with disease. Forty-six clinically healthy and 46 calves with BRD were sampled by broncheoalveolar lavage (BAL) method in 11 herds geographically spread over Denmark to determine presence and quantity of microorganisms by culture and quantitative real time qPCR. Isolates of Pasteurellaceae were tested for antibiotic resistance and were whole genome sequenced to determine genotypes. Histophilus somni was in particular positively associated with BRD, suggesting particular importance of this organism as likely aetiology of BRD. In addition, quantification of bacteria revealed that higher counts of H. somni as well as of M. haemolytica was also a good indicator of the disease. Pasteurellaceae isolates were susceptible to the commonly used antibiotics in treatment of BRD, and genotypes were shared between isolates from clinically healthy and sick calves.
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Affiliation(s)
- Egle Kudirkiene
- Department of Veterinary and Animal Science University of Copenhagen, Copenhagen, Denmark
| | - Anne Katrine Aagaard
- Department of Veterinary and Animal Science University of Copenhagen, Copenhagen, Denmark
| | - Louise M B Schmidt
- Department of Veterinary and Animal Science University of Copenhagen, Copenhagen, Denmark
| | | | | | - John E Olsen
- Department of Veterinary and Animal Science University of Copenhagen, Copenhagen, Denmark.
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Arnal JL, Fernández A, Vela AI, Sanz C, Fernández-Garyzábal JF, Cid D. Capsular type diversity of Mannheimia haemolytica determined by multiplex real-time PCR and indirect hemagglutination in clinical isolates from cattle, sheep, and goats in Spain. Vet Microbiol 2021; 258:109121. [PMID: 34020174 DOI: 10.1016/j.vetmic.2021.109121] [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: 02/25/2021] [Accepted: 05/13/2021] [Indexed: 10/21/2022]
Abstract
This study compares the utility of a commercially available multiplex q-PCR assay for serotyping A1, A2, and A6 M. haemolytica serotypes with indirect hemagglutination, for determining the relative distribution of M. haemolytica capsular types associated with respiratory disorders in cattle, sheep, and goats. For the 129 isolates analyzed, both q-PCR and IHA assays exhibited nearly complete agreement for capsular types A1 (k = 0.965) and A2 (k = 0.888) and substantial agreement for A6 (k = 0.801). Despite the overall good performance of the commercial q-PCR, its effectiveness differed between the host origin of the isolates. The serotype was identified by q-PCR in 83.3 % of cattle, 77.8 % of goat, and 53.8 % of sheep isolates. Combining the results of both methods, A1 was the most prevalent in cattle and sheep (55.6 % and 22.25 %, respectively) but was not detected in goats, A2 was the most prevalent in goats (61.1 %) and the second most prevalent in cattle (16.7 %) and sheep (20.5 %). The prevalence of A6 was 7.4 %, 5.1 %, and 16.7 % in cattle, sheep, and goats, respectively. Other capsular types determined exclusively by IHA were A16 in cattle, A9 in goats, and A7, A8, A9, and A13 in sheep. Capsular type diversity was greater in sheep (H = 0.601) than in cattle (H = 0.408) and goat (H = 0.330) isolates. The commercial multiplex q-PCR is a valuable tool, alternative to IHA, for identifying isolates of capsular types A1, A2, and A6, the most frequent serotypes of M. haemolytica associated with respiratory disease in ruminants. However, when testing sheep isolates it should be complemented with immunological assays due to the wider range of serotypes implicated.
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Affiliation(s)
- J L Arnal
- Exopol. Veterinary Diagnostic and Autogenous Vaccine Laboratory, Polígono Río Gállego, D/8. 50840 San Mateo de Gállego, Zaragoza, Spain
| | - A Fernández
- Exopol. Veterinary Diagnostic and Autogenous Vaccine Laboratory, Polígono Río Gállego, D/8. 50840 San Mateo de Gállego, Zaragoza, Spain
| | - A I Vela
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, Madrid, Spain; Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense, Madrid, Spain
| | - C Sanz
- Exopol. Veterinary Diagnostic and Autogenous Vaccine Laboratory, Polígono Río Gállego, D/8. 50840 San Mateo de Gállego, Zaragoza, Spain
| | - J F Fernández-Garyzábal
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, Madrid, Spain; Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense, Madrid, Spain.
| | - D Cid
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, Madrid, Spain
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Sahay S, Natesan K, Prajapati A, Kalleshmurthy T, Shome BR, Rahman H, Shome R. Prevalence and antibiotic susceptibility of Mannheimia haemolytica and Pasteurella multocida isolated from ovine respiratory infection: A study from Karnataka, Southern India. Vet World 2020; 13:1947-1954. [PMID: 33132610 PMCID: PMC7566252 DOI: 10.14202/vetworld.2020.1947-1954] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 07/29/2020] [Indexed: 11/16/2022] Open
Abstract
Background and Aim: Respiratory infection due to Mannheimia haemolytica and Pasteurella multocida are responsible for huge economic losses in livestock sector globally and it is poorly understood in ovine population. The study aimed to investigate and characterize M. haemolytica and P. multocida from infected and healthy sheep to rule out the involvement of these bacteria in the disease. Materials and Methods: A total of 374 healthy and infected sheep samples were processed for isolation, direct detection by multiplex PCR (mPCR), and antibiotic susceptibility testing by phenotypic and genotypic methods. Results: Overall, 55 Pasteurella isolates (27 [7.2%] M. haemolytica and 28 [7.4%] P. multocida) were recovered and identified by bacteriological tests and species-specific PCR assays. Significant correlation between the detection of M. haemolytica (66.6%) with disease condition and P. multocida (19.1%) exclusively from infected sheep was recorded by mPCR. In vitro antibiotic susceptibility testing of 55 isolates revealed higher multidrug resistance in M. haemolytica (25.9%) than P. multocida (7.1%) isolates. Descending resistance towards penicillin (63.6%), oxytetracycline (23.6%), streptomycin (14.5%), and gentamicin (12.7%) and absolute sensitivity towards chloramphenicol were observed in both the pathogens. The antibiotic resistance genes such as strA (32.7%) and sul2 (32.7%) associated with streptomycin and sulfonamide resistance, respectively, were detected in the isolates. Conclusion: The study revealed the significant involvement of M. haemolytica together with P. multocida in ovine respiratory infection and is probably responsible for frequent disease outbreaks even after vaccination against hemorrhagic septicemia in sheep population of Karnataka, southern province of India.
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Affiliation(s)
- Swati Sahay
- Indian Council of Agricultural Research-National Institute of Veterinary Epidemiology and Disease Informatics, Bengaluru, Karnataka, India.,Department of Microbiology, Centre for Research in Pure and Applied Sciences, Jain University, Bengaluru, Karnataka, India
| | - Krithiga Natesan
- Indian Council of Agricultural Research-National Institute of Veterinary Epidemiology and Disease Informatics, Bengaluru, Karnataka, India
| | - Awadhesh Prajapati
- Indian Council of Agricultural Research-National Institute of Veterinary Epidemiology and Disease Informatics, Bengaluru, Karnataka, India
| | - Triveni Kalleshmurthy
- Indian Council of Agricultural Research-National Institute of Veterinary Epidemiology and Disease Informatics, Bengaluru, Karnataka, India
| | - Bibek Ranjan Shome
- Indian Council of Agricultural Research-National Institute of Veterinary Epidemiology and Disease Informatics, Bengaluru, Karnataka, India
| | - Habibur Rahman
- International Livestock Research Institute, CG Centre, NASC Complex, DPS Marg, Pusa, New Delhi, India
| | - Rajeswari Shome
- Indian Council of Agricultural Research-National Institute of Veterinary Epidemiology and Disease Informatics, Bengaluru, Karnataka, India
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