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Macchi MV, Suanes A, Salaberry X, Dearmas BE, Rivas E, Piaggio J, Gil AD. Leptospirosis as a cause of infertility in Uruguayan beef cattle. Prev Vet Med 2024; 228:106227. [PMID: 38772120 DOI: 10.1016/j.prevetmed.2024.106227] [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: 12/15/2023] [Revised: 05/08/2024] [Accepted: 05/10/2024] [Indexed: 05/23/2024]
Abstract
Leptospirosis, caused by pathogenic spirochetes of the genus Leptospira spp., is a globally significant zoonotic disease that affects humans and animals. In cattle, leptospirosis is associated not only with overt clinical manifestations but also with reproductive diseases, including infertility. This study assesses the potential correlation between leptospirosis and infertility in Uruguayan beef cattle. A case-control study involved 31 beef herds with no prior history of Leptospira vaccination. In each herd, veterinarians identified 10 non-pregnant (cases) and 25 pregnant cows (controls) using ultrasound, and blood and urine samples were collected from each cow. Serological diagnosis was performed using the Microscopic Agglutination Test (MAT), and quantitative PCR (qPCR) was used to assess Leptospira excretion. Additionally, antibodies against bovine viral diarrhea virus (BVDV) and infectious bovine rhinotracheitis (IBR) were tested. The results demonstrated an association between seropositivity to the Sejroe serogroup (cut-off 1:200) and infertility in cattle (OR=1.31; p-value=0.06). Furthermore, the level of Leptospira excretion (qPCR) in urine was associated with increased infertility risk, with cows excreting over 100 copies per mL of urine having the highest odds of infertility (OR=2.34; p-value<0.01). This study suggests a potential association between leptospirosis and infertility in Uruguayan beef cattle, emphasizing the importance of both serological and molecular diagnostics for assessing reproductive health in cattle herds. Future research should explore the impact of Leptospira serogroups on other reproductive disorders in cattle.
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Affiliation(s)
- María V Macchi
- División de laboratorios Veterinarios, Ministerio de Ganadería, Agricultura y Pesca, Montevideo, Uruguay.
| | - Alejandra Suanes
- División de laboratorios Veterinarios, Ministerio de Ganadería, Agricultura y Pesca, Montevideo, Uruguay
| | - Ximena Salaberry
- División de laboratorios Veterinarios, Ministerio de Ganadería, Agricultura y Pesca, Montevideo, Uruguay
| | - Bruno E Dearmas
- Departamento de Bioestadística, Facultad de Veterinaria, Montevideo, Uruguay
| | - Emiliano Rivas
- División de laboratorios Veterinarios, Ministerio de Ganadería, Agricultura y Pesca, Montevideo, Uruguay
| | - José Piaggio
- Departamento de Bioestadística, Facultad de Veterinaria, Montevideo, Uruguay
| | - Andrés D Gil
- Departamento de Bioestadística, Facultad de Veterinaria, Montevideo, Uruguay
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Shaukat W, de Jong E, McCubbin KD, Biesheuvel MM, van der Meer FJUM, De Buck J, Lhermie G, Hall DC, Kalbfleisch KN, Kastelic JP, Orsel K, Barkema HW. Herd-level prevalence of bovine leukemia virus, Salmonella Dublin and Neospora caninum in Alberta, Canada, dairy herds using ELISA on bulk tank milk samples. J Dairy Sci 2024:S0022-0302(24)00849-X. [PMID: 38825106 DOI: 10.3168/jds.2023-24611] [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: 12/24/2023] [Accepted: 04/14/2024] [Indexed: 06/04/2024]
Abstract
Endemic infectious diseases remain a major challenge for dairy producers worldwide. For effective disease control programs, up-to-date prevalence estimates are of utmost importance. The objective of this study was to estimate the herd-level prevalence of bovine leukemia virus (BLV), Salmonella Dublin, and Neospora caninum in dairy herds in Alberta, Canada using a serial cross-sectional study design. Bulk tank milk samples from all Alberta dairy farms were collected 4 times, in December 2021 (n = 489), April 2022 (n = 487), July 2022 (n = 487), and October 2022 (n = 480), and tested for antibodies against BLV, S. Dublin, and N. caninum using ELISAs. Herd-level apparent prevalence was calculated as positive samples divided by total tested samples at each time point. A mixed effect modified Poisson regression model was employed to assess the association of prevalence with region, herd size, herd type, and type of milking system. Apparent prevalence of BLV was 89.4, 88.7, 86.9 and 86.9% in December, April, July, and October, respectively, whereas for S. Dublin apparent prevalence was 11.2, 6.6, 8.6, and 8.5%, and for N. caninum apparent prevalence was 18.2, 7.4, 7.8, and 15.0%. For BLV, S. Dublin and N. caninum, a total of 91.7, 15.6, and 28.1% of herds, respectively, were positive at least once, whereas 82.5, 3.6, and 3.0% of herds were ELISA-positive at all 4 times. Compared with the north region, central Alberta had a high prevalence (prevalence ratio (PR) = 1.13) of BLV-antibody positive herds, whereas south Alberta had a high prevalence (PR = 2.56) of herds positive for S. Dublin antibodies. Furthermore, central (PR = 0.52) and south regions (PR = 0.46) had low prevalence of N. caninum-positive herds compared with the north. Hutterite colony herds were more frequently BLV-positive (PR = 1.13) but less frequently N. caninum-positive (PR = 0.47). Large herds (>7,200 L/day milk delivered ∼ > 250 cows) were 1.1 times more often BLV-positive, whereas small herds (≤3,600 L/day milk delivered ∼ ≤ 125 cows) were 3.2 times more often N. caninum-positive. For S. Dublin, Hutterite-colony herds were less frequently (PR = 0.07) positive than non-colony herds only in medium and large stratum but not in small stratum. Moreover, larger herds were more frequently (PR = 2.20) S. Dublin-positive than smaller herds only in non-colony stratum but not in colony stratum. Moreover, N. caninum prevalence was 1.6 times higher on farms with conventional milking systems compared with farms with an automated milking system. These results provide up-to-date information of the prevalence of these infections that will inform investigations of within-herd prevalence of these infections and help in devising evidence-based disease control strategies.
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Affiliation(s)
- Waseem Shaukat
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Ellen de Jong
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Kayley D McCubbin
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada; One Health at UCalgary, University of Calgary, Calgary, Alberta, Canada
| | - Marit M Biesheuvel
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | | | - Jeroen De Buck
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Guillaume Lhermie
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada; The Simpson Centre for Food and Agricultural Policy, The School of Public Policy, University of Calgary, Calgary, AB, Canada
| | - David C Hall
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | | | - John P Kastelic
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Karin Orsel
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Herman W Barkema
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada; One Health at UCalgary, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
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3
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Sohm C, Willixhofer D, Fasching E, Waldner K, Deitzer N, Steiner J, Jöbstl J, Schleicher C, Schwarz M, Fuchs R, Bourhy P, Käsbohrer A, Wittek T, Firth C, Steinparzer R, Desvars-Larrive A. First isolation and genotyping of pathogenic Leptospira spp. from Austria. Sci Rep 2024; 14:4467. [PMID: 38409294 PMCID: PMC10897423 DOI: 10.1038/s41598-024-53775-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 02/05/2024] [Indexed: 02/28/2024] Open
Abstract
Leptospirosis is a globally distributed zoonotic disease. The standard serological test, known as Microscopic Agglutination Test (MAT), requires the use of live Leptospira strains. To enhance its sensitivity and specificity, the usage of locally circulating strains is recommended. However, to date, no local strain is available from Austria. This study aimed to isolate circulating Leptospira strains from cattle in Austria to enhance the performances of the routine serological test for both humans and animals. We used a statistical approach combined with a comprehensive literature search to profile cattle with greater risk of leptospirosis infection and implemented a targeted sampling between November 2021 and October 2022. Urine and/or kidney tissue were sampled from 410 cattle considered at higher risk of infection. Samples were inoculated into EMJH-STAFF culture media within 2-6 h and a real-time PCR targeting the lipL32 gene was used to confirm the presence/absence of pathogenic Leptospira in each sample. Isolates were further characterised by core genome multilocus sequence typing (cgMLST). Nine out of 429 samples tested positive by PCR, from which three isolates were successfully cultured and identified as Leptospira borgpetersenii serogroup Sejroe serovar Hardjobovis, cgMLST cluster 40. This is the first report on the isolation and genotyping of local zoonotic Leptospira in Austria, which holds the potential for a significant improvement in diagnostic performance in the country. Although the local strain was identified as a cattle-adapted serovar, it possesses significant zoonotic implications. Furthermore, this study contributes to a better understanding of the epidemiology of leptospirosis in Europe.
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Affiliation(s)
- Cynthia Sohm
- VetFarm, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Kremesberg 13, 2563, Pottenstein, Austria.
- Unit of Veterinary Public Health and Epidemiology, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210, Vienna, Austria.
- University Clinic for Ruminants, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210, Vienna, Austria.
| | - Denise Willixhofer
- Institute for Veterinary Disease Control, Austrian Agency for Health and Food Safety (AGES), Robert Koch-Gasse 17, 2340, Mödling, Austria
| | - Eva Fasching
- Institute for Veterinary Disease Control, Austrian Agency for Health and Food Safety (AGES), Robert Koch-Gasse 17, 2340, Mödling, Austria
| | - Karoline Waldner
- Institute for Veterinary Disease Control, Austrian Agency for Health and Food Safety (AGES), Robert Koch-Gasse 17, 2340, Mödling, Austria
| | - Nicole Deitzer
- Unit of Veterinary Public Health and Epidemiology, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210, Vienna, Austria
| | - Janina Steiner
- Unit of Veterinary Public Health and Epidemiology, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210, Vienna, Austria
| | - Julia Jöbstl
- Unit of Veterinary Public Health and Epidemiology, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210, Vienna, Austria
| | - Corina Schleicher
- Department for Data, Statistics and Risk Assessment, Austrian Agency for Health and Food Safety (AGES), Zinzendorfgasse 27/1, 8010, Graz, Austria
| | - Marcel Schwarz
- Department for Data, Statistics and Risk Assessment, Austrian Agency for Health and Food Safety (AGES), Zinzendorfgasse 27/1, 8010, Graz, Austria
| | - Reinhard Fuchs
- Department for Data, Statistics and Risk Assessment, Austrian Agency for Health and Food Safety (AGES), Zinzendorfgasse 27/1, 8010, Graz, Austria
| | - Pascale Bourhy
- Unit Biology of Spirochetes, Department of Microbiology, Institut Pasteur, 25-28 Rue du Docteur Roux, 75015, Paris, France
| | - Annemarie Käsbohrer
- Unit of Veterinary Public Health and Epidemiology, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210, Vienna, Austria
| | - Thomas Wittek
- University Clinic for Ruminants, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210, Vienna, Austria
| | - Clair Firth
- Unit of Veterinary Public Health and Epidemiology, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210, Vienna, Austria
| | - Romana Steinparzer
- Institute for Veterinary Disease Control, Austrian Agency for Health and Food Safety (AGES), Robert Koch-Gasse 17, 2340, Mödling, Austria
| | - Amélie Desvars-Larrive
- VetFarm, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Kremesberg 13, 2563, Pottenstein, Austria
- Unit of Veterinary Public Health and Epidemiology, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210, Vienna, Austria
- Complexity Science Hub Vienna, Josefstädter Straße 39, 1080, Vienna, Austria
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Sohm C, Steiner J, Jöbstl J, Wittek T, Firth C, Steinparzer R, Desvars-Larrive A. A systematic review on leptospirosis in cattle: A European perspective. One Health 2023; 17:100608. [PMID: 37577054 PMCID: PMC10416059 DOI: 10.1016/j.onehlt.2023.100608] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 07/26/2023] [Accepted: 07/26/2023] [Indexed: 08/15/2023] Open
Abstract
Leptospirosis is a zoonotic disease which is globally distributed and represents a classic One Health issue that demands a comprehensive understanding of the hosts, transmission paths, and risk factors of transmission. Bovine leptospirosis often results in economic losses through its severe impact on reproduction performance while it threatens human health at human-cattle-environment interfaces. However, a clear analysis of the disease characteristics in European cattle is currently lacking. The objective of this review was to summarise the current knowledge on the epidemiology of bovine leptospirosis in Europe. We conducted a systematic literature review, screening four electronic databases, and filtered articles published between 2001 and 2021, in English, German, and French. Sixty-two articles were ultimately included in the review. The seroprevalence of leptospirosis in cattle was remarkably variable among studies, probably reflecting local variations but also heterogeneity in the study designs, laboratory methods, and sample sizes. Risk factors positively associated with the disease were diverse, related to local, environmental, and climatic parameters as well as farming practices. The most reported circulating Leptospira serogroups in European cattle were Sejroe (58.5%), Australis (41.5%), Grippotyphosa (41.5%), Icterohaemorrhagiae (37.7%), and Pomona (26.4%), which have also been associated with human infections worldwide. Abortion (58.6%) and fertility disorders (24.1%) were the most frequently reported signs of leptospirosis in European cattle and were generally associated with chronic infections. This work highlights several research gaps, including a lack of harmonisation in diagnostic methods, a lack of large-scale studies, and a lack of molecular investigations. Given that predictions regarding the climatic suitability for leptospirosis in Europe suggest an increase of leptospirosis risk it is important to raise awareness among stakeholders and motivate an integrated One Health approach to the prevention and control of this zoonotic disease in cattle and humans.
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Affiliation(s)
- Cynthia Sohm
- VetFarm, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Kremesberg 13, 2563 Pottenstein, Austria
- Unit of Veterinary Public Health and Epidemiology, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210 Vienna, Austria
- University Clinic for Ruminants, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210 Vienna, Austria
| | - Janina Steiner
- Unit of Veterinary Public Health and Epidemiology, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210 Vienna, Austria
| | - Julia Jöbstl
- Unit of Veterinary Public Health and Epidemiology, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210 Vienna, Austria
| | - Thomas Wittek
- University Clinic for Ruminants, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210 Vienna, Austria
| | - Clair Firth
- Unit of Veterinary Public Health and Epidemiology, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210 Vienna, Austria
| | - Romana Steinparzer
- Institute for Veterinary Disease Control, Austrian Agency for Health and Food Safety (AGES), Robert Koch-Gasse 17, 2340 Mödling, Austria
| | - Amélie Desvars-Larrive
- VetFarm, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Kremesberg 13, 2563 Pottenstein, Austria
- Unit of Veterinary Public Health and Epidemiology, Department of Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210 Vienna, Austria
- Complexity Science Hub Vienna, Josefstädter Straße 39, 1080 Vienna, Austria
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Wang J, Zhu X, Zhao Y, Liu H, Zhang Z, Yan L, Chen Y, Robertson ID, Guo A, Aleri JW. Prevalence and antimicrobial resistance of Salmonella and ESBL E. coli isolated from dairy cattle in Henan Province, China. Prev Vet Med 2023; 213:105856. [PMID: 36716653 DOI: 10.1016/j.prevetmed.2023.105856] [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: 09/20/2022] [Revised: 12/06/2022] [Accepted: 01/21/2023] [Indexed: 01/25/2023]
Abstract
Salmonella and ESBL-producing E. coli pose a threat to public health through the food chain. A cross-sectional study was conducted to determine the prevalence and antimicrobial resistance of Salmonella and ESBL E. coli in apparently healthy lactating dairy cattle in Henan Province. Thirty-five lactating cows per farm were sampled by fecal swabbing from 38 farms, with samples being pooled to a total of 7 pooled samples per herd. Eight of the 266 pooled fecal samples (3.0%) were positive for Salmonella (95% confidence intervals (CI): 1.3, 5.8) with a herd-level Salmonella prevalence of 13.2% (95% CI: 4.4, 28.1). The within-herd prevalence for pooled samples for Salmonella ranged from 0.0% to 28.6%. A high proportion of resistance to tetracycline (6/8) and florfenicol (6/8) was obtained in the cultured Salmonella. Multi-drug resistant isolates were observed on 4/5 Salmonella-positive farms. ESBL E. coli were identified on all farms (100% - 34/34, 95% CI: 89.7, 100). All ESBL E. coli isolates (n = 216) contained the blaCTX-M gene and two isolates also contained the blaTEM gene. Our study reports the prevalence and antimicrobial resistance of Salmonella and ESBL E. coli in apparently healthy lactating dairy cows from Henan Province.
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Affiliation(s)
- Jie Wang
- The State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China; School of Veterinary Medicine, College of Science, Health, Engineering and Education, Murdoch University, 90 South Street, Murdoch, 6150 Western Australia, Australia; Hubei International Scientific and Technological Cooperation Base of Veterinary Epidemiology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Xiaojie Zhu
- The State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China; School of Veterinary Medicine, College of Science, Health, Engineering and Education, Murdoch University, 90 South Street, Murdoch, 6150 Western Australia, Australia; Hubei International Scientific and Technological Cooperation Base of Veterinary Epidemiology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Yuxi Zhao
- The State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China; Hubei International Scientific and Technological Cooperation Base of Veterinary Epidemiology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Huan Liu
- Henan Dairy Herd Improvement Center, Zhengzhou 450046, China.
| | - Zhen Zhang
- Henan Dairy Herd Improvement Center, Zhengzhou 450046, China.
| | - Lei Yan
- Henan Dairy Herd Improvement Center, Zhengzhou 450046, China.
| | - Yingyu Chen
- The State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China; Hubei International Scientific and Technological Cooperation Base of Veterinary Epidemiology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Ian D Robertson
- The State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China; School of Veterinary Medicine, College of Science, Health, Engineering and Education, Murdoch University, 90 South Street, Murdoch, 6150 Western Australia, Australia; Hubei International Scientific and Technological Cooperation Base of Veterinary Epidemiology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Aizhen Guo
- The State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China; School of Veterinary Medicine, College of Science, Health, Engineering and Education, Murdoch University, 90 South Street, Murdoch, 6150 Western Australia, Australia; Hubei International Scientific and Technological Cooperation Base of Veterinary Epidemiology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Joshua W Aleri
- School of Veterinary Medicine, College of Science, Health, Engineering and Education, Murdoch University, 90 South Street, Murdoch, 6150 Western Australia, Australia; Centre for Animal Production and Health, Future Foods Institute, Murdoch University, 90 South Street, Murdoch, 6150 WA, Australia.
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McCarthy MC, O'Grady L, McAloon CG, Mee JF. Longitudinal Prevalence of Antibodies to Endemic Pathogens in Bulk Tank Milk Samples From Dairy Herds Engaged or Not in Contract Heifer Rearing. Front Vet Sci 2021; 8:785128. [PMID: 34901254 PMCID: PMC8661010 DOI: 10.3389/fvets.2021.785128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 11/03/2021] [Indexed: 11/23/2022] Open
Abstract
Since the abolition of EU milk production quotas in 2015, Europe's dairy industries have undergone a period of rapid expansion with possible resultant increased inter-herd transmission of endemic pathogens. The aims of this study were (1) to establish the post-2015 prevalence of antibodies to selected endemic infectious diseases and (2) to determine if prevalences differed between herds where heifers were reared at home and those where heifers were sent out for contract-rearing. Three bulk tank milk (BTM) samples were collected annually between May and August of 2018-20 inclusively from 120 Irish dairy herds. Additionally, herd vaccination status was collected by questionnaire. Milk samples were tested using commercially available ELISAs for eight pathogens: bovine viral diarrhea virus (BVDV), bovine herpesvirus 1 (BoHv-1), bovine respiratory syncytial virus (BRSV), Mycoplasma bovis, Mycobacterium avium subspecies paratuberculosis (MAP), Salmonella Dublin (S. Dublin), Leptospira Hardjo (L. Hardjo), and Neospora caninum (N. caninum). The true prevalence of each pathogen was calculated using a Rogan-Gladen estimator. The true prevalences (95% CI) of BTM antibodies in unvaccinated herds across the 3 years were as follows (i) BVDV: 57, 86, and 73% (95% CI: 40.7-65.9, 74-94, and 58-85) (n = 56, 56, and 48), (ii) BoHv-1: 47, 49, and 19% (95% CI: 26.3-69.7, 25-75, and 1-56) (n = 21, 20, and 11), (iii) L. Hardjo: 34, 59, and 73% (95% CI: 12.5-63, 33-82, and 33-99) (n = 15, 21, and 10), (iv) S. Dublin 32, 57, and 11% (95% CI: 12.21-68.1, 30.2-90.1, and 0) (n = 19, 22, and 13), (v) BRSV: 100% (95% CI: 99.5-100, 100, and 100) (n = 120, 109, and 91), (vi) MAP: 0% (95% CI: 0, 0, and 0) (n = 120, 109, and 91) (vii) N. caninum 0% (95% CI: 0, 0, and 0) (n = 120, 109, and 91) and (viii) M. bovis (ELISA) 53, 0.42, and 30% (95% CI: 3.95-6.84, 0, and 21-41) (n = 120, 109, and 91). M. bovis was detected by PCR in 0, 1, and 0% of herds in 2018, 2019, and 2020, respectively. This study showed that expanding Irish dairy herds are endemically infected with several of the studied pathogens. No differences in herd prevalence of infectious agents were observed between farms with different heifer rearing strategies (contract-rearing vs. traditional rearing).
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Affiliation(s)
- Marie-Claire McCarthy
- Teagasc, Animal and Bioscience Research Department, Dairy Production Research Centre, Fermoy, Ireland
- School of Veterinary Medicine, University College Dublin, Dublin, Ireland
| | - Luke O'Grady
- School of Veterinary Medicine, University College Dublin, Dublin, Ireland
| | - Connor G. McAloon
- School of Veterinary Medicine, University College Dublin, Dublin, Ireland
| | - John F. Mee
- Teagasc, Animal and Bioscience Research Department, Dairy Production Research Centre, Fermoy, Ireland
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A systematic review on modelling approaches for economic losses studies caused by parasites and their associated diseases in cattle. Parasitology 2018; 146:129-141. [PMID: 30068403 DOI: 10.1017/s0031182018001282] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Parasites reside inside or outside their hosts and get host nutrition and blood. Here, we have emphasized economic losses in cattle caused by parasitic diseases due to ecto- and endo- parasites (flies, ticks, mites and helminths). We have outlined different methods/models including economic evaluation techniques and dynamic analysis as a major class, used for the calculation of economic losses caused by parasites in cattle. According to already conducted studies, a decrease in production is mentioned in quantity and percentage while financial losses are expressed in the form of account with respect to per head, herd or for the specific study area. The parasites cause the reduced production and financial losses due to control, treatment and mortality costs. We calculated the average decrease in milk production and organ condemnation as 1.16 L animal-1 day-1 and 12.95%, respectively, from overall cattle parasitic infections. Moreover, the average calculated financial and percentage losses were US$ 50.67 animal-1 year-1 and 17.94%, respectively. Economically important parasitic diseases mentioned here are caused by specific spp. of protozoans and helminths according to data collected from the literature. Protozoan diseases include tick-borne diseases, coccidiosis, neosporosis, trypanosomiasis and cryptosporidiosis. Losses due to tick-borne infections were encountered for decreased milk production, mortality, treatment and control. Losses from coccidiosis were due to decreased weight gain, treatment costs and mortality. While abortion losses were encountered in neosporosis. Trypanosomiasis caused losses due to a decrease in milk yield. Moreover, only diagnostic (conventional or molecular techniques) cost was taken into account for cryptosporidiosis. Economically important nematode parasites are Oesophagostomum spp., Cooperia spp., Trichostrongylus spp., Strongyloides spp., Ostertagia spp. and Haemonchus placei. Due to the zoonotic importance of echinococcosis, Echinococcus granulosus is the most economically important cestode parasite. Losses caused by echinococcosis were due to organ condemnation, carcass weight loss and decreases hide value, milk production and fecundity. While, fascioliasis is one of the most economically important trematodal disease, which causes cirrhosis of the liver due to parasite migration, and thus, the organ becomes inedible. So, it would be helpful for farmers and researchers to approach these methods/models for calculation of parasitic losses and should adopt suitable measures to avoid long-term economic losses.
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Miyama T, Watanabe E, Ogata Y, Urushiyama Y, Kawahara N, Makita K. Herd-level risk factors associated with Leptospira Hardjo infection in dairy herds in the southern Tohoku, Japan. Prev Vet Med 2017; 149:15-20. [PMID: 29290296 DOI: 10.1016/j.prevetmed.2017.11.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 11/07/2017] [Accepted: 11/07/2017] [Indexed: 12/01/2022]
Abstract
A cross-sectional study was designed to generate information on the herd level prevalence and the risk factors for Leptospira serovar Hardjo (L. Hardjo) in Yamagata, the southern Tohoku, Japan. Bulk tank milk samples from 109 dairy herds were used to test the herd level sero-prevalence of L. Hardjo using a commercial ELISA kit, which detects both L. interrogans serovar Hardjo and L. borgpetersenii serovar Hardjo. A questionnaire survey was conducted at the sampled farms, and univariable and multivariable analyses were performed. Spatial clustering of L. Hardjo at the herd level was examined using spatial scan statistics. Seventy-one herds were found to be positive for L. Hardjo, and the apparent herd prevalence was 65.1% (95% CI: 56.2-74.1%). The risk factors for sero-positivity were larger herd size (p=0.004) and cows with a history of staying in Hokkaido (p <0.001). The spatial scan statistic detected a most likely cluster (relative risk=1.87, log likelihood ratio=9.93, radius=13.70km, p<0.01) in the southern part of the study area where there are large herd sizes and farm density is high. This study revealed that L. Hardjo is prevalent throughout Yamagata, and large scale herd owners introducing cows from Hokkaido in particular should be aware of the risk of infection.
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Affiliation(s)
- Takeshi Miyama
- Veterinary Epidemiology Unit, Division of Health and Environment Sciences, Graduate School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai Midorimachi, Ebetsu, Hokkaido 069-8501, Japan; Yamagata Prefecture Agricultural Mutual Aid Association, 1333 Koseki, Tendo, Yamagata, 994-8511, Japan
| | - Eiji Watanabe
- Yamagata Prefecture Agricultural Mutual Aid Association, 1333 Koseki, Tendo, Yamagata, 994-8511, Japan
| | - Yoshimi Ogata
- Yamagata Prefecture Agricultural Mutual Aid Association, 1333 Koseki, Tendo, Yamagata, 994-8511, Japan
| | - Yoshiro Urushiyama
- Yamagata Prefecture Agricultural Mutual Aid Association, 1333 Koseki, Tendo, Yamagata, 994-8511, Japan
| | - Naoya Kawahara
- Yamagata Prefecture Agricultural Mutual Aid Association, 1333 Koseki, Tendo, Yamagata, 994-8511, Japan
| | - Kohei Makita
- Veterinary Epidemiology Unit, Division of Health and Environment Sciences, Graduate School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai Midorimachi, Ebetsu, Hokkaido 069-8501, Japan.
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Valenzuela J, Sethi A, Aulik N, Poulsen K. Antimicrobial resistance patterns of bovine Salmonella enterica isolates submitted to the Wisconsin Veterinary Diagnostic Laboratory: 2006–2015. J Dairy Sci 2017; 100:1319-1330. [DOI: 10.3168/jds.2016-11419] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Accepted: 10/30/2016] [Indexed: 01/05/2023]
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Allan KJ, Biggs HM, Halliday JEB, Kazwala RR, Maro VP, Cleaveland S, Crump JA. Epidemiology of Leptospirosis in Africa: A Systematic Review of a Neglected Zoonosis and a Paradigm for 'One Health' in Africa. PLoS Negl Trop Dis 2015; 9:e0003899. [PMID: 26368568 PMCID: PMC4569256 DOI: 10.1371/journal.pntd.0003899] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 06/10/2015] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Leptospirosis is an important but neglected bacterial zoonosis that has been largely overlooked in Africa. In this systematic review, we aimed to summarise and compare current knowledge of: (1) the geographic distribution, prevalence, incidence and diversity of acute human leptospirosis in Africa; and (2) the geographic distribution, host range, prevalence and diversity of Leptospira spp. infection in animal hosts in Africa. METHODS Following Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines, we searched for studies that described (1) acute human leptospirosis and (2) pathogenic Leptospira spp. infection in animals. We performed a literature search using eight international and regional databases for English and non-English articles published between January 1930 to October 2014 that met out pre-defined inclusion criteria and strict case definitions. RESULTS AND DISCUSSION We identified 97 studies that described acute human leptospirosis (n = 46) or animal Leptospira infection (n = 51) in 26 African countries. The prevalence of acute human leptospirosis ranged from 2 3% to 19 8% (n = 11) in hospital patients with febrile illness. Incidence estimates were largely restricted to the Indian Ocean islands (3 to 101 cases per 100,000 per year (n = 6)). Data from Tanzania indicate that human disease incidence is also high in mainland Africa (75 to 102 cases per 100,000 per year). Three major species (Leptospira borgpetersenii, L. interrogans and L. kirschneri) are predominant in reports from Africa and isolates from a diverse range of serogroups have been reported in human and animal infections. Cattle appear to be important hosts of a large number of Leptospira serogroups in Africa, but few data are available to allow comparison of Leptospira infection in linked human and animal populations. We advocate a 'One Health' approach to promote multidisciplinary research efforts to improve understanding of the animal to human transmission of leptospirosis on the African continent.
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Affiliation(s)
- Kathryn J. Allan
- The Boyd Orr Centre for Population and Ecosystem Health, Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, United Kingdom
| | - Holly M. Biggs
- Division of Infectious Diseases and International Health, Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Jo E. B. Halliday
- The Boyd Orr Centre for Population and Ecosystem Health, Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, United Kingdom
| | | | - Venance P. Maro
- Kilimanjaro Christian Medical Centre, Moshi, Tanzania
- Kilimanjaro Christian Medical University College, Tumaini University, Moshi, Tanzania
| | - Sarah Cleaveland
- The Boyd Orr Centre for Population and Ecosystem Health, Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, United Kingdom
| | - John A. Crump
- Division of Infectious Diseases and International Health, Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
- Kilimanjaro Christian Medical Centre, Moshi, Tanzania
- Kilimanjaro Christian Medical University College, Tumaini University, Moshi, Tanzania
- Duke Global Health Institute, Duke University, Durham, North Carolina, United States of America
- Centre for International Health, University of Otago, Dunedin, New Zealand
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