1
|
Jiménez-Martín D, García-Bocanegra I, Risalde MA, Napp S, Domínguez M, Romero B, Moreno I, Martínez R, Cano-Terriza D. Mycobacterium tuberculosis complex in domestic goats in Southern Spain. Prev Vet Med 2024; 227:106204. [PMID: 38604014 DOI: 10.1016/j.prevetmed.2024.106204] [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: 10/19/2023] [Revised: 04/02/2024] [Accepted: 04/05/2024] [Indexed: 04/13/2024]
Abstract
Tuberculosis (TB) is a zoonotic infectious disease caused by bacteria belonging to the Mycobacterium tuberculosis complex (MTC), which can affect a wide variety of domestic and wild animal species. Although the role of goats as a reservoir of MTC bacteria has been evidenced, information about the circulation of MTC strains in this species is still very scarce. The aim of the present study was to determine the seroprevalence, spatial distribution, risk factors and MTC spoligotypes circulating in goats from Andalusia (Southern Spain), the Spanish region with the largest goat census and a hotspot area of TB in both cattle and wild ungulates. A total of 2155 serum samples from 80 goat flocks were analyzed by an in-house ELISA using the P22 protein complex as a coating antigen. Antibodies against MTC were detected in 473 goats (21.9%, 95% CI: 20.2-23.7) and the true seroprevalence was 22.3% (95% CI: 20.6-24.1). Seropositivity was found in 72 (90.0%) of the 80 flocks analyzed. The generalized estimating equation model showed that the management system (higher seroprevalence on intensive and semi-intensive farms), and the presence of hospital pens inside the regular stables, were risk factors potentially associated with MTC exposure in goats in Southern Spain. The spatial analysis identified a significant spatial cluster (p < 0.001) in Eastern Andalusia. A total of 16 different MTC spoligotypes, including five of M. caprae and eleven of M. bovis, were identified in goats between 2015 and 2022 in the study area, with SB0157 as the most frequently isolated. The results obtained indicate widespread and non-homogeneous spatial distribution of MTC in goat herds from Southern Spain. The high individual and herd-level seroprevalence values found suggest that goats could play a significant role in the maintenance and transmission of MTC in the study area. Our results highlight the importance of implementing control measures in this species.
Collapse
Affiliation(s)
- Débora Jiménez-Martín
- Departamento de Sanidad Animal, Grupo de Investigación en Sanidad Animal y Zoonosis (GISAZ), UIC Zoonosis y Enfermedades Emergentes ENZOEM, Universidad de Córdoba, Córdoba, Spain
| | - Ignacio García-Bocanegra
- Departamento de Sanidad Animal, Grupo de Investigación en Sanidad Animal y Zoonosis (GISAZ), UIC Zoonosis y Enfermedades Emergentes ENZOEM, Universidad de Córdoba, Córdoba, Spain; CIBERINFEC, ISCIII - CIBER de Enfermedades Infecciosas, Instituto de Salud Carlos III, Spain.
| | - María A Risalde
- CIBERINFEC, ISCIII - CIBER de Enfermedades Infecciosas, Instituto de Salud Carlos III, Spain; Departamento de Anatomía y Anatomía Patológica Comparadas y Toxicología, Grupo de Investigación en Sanidad Animal y Zoonosis (GISAZ), UIC Zoonosis y Enfermedades Emergentes ENZOEM, Universidad de Córdoba, Córdoba, Spain
| | - Sebastián Napp
- IRTA, Animal Health Research Centre (CReSA IRTA-UAB), Bellaterra, Spain
| | - Mercedes Domínguez
- Unidad de Inmunología Microbiana, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Beatriz Romero
- Centro de Vigilancia Sanitaria Veterinaria (VISAVET) y Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
| | - Inmaculada Moreno
- Unidad de Inmunología Microbiana, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Remigio Martínez
- Departamento de Sanidad Animal, Grupo de Investigación en Sanidad Animal y Zoonosis (GISAZ), UIC Zoonosis y Enfermedades Emergentes ENZOEM, Universidad de Córdoba, Córdoba, Spain
| | - David Cano-Terriza
- Departamento de Sanidad Animal, Grupo de Investigación en Sanidad Animal y Zoonosis (GISAZ), UIC Zoonosis y Enfermedades Emergentes ENZOEM, Universidad de Córdoba, Córdoba, Spain; CIBERINFEC, ISCIII - CIBER de Enfermedades Infecciosas, Instituto de Salud Carlos III, Spain
| |
Collapse
|
2
|
Castro-Rodriguez B, León-Ordóñez K, Franco-Sotomayor G, Benítez-Medina JM, Jiménez-Pizarro N, Cárdenas-Franco G, Granda JC, Aguirre-Martínez JL, Orlando SA, Hermoso de Mendoza J, García-Bereguiain MÁ. Population structure of Mycobacterium tuberculosis in El Oro: A first insight into Ecuador-Peru tuberculosis transmission. J Infect Public Health 2024; 17:527-534. [PMID: 38310744 DOI: 10.1016/j.jiph.2024.01.015] [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: 11/13/2023] [Revised: 01/17/2024] [Accepted: 01/22/2024] [Indexed: 02/06/2024] Open
Abstract
BACKGROUND Tuberculosis (TB) is a major public health concern in Ecuador and Peru, both settings of high burden of drug resistance TB. Molecular epidemiology tools are important to understand the transmission dynamics of Mycobacterium tuberculosis Complex (MTBC) and to track active transmission clusters of regional importance. This study is the first to address the transmission of TB between Peru and Ecuador through the population structure of MTBC lineages circulating in the Ecuadorian border province of "El Oro". METHODS A total number of 56 MTBC strains from this province for years 2012-2015 were included in the study and analyzed by 24-loci MIRU-VNTR and spoligotyping. RESULTS Genotyping revealed a high degree of diversity for MTBC in "El Oro", without active transmission clusters. MTBC L4 was predominant, with less than 2% of strains belonging to MTBC L2-Beijing. CONCLUSIONS These results may suggest that TB dynamics in this rural and semi-urban area would not be linked to highly transmitted strains like MTBC L2-Beijing from Peru, but related to TB relapse; although further studies with larger MTBC cultures collection from recent years are needed. Nevertheless, we recommend to reinforce TB surveillance programs in remote rural settings and border regions in Ecuador.
Collapse
Affiliation(s)
| | - Kerly León-Ordóñez
- One Health Research Group. Universidad de las Américas, Quito, Ecuador; Yachay Tech University, Urcuquí, Ecuador
| | - Greta Franco-Sotomayor
- Instituto Nacional de Investigación en Salud Pública "Leopoldo Izquieta Pérez", Guayaquil, Ecuador; Universidad Católica Santiago de Guayaquil, Guayaquil, Ecuador
| | | | - Natalia Jiménez-Pizarro
- Departamento de Sanidad Animal. Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
| | | | - Juan Carlos Granda
- Instituto Nacional de Investigación en Salud Pública "Leopoldo Izquieta Pérez", Guayaquil, Ecuador
| | | | - Solon Alberto Orlando
- Instituto Nacional de Investigación en Salud Pública "Leopoldo Izquieta Pérez", Guayaquil, Ecuador; Universidad Espíritu Santo, Guayaquil, Ecuador
| | | | | |
Collapse
|
3
|
Castro-Rodriguez B, Espinoza-Andrade S, Franco-Sotomayor G, Benítez-Medina JM, Jiménez-Pizarro N, Cárdenas-Franco C, Granda JC, Jouvin JL, Orlando SA, Hermoso de Mendoza J, García-Bereguiain MÁ. A first insight into tuberculosis transmission at the border of Ecuador and Colombia: a retrospective study of the population structure of Mycobacterium tuberculosis in Esmeraldas province. Front Public Health 2024; 12:1343350. [PMID: 38384875 PMCID: PMC10879341 DOI: 10.3389/fpubh.2024.1343350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 01/18/2024] [Indexed: 02/23/2024] Open
Abstract
Objective Tuberculosis (TB) is a major public health concern in Ecuador and Colombia, considering that both countries are high-burden TB settings. Molecular epidemiology is crucial to understand the transmission dynamics of Mycobacterium tuberculosis complex (MTBC) and to identify active transmission clusters of regional importance. Methods We studied the potential transmission of TB between Colombia and Ecuador through the analysis of the population structure of MTBC lineages circulating in the Ecuadorian province of Esmeraldas at the border with Colombia. A total of 105 MTBC strains were characterized by 24-loci MIRU-VNTR and spoligotyping. Results MTBC lineage 4 is only present in Esmeraldas; no MTBC strains belonging to Lineage 2-sublineage Beijing were found despite its presence in other provinces of Ecuador and, in Colombia. Genotyping results revealed a high degree of diversity for MTBC in Esmeraldas: Neither active transmission clusters within this province nor including MTBC strains from Colombia or other provinces of Ecuador were found. Conclusion Our data suggest that tuberculosis dynamics in this rural and isolated area may be not related to highly transmitted strains but could be influenced by other health determinants that favor TB relapse such as poverty and poor health system access. Further studies including a larger number of MTBC strains from Esmeraldas are necessary to test this hypothesis.
Collapse
Affiliation(s)
| | | | - Greta Franco-Sotomayor
- Instituto Nacional de Investigación en Salud Pública “Leopoldo Izquieta Pérez”, Guayaquil, Ecuador
- Facultad de Medicina, Universidad Católica Santiago de Guayaquil, Guayaquil, Ecuador
| | - José Manuel Benítez-Medina
- Departamento de Patología Infecciosa, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
| | - Natalia Jiménez-Pizarro
- Departamento de Patología Infecciosa, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
| | | | - Juan Carlos Granda
- Instituto Nacional de Investigación en Salud Pública “Leopoldo Izquieta Pérez”, Guayaquil, Ecuador
| | - Jose Luis Jouvin
- Facultad de Medicina, Universidad Católica Santiago de Guayaquil, Guayaquil, Ecuador
| | - Solon Alberto Orlando
- Instituto Nacional de Investigación en Salud Pública “Leopoldo Izquieta Pérez”, Guayaquil, Ecuador
- Universidad Espíritu Santo, Guayaquil, Ecuador
| | - Javier Hermoso de Mendoza
- Departamento de Patología Infecciosa, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
| | | |
Collapse
|
4
|
Altissimi C, Noé-Nordberg C, Ranucci D, Paulsen P. Presence of Foodborne Bacteria in Wild Boar and Wild Boar Meat-A Literature Survey for the Period 2012-2022. Foods 2023; 12:foods12081689. [PMID: 37107481 PMCID: PMC10137515 DOI: 10.3390/foods12081689] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 04/12/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
The wild boar is an abundant game species with high reproduction rates. The management of the wild boar population by hunting contributes to the meat supply and can help to avoid a spillover of transmissible animal diseases to domestic pigs, thus compromising food security. By the same token, wild boar can carry foodborne zoonotic pathogens, impacting food safety. We reviewed literature from 2012-2022 on biological hazards, which are considered in European Union legislation and in international standards on animal health. We identified 15 viral, 10 bacterial, and 5 parasitic agents and selected those nine bacteria that are zoonotic and can be transmitted to humans via food. The prevalence of Campylobacter, Listeria monocytogenes, Salmonella, Shiga toxin-producing E. coli, and Yersinia enterocolitica on muscle surfaces or in muscle tissues of wild boar varied from 0 to ca. 70%. One experimental study reported the transmission and survival of Mycobacterium on wild boar meat. Brucella, Coxiella burnetii, Listeria monocytogenes, and Mycobacteria have been isolated from the liver and spleen. For Brucella, studies stressed the occupational exposure risk, but no indication of meat-borne transmission was evident. Furthermore, the transmission of C. burnetii is most likely via vectors (i.e., ticks). In the absence of more detailed data for the European Union, it is advisable to focus on the efficacy of current game meat inspection and food safety management systems.
Collapse
Affiliation(s)
- Caterina Altissimi
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06121 Perugia, Italy
| | | | - David Ranucci
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06121 Perugia, Italy
| | - Peter Paulsen
- Unit of Food Hygiene and Technology, Institute of Food Safety, Food Technology and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210 Vienna, Austria
| |
Collapse
|
5
|
Barandiaran S, Marfil MJ, Capobianco G, Pérez Aguirreburualde MS, Zumárraga MJ, Eirin ME, Cuerda MX, Winter M, Martínez Vivot M, Perez AM, La Sala LF. Epidemiology of Pig Tuberculosis in Argentina. Front Vet Sci 2021; 8:693082. [PMID: 34381835 PMCID: PMC8350762 DOI: 10.3389/fvets.2021.693082] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 07/01/2021] [Indexed: 11/23/2022] Open
Abstract
Bovine tuberculosis (bTB) is a disease caused mainly by the Mycobacterium bovis and that is endemic to livestock populations in most Latin American countries. Traditionally, bTB control programs are costly and targeted to cattle, largely disregarding other species such as swine and wildlife. According to official services, in Argentina disease prevalence in pigs is comparable to that observed in cattle, suggesting the need for efficient control programs to manage the disease in both species. Additionally, extensive farming systems, which are commonly practiced in Argentina, allow the interaction between livestock and wildlife such as wild boar (Sus scrofa), which is considered a natural host of the disease. Here, we evaluated the bTB pigs- cattle interface, studying the dynamics of M. bovis isolates in the pig population and identifying farm-level epidemiological variables associated with the disease confirmation at slaughterhouses. Additionally, to assess the potential multi-host systems in the transmission of bTB, the molecular characterization of wild boar mycobacterial strains was included in the study, as this interaction has not been previously evaluated in this region. Multivariable logistic regression models were used to assess the association between farm-level epidemiological variables (location, farm size, and co-existence with cattle and goats) and bTB confirmation in pig tuberculosis-like lesions samples. Results showed that when cattle were present, the odds of bTB in pigs decreased 0.3 or 0.6% for every additional sow when cattle were present or absent in the farm, respectively. Pigs shared 60% (18/30) of the genotypes with cattle and wild boar, suggesting transmission at the interface between pigs and cattle and highlighting the potential role of wild boar in bTB maintenance. These results provide novel information about the molecular diversity of M. bovis strains in pigs in Argentina and proposes the potential relevance of a multi-host system in the epidemiology of bTB in the region. The statistical models presented here may be used in the design of a low cost, abattoir-based surveillance program for bTB in the pig industry in Argentina, with potential extension to other settings with similar epidemiological conditions.
Collapse
Affiliation(s)
- Soledad Barandiaran
- Instituto de Investigaciones en Producción Animal (INPA), Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - María Jimena Marfil
- Cátedra de Enfermedades Infecciosas, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Guillermo Capobianco
- Departamento de Matemática, Instituto de Matemática de Bahía Blanca- Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional del Sur, Buenos Aires, Argentina
| | - María Sol Pérez Aguirreburualde
- Center for Animal Health and Food Safety, College of Veterinary Medicine, University of Minnesota, Minnesota City, MN, United States
| | - Martín José Zumárraga
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria: Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - María Emilia Eirin
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria: Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - María Ximena Cuerda
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria: Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Marina Winter
- Centro de Investigaciones y Transferencia de Río Negro, Universidad Nacional de Río Negro, Bariloche, Argentina
| | - Marcela Martínez Vivot
- Cátedra de Enfermedades Infecciosas, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Andres Maximiliano Perez
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria: Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Luciano Francisco La Sala
- Instituto de Ciencias Biológicas y Biomédicas del Sur, Universidad Nacional del Sur - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| |
Collapse
|
6
|
Ghielmetti G, Landolt P, Friedel U, Morach M, Hartnack S, Stephan R, Schmitt S. Evaluation of Three Commercial Interferon-γ Assays in a Bovine Tuberculosis Free Population. Front Vet Sci 2021; 8:682466. [PMID: 34179172 PMCID: PMC8222658 DOI: 10.3389/fvets.2021.682466] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 04/29/2021] [Indexed: 12/18/2022] Open
Abstract
The interferon-γ assay has been used worldwide as an ancillary test for the diagnosis of bovine tuberculosis (bTB). This study aimed to describe, based on the bTB-free status in Switzerland, the difference of applying a more stringent cutoff point of 0.05 compared with 0.1 for bTB surveillance. Moreover, the effect of time between blood collection and stimulation, culture results, optical density values, and the influence of testing different breeds were evaluated. Blood samples from a total of 118 healthy cows older than 6 months were tested with three commercial interferon-gamma assays. To confirm the bTB-free status of the tested animals and to investigate potential cross-reactions with nontuberculous mycobacteria, pulmonary and abdominal lymph nodes in addition to ileal mucosa from each cattle were used for the detection of viable Mycobacteria spp. by specific culture. Significant differences regarding the proportion of false-positive results between the two Bovigam tests and between Bovigam 2G and ID Screen were found. Samples analyzed with Bovigam 2G were 2.5 [95% confidence interval (CI) 1.6–3.9] times more likely to yield a false-positive test result than samples analyzed with Bovigam TB. Similarly, the odds ratio (OR) for testing samples false-positive with ID Screen compared with Bovigam TB was 1.9 (95% CI 1.21–2.9). The OR for testing false-positive with ID Screen compared with Bovigam 2G was less to equally likely with an OR of 0.75 (95% CI 0.5–1.1). When using a cutoff of 0.05 instead of 0.1, the OR for a false-positive test result was 2.2 (95% CI 1.6–3.1). Samples tested after 6 h compared with a delayed stimulation time of 22–24 h were more likely to yield a false-positive test result with an OR of 3.9 (95% CI 2.7–5.6). In conclusion, applying a more stringent cutoff of 0.05 with the Bovigam 2G kit generates a questionable high number of false-positive results of one of three tested animals. Furthermore, specific breeds might show an increased risk to result false-positive in the Bovigam 2G and the ID Screen assays.
Collapse
Affiliation(s)
- Giovanni Ghielmetti
- Section of Veterinary Bacteriology, Institute for Food Safety and Hygiene, University of Zurich, Zurich, Switzerland
| | - Patricia Landolt
- Section of Veterinary Bacteriology, Institute for Food Safety and Hygiene, University of Zurich, Zurich, Switzerland
| | - Ute Friedel
- Section of Veterinary Bacteriology, Institute for Food Safety and Hygiene, University of Zurich, Zurich, Switzerland
| | - Marina Morach
- Institute for Food Safety and Hygiene, University of Zurich, Zurich, Switzerland
| | - Sonja Hartnack
- Section of Epidemiology, University of Zurich, Zurich, Switzerland
| | - Roger Stephan
- Section of Veterinary Bacteriology, Institute for Food Safety and Hygiene, University of Zurich, Zurich, Switzerland
| | - Sarah Schmitt
- Section of Veterinary Bacteriology, Institute for Food Safety and Hygiene, University of Zurich, Zurich, Switzerland
| |
Collapse
|
7
|
Long-term molecular surveillance provides clues on a cattle origin for Mycobacterium bovis in Portugal. Sci Rep 2020; 10:20856. [PMID: 33257726 PMCID: PMC7705689 DOI: 10.1038/s41598-020-77713-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 11/17/2020] [Indexed: 11/08/2022] Open
Abstract
Animal tuberculosis (TB), caused by Mycobacterium bovis, is maintained in Portugal in a multi-host system, with cattle, red deer and wild boar, playing a central role. However, the ecological processes driving transmission are not understood. The main aim of this study was thus to contribute to the reconstruction of the spatiotemporal history of animal TB and to refine knowledge on M. bovis population structure in order to inform novel intervention strategies. A collection of 948 M. bovis isolates obtained during long-term surveillance (2002–2016, 15 years) of cattle (n = 384), red deer (n = 303) and wild boar (n = 261), from the main TB hotspot areas, was characterized by spoligotyping and 8 to 12-loci MIRU-VNTR. Spoligotyping identified 64 profiles and MIRU-VNTR distinguished 2 to 36 subtypes within each spoligotype, enabling differentiation of mixed or clonal populations. Common genotypic profiles within and among livestock and wildlife in the same spatiotemporal context highlighted epidemiological links across hosts and regions, as for example the SB0119-M205 genotype shared by cattle in Beja district or SB0121-M34 shared by the three hosts in Castelo Branco and Beja districts. These genomic data, together with metadata, were integrated in a Bayesian inference framework, identifying five ancestral M. bovis populations. The phylogeographic segregation of M. bovis in specific areas of Portugal where the disease persists locally is postulated. Concurrently, robust statistics indicates an association of the most probable ancient population with cattle and Beja, providing a clue on the origin of animal TB epidemics. This relationship was further confirmed through a multinomial probability model that assessed the influence of host species on spatiotemporal clustering. Two significant clusters were identified, one that persisted between 2004 and 2010, in Beja district, with Barrancos county at the centre, overlapping the central TB core area of the Iberian Peninsula, and highlighting a significant higher risk associated to cattle. The second cluster was predominant in the 2012–2016 period, holding the county Rosmaninhal at the centre, in Castelo Branco district, for which wild boar contributed the most in relative risk. These results provide novel quantitative insights beyond empirical perceptions, that may inform adaptive TB control choices in different regions.
Collapse
|
8
|
Ghielmetti G, Hilbe M, Friedel U, Menegatti C, Bacciarini L, Stephan R, Bloemberg G. Mycobacterial infections in wild boars (Sus scrofa) from Southern Switzerland: Diagnostic improvements, epidemiological situation and zoonotic potential. Transbound Emerg Dis 2020; 68:573-586. [PMID: 32640107 PMCID: PMC8247353 DOI: 10.1111/tbed.13717] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 06/29/2020] [Accepted: 07/02/2020] [Indexed: 12/12/2022]
Abstract
The occurrence of mycobacterial infections in different hosts and their implication as obligate or opportunistic pathogens remain mainly unclear. In addition to the well-known pathogenic members of the Mycobacterium tuberculosis - complex (MTBC), over 180 non-tuberculous mycobacteria (NTM) species have been described. Although the large majority of the NTM is assumed to be non-pathogenic to most individuals, an increasing trend in NTM infections has been observed over the last decades. The reasons of such augmentation are probably more than one: improved laboratory diagnostics, an increasing number of immunocompromised patients and individuals with lung damage are some of the possible aspects. Mandibular lymph nodes of 176 hunted wild boars from the pre-Alpine region of Canton Ticino, Switzerland, were collected. Following gross inspection, each lymph node was subjected to culture and to an IS6110 based real-time PCR specific for MTBC members. Histology was performed of a selection of lymph nodes (n = 14) presenting gross visible lesions. Moreover, accuracy of matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) species identification was compared with sequence analysis of a combination of housekeeping genes. Mycobacteria of the MTBC were detected in 2.8% of the wild boars (n = 5; CI95% 1.2-6.5) and were all confirmed to be Mycobacterium microti by molecular methods. In addition, based on the examined lymph nodes, NTM were detected in 57.4% (n = 101; CI95% 50.0-64.5) of the wild boars originating from the study area. The 111 isolates belonged to 24 known species and three potentially undescribed Mycobacterium species. M. avium subsp. hominissuis thereby predominated (22.5%) and was found in lymph nodes with and without macroscopic changes. Overall, the present findings show that, with the exception of undescribed Mycobacterium species where identification was not possible (3.6%; 4/111), MALDI-TOF MS had a high concordance rate (90.1%; 100/111 isolates) to the sequence-based reference method.
Collapse
Affiliation(s)
- Giovanni Ghielmetti
- Institute for Food Safety and Hygiene, Section of Veterinary Bacteriology, University of Zurich, Zurich, Switzerland
| | - Monika Hilbe
- Institute of Veterinary Pathology, University of Zurich, Zurich, Switzerland
| | - Ute Friedel
- Institute for Food Safety and Hygiene, Section of Veterinary Bacteriology, University of Zurich, Zurich, Switzerland
| | | | | | - Roger Stephan
- Institute for Food Safety and Hygiene, Section of Veterinary Bacteriology, University of Zurich, Zurich, Switzerland
| | - Guido Bloemberg
- Institute for Food Safety and Hygiene, National Reference Center for Enteropathogenic Bacteria and Listeria, University of Zurich, Zurich, Switzerland
| |
Collapse
|
9
|
Reis AC, Albuquerque T, Botelho A, Cunha MV. Polyclonal infection as a new scenario in Mycobacterium caprae epidemiology. Vet Microbiol 2019; 240:108533. [PMID: 31902500 DOI: 10.1016/j.vetmic.2019.108533] [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: 07/14/2019] [Revised: 11/27/2019] [Accepted: 11/27/2019] [Indexed: 11/30/2022]
Abstract
Portugal is one of the European Union countries with an ongoing eradication program for bovine tuberculosis (TB), which does not include systematic goat testing. However, surveillance in small ruminants is increasingly important, since goat and sheep can harbour Mycobacterium caprae and be an infection source to cattle with impact in the success of bovine TB control. Furthermore, the information regarding the epidemiology and biology of M. caprae is quite limited comparing to the cognate bovine-adapted ecotype, M. bovis. In this work, we applied spoligotyping and MIRU-VNTR (Mycobacterial Interspersed Repetitive Units-Variable Number of Tandem Repeats) to M. caprae obtained between 2003 and 2014 from 55 animal hosts, including goat (n = 29), cattle (n = 21), sheep (n = 1) and wild boar (n = 4) from Portugal. The molecular analysis revealed a unique spoligotyping pattern (SB0157) and 24 MIRU types. Genotyping of serial M. caprae from herds with recurrent outbreaks enabled further discrimination of epidemiologically related isolates, supporting a clonal structure in Portugal and denoting the emergence of clonal diversity at the herd level, more apparent for MIRU4. Results suggest a founder effect and adaptive genotypic divergence, paving the way for sympatric speciation. Double allele findings at MIRU4 in over 20 % of infected animals indicates that co-infection and in vivo microevolution may be frequent in the goat-adapted ecotype. While polyclonal infection appears common in M. caprae epidemiology, the functional significance of subtle genotypic variations remains to be disclosed, namely at the interface with the host, to expand knowledge on the epidemiology and biology of this neglected ecotype.
Collapse
Affiliation(s)
- Ana C Reis
- INIAV, IP - National Institute for Agrarian and Veterinary Research, Av. da República, Quinta do Marquês, Edifício Principal, Piso 1, 2780 -157 Oeiras, Portugal; cE3c - Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências da Universidade de Lisboa, Edifício C2, 4º Piso, Campo Grande, 1749-016 Lisboa, Portugal; BioISI - Biosystems & Integrative Sciences Institute, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Teresa Albuquerque
- INIAV, IP - National Institute for Agrarian and Veterinary Research, Av. da República, Quinta do Marquês, Edifício Principal, Piso 1, 2780 -157 Oeiras, Portugal
| | - Ana Botelho
- INIAV, IP - National Institute for Agrarian and Veterinary Research, Av. da República, Quinta do Marquês, Edifício Principal, Piso 1, 2780 -157 Oeiras, Portugal
| | - Mónica V Cunha
- INIAV, IP - National Institute for Agrarian and Veterinary Research, Av. da República, Quinta do Marquês, Edifício Principal, Piso 1, 2780 -157 Oeiras, Portugal; cE3c - Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências da Universidade de Lisboa, Edifício C2, 4º Piso, Campo Grande, 1749-016 Lisboa, Portugal; BioISI - Biosystems & Integrative Sciences Institute, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
| |
Collapse
|
10
|
Cano-Terriza D, Risalde MA, Rodríguez-Hernández P, Napp S, Fernández-Morente M, Moreno I, Bezos J, Fernández-Molera V, Sáez JL, García-Bocanegra I. Epidemiological surveillance of Mycobacterium tuberculosis complex in extensively raised pigs in the south of Spain. Prev Vet Med 2018; 159:87-91. [DOI: 10.1016/j.prevetmed.2018.08.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 08/30/2018] [Accepted: 08/30/2018] [Indexed: 10/28/2022]
|