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Md Lasim A, Mohd Ngesom AM, Nathan S, Abdul Razak F, Abdul Halim M, Mohd-Saleh W, Zainul Abidin K, Mohd-Taib FS. Bacterial community profiles within the water samples of leptospirosis outbreak areas. PeerJ 2024; 12:e17096. [PMID: 38699181 PMCID: PMC11064854 DOI: 10.7717/peerj.17096] [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: 10/29/2023] [Accepted: 02/21/2024] [Indexed: 05/05/2024] Open
Abstract
Background Leptospirosis is a water-related zoonotic disease. The disease is primarily transmitted from animals to humans through pathogenic Leptospira bacteria in contaminated water and soil. Rivers have a critical role in Leptospira transmissions, while co-infection potentials with other waterborne bacteria might increase the severity and death risk of the disease. Methods The water samples evaluated in this study were collected from four recreational forest rivers, Sungai Congkak, Sungai Lopo, Hulu Perdik, and Gunung Nuang. The samples were subjected to next-generation sequencing (NGS) for the 16S rRNA and in-depth metagenomic analysis of the bacterial communities. Results The water samples recorded various bacterial diversity. The samples from the Hulu Perdik and Sungai Lopo downstream sampling sites had a more significant diversity, followed by Sungai Congkak. Conversely, the upstream samples from Gunung Nuang exhibited the lowest bacterial diversity. Proteobacteria, Firmicutes, and Acidobacteria were the dominant phyla detected in downstream areas. Potential pathogenic bacteria belonging to the genera Burkholderiales and Serratia were also identified, raising concerns about co-infection possibilities. Nevertheless, Leptospira pathogenic bacteria were absent from all sites, which is attributable to its limited persistence. The bacteria might also be washed to other locations, contributing to the reduced environmental bacterial load. Conclusion The present study established the presence of pathogenic bacteria in the river ecosystems assessed. The findings offer valuable insights for designing strategies for preventing pathogenic bacteria environmental contamination and managing leptospirosis co-infections with other human diseases. Furthermore, closely monitoring water sample compositions with diverse approaches, including sentinel programs, wastewater-based epidemiology, and clinical surveillance, enables disease transmission and outbreak early detections. The data also provides valuable information for suitable treatments and long-term strategies for combating infectious diseases.
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Affiliation(s)
- Asmalia Md Lasim
- Department of Herbal Medicine Research Centre, Insitute for Medical Research, Setia Alam, Malaysia
- Department of Biological Science and Biotechnology, Universiti Kebangsaan Malaysia, Bangi, Malaysia
| | | | - Sheila Nathan
- Department of Biological Science and Biotechnology, Universiti Kebangsaan Malaysia, Bangi, Malaysia
| | - Fatimah Abdul Razak
- Department of Biological Science and Biotechnology, Universiti Kebangsaan Malaysia, Bangi, Malaysia
| | - Mardani Abdul Halim
- Biotechnology Research Institute, Universiti Malaysia Sabah, Kota Kinabalu, Malaysia
| | - Wardah Mohd-Saleh
- Department of Herbal Medicine Research Centre, Insitute for Medical Research, Setia Alam, Malaysia
| | - Kamaruddin Zainul Abidin
- Faculty of Applied Science, Universiti Teknologi MARA (UiTM) Cawangan Pahang, Bandar Tun Razak, Pahang, Malaysia
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Sayanthi Y, Susanna D. Pathogenic Leptospira contamination in the environment: a systematic review. Infect Ecol Epidemiol 2024; 14:2324820. [PMID: 38511199 PMCID: PMC10953783 DOI: 10.1080/20008686.2024.2324820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 02/26/2024] [Indexed: 03/22/2024] Open
Abstract
Background The pathogenic Leptospira is maintained in renal tubules of certain animals, mostly rodents, and excreted in the urine which can contaminate the environment. It is necessary to detect pathogenic Leptospira in environmental samples. Knowing the survival of Leptospira in the environment (water and soil) can provide an overview of where and how they can be transmitted to humans. Objective Therefore, this study aimed to provide a systematic overview of pathogenic Leptospira presence in water and soil environment, the various species of pathogenic Leptospira that are harmful for human, and the ability to survive using a systematic review method. Methods The search process used four databases: PubMed, Science Direct, Scopus, and ProQuest. Furthermore, the articles sought were published from 2000 to July 2021, and 38 were analysed. Results The pathogenic Leptospira contamination in water was higher in urban areas, while soil samples were higher in rural areas. Various pathogenic Leptospira detected in the environment were L. alstonii, L. kmetyi, L. noguchii, and L. interrogans. Those pathogenic Leptospira can survive in water at 4-30°C and at pH < 7; in soil, it can survive at a humidity of < 20% and a pH < 6. Conclusion Urban and rural areas have the same risk for leptospirosis disease because pathogenic Leptospira (P1).
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Affiliation(s)
- Yulia Sayanthi
- Postgraduate Program in Public Health, Faculty of Public Health, Universitas Indonesia, Depok, Indonesia
- Department of Training-Services, PT. Immarez Solusi Utama Consultant - Training – Services, Serang, Banten, Indonesia
| | - Dewi Susanna
- Department of Environmental Health, Faculty of Public Health, Universitas Indonesia, Depok, Indonesia
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Beauté J, Innocenti F, Aristodimou A, Špačková M, Eves C, Kerbo N, Rimhanen-Finne R, Picardeau M, Faber M, Dougas G, Halldórsdóttir AM, Jackson S, Leitēna V, Vergison A, Borg ML, Pijnacker R, Sadkowska-Todys M, Martins JV, Rusu LC, Grilc E, Estévez-Reboredo RM, Niskanen T, Westrell T. Epidemiology of reported cases of leptospirosis in the EU/EEA, 2010 to 2021. Euro Surveill 2024; 29:2300266. [PMID: 38362624 PMCID: PMC10986659 DOI: 10.2807/1560-7917.es.2024.29.7.2300266] [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: 05/12/2023] [Accepted: 11/09/2023] [Indexed: 02/17/2024] Open
Abstract
BackgroundLeptospirosis is a zoonotic disease caused by bacteria of the genus Leptospira. Humans are infected by exposure to animal urine or urine-contaminated environments. Although disease incidence is lower in Europe compared with tropical regions, there have been reports of an increase in leptospirosis cases since the 2000s in some European countries.AimWe aimed to describe the epidemiology of reported cases of leptospirosis in the European Union/European Economic Area (EU/EEA) during 2010-2021 and to identify potential changes in epidemiological patterns.MethodsWe ran a descriptive analysis of leptospirosis cases reported by EU/EEA countries to the European Centre for Disease Prevention and Control with disease during 2010-2021. We also analysed trends at EU/EEA and national level.ResultsDuring 2010-2021, 23 countries reported 12,180 confirmed leptospirosis cases corresponding to a mean annual notification rate of 0.24 cases per 100,000 population. Five countries (France, Germany, the Netherlands, Portugal and Romania) accounted for 79% of all reported cases. The highest notification rate was observed in Slovenia with 0.82 cases per 100,000 population. Overall, the notification rate increased by 5.0% per year from 2010 to 2021 (95% CI: 1.2-8.8%), although trends differed across countries.ConclusionThe notification rate of leptospirosis at EU/EEA level increased during 2010-2021 despite including the first 2 years of the COVID-19 pandemic and associated changes in population behaviours. Studies at (sub)national level would help broaden the understanding of differences at country-level and specificities in terms of exposure to Leptospira, as well as biases in diagnosis and reporting.
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Affiliation(s)
- Julien Beauté
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | - Francesco Innocenti
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
- Epidemiology Unit, Regional Health Agency of Tuscany, Florence, Italy
| | | | - Michaela Špačková
- Centre for Epidemiology and Microbiology, Department of Infectious Diseases Epidemiology, National Institute of Public Health, Prague, Czechia
| | - Caroline Eves
- Department of Infectious Disease Epidemiology and Prevention, Statens Serum Institut, Copenhagen, Denmark
| | - Natalia Kerbo
- Department of Communicable Diseases Epidemiology, Health Board, Tallinn, Estonia
| | - Ruska Rimhanen-Finne
- Department of Health Security, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Mathieu Picardeau
- Institut Pasteur, Unité Biologie des spirochètes, Centre National de Référence de la Leptospirose, Paris, France
| | - Mirko Faber
- Department of Infectious Disease Epidemiology, Robert Koch-Institute (RKI), Berlin, Germany
| | - Georgios Dougas
- Directorate of Epidemiological Surveillance and Intervention for Infectious Diseases, National Public Health Organization, Athens, Greece
| | | | - Sarah Jackson
- Health Protection Surveillance Centre, Dublin, Ireland
| | | | | | - Maria Louise Borg
- Infectious Disease Prevention and Control Unit, Health Promotion and Disease Prevention Directorate, Pieta, Malta
| | - Roan Pijnacker
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands
| | | | - João Vieira Martins
- Directorate of Information and Analysis, Directorate-General of Health, Lisbon, Portugal
| | - Lavinia Cipriana Rusu
- National Centre for Surveillance and Control if Communicable Diseases, National Institute of Public Health, Bucharest, Romania
| | - Eva Grilc
- National Institute of Public Health, Ljubljana, Slovenia
| | | | - Taina Niskanen
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | - Therese Westrell
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
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Baharom M, Ahmad N, Hod R, Ja’afar MH, Arsad FS, Tangang F, Ismail R, Mohamed N, Mohd Radi MF, Osman Y. Environmental and Occupational Factors Associated with Leptospirosis: A Systematic Review. Heliyon 2024; 10:e23473. [PMID: 38173528 PMCID: PMC10761560 DOI: 10.1016/j.heliyon.2023.e23473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 12/01/2023] [Accepted: 12/05/2023] [Indexed: 01/05/2024] Open
Abstract
Background Leptospirosis is a neglected emerging zoonotic disease with a profound public health impact worldwide with higher burden of disease in resource-poor countries. The environmental and occupational exposures contribute to human and animal transmission, but the interaction was less explored. A deeper understanding of the critical environmental and occupational drivers in different contexts will provide useful information for disease control and prevention measures. Objective This review aimed to summarize the potential environmental and occupational risk factors associated with leptospirosis infection. Methods Four databases (Scopus, Web of Science, Ovid MEDLINE, EBSCOhost) were searched for articles published from 2012 to 2021. Eligible articles were assessed using a checklist for assessing the quality of the studies. The quality of the articles was assessed based on the laboratory diagnosis approach and statistical analysis method. Results A total of 32 studies were included in this systematic review. Water-related risk factors such as natural water as the primary water source (AOR 1.8-18.28), water-related recreational activities (AOR 2.36-10.45), flood exposure (AOR 1.54-6.04), contact with mud (AOR 1.57-4.58) and stagnant water (AOR 2.79-6.42) were associated with increased risk of leptospirosis. Infrastructural deficiencies such as un-plastered house walls and thatched houses presented a higher risk (AOR 2.71-5.17). Living in low-lying areas (AOR 1.58-3.74), on clay loam soil (OR 2.72), agricultural land (OR 2.09), and near rubber tree plantations (AOR 11.65) is associated with higher risk of leptospirosis. Contact with rats (AOR 1.4-3.5), livestock (AOR 1.3-10.4), and pigs (AOR 1.54-7.9) is associated with an increased risk of leptospirosis. Outdoor workers (AOR 1.95-3.95) and slaughterhouse workers (AOR 5.1-7.5) have higher risk of leptospirosis. Conclusion The environmental and occupational components related to water, infrastructure, landscape, agriculture, and exposed animals play an essential role in leptospirosis transmission. The magnitude of those risk factors differs with geographical region, climate factor, urbanization and population growth, and the country's socioeconomic status.
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Affiliation(s)
- Mazni Baharom
- Department of Public Health Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Bandar Tun Razak, Kuala Lumpur, 56000, Malaysia
| | - Norfazilah Ahmad
- Department of Public Health Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Bandar Tun Razak, Kuala Lumpur, 56000, Malaysia
| | - Rozita Hod
- Department of Public Health Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Bandar Tun Razak, Kuala Lumpur, 56000, Malaysia
| | - Mohd Hasni Ja’afar
- Department of Public Health Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Bandar Tun Razak, Kuala Lumpur, 56000, Malaysia
| | - Fadly Syah Arsad
- Department of Public Health Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Bandar Tun Razak, Kuala Lumpur, 56000, Malaysia
| | - Fredolin Tangang
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, Malaysia
| | - Rohaida Ismail
- Environmental Health Research Centre, Institute for Medical Research, Ministry of Health Malaysia, Malaysia
| | - Norlen Mohamed
- Environmental Health Unit, Disease Control Division, Ministry of Health Malaysia, Malaysia
| | | | - Yelmizaitun Osman
- Kelantan State Health Department, Ministry of Health Malaysia, Malaysia
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Suwannin P, Jangpatarapongsa K, Polpanich D, Alhibshi A, Errachid A, Elaissari A. Enhancing leptospirosis control with nanosensing technology: A critical analysis. Comp Immunol Microbiol Infect Dis 2024; 104:102092. [PMID: 37992537 DOI: 10.1016/j.cimid.2023.102092] [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: 09/19/2023] [Revised: 11/07/2023] [Accepted: 11/09/2023] [Indexed: 11/24/2023]
Abstract
Leptospirosis is a serious health problem in tropical areas; thus, animals shed leptospires in the environment. Humans are accidental hosts infected through exposure to contaminating bacteria in the environment. One health strategy can be applied to protect and eliminate leptospirosis because this cooperates and coordinates activities between doctors, veterinarians, and ecologists. However, conventional methods still have limitations. Therefore, the main challenges of leptospirosis control are the high sensing of detection methods to screen and control the pathogens. Interestingly, nano sensing combined with a leptospirosis detection approach can increase the sensitivity and eliminate some limitations. This article reviews nanomaterial development for an advanced leptospirosis detection method, e.g., latex beads-based agglutination test, magnetic nanoparticles enrichment, and gold-nanoparticles-based immunochromatographic assay. Thus, nanomaterials can be functionalized with biomolecules or sensing molecules utilized in various mechanisms such as biosensors. Over the last decade, many biosensors have been developed for Leptospira spp. pathogen and others. The evolution of biosensors for leptospirosis detection was designed for high efficiency and might be an alternative tool. In addition, the high-sensing fabrications are useful for leptospires screening in very low levels, for example, soil or water from the environment.
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Affiliation(s)
- Patcharapan Suwannin
- Center for Research Innovation and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand; Univ Lyon, University Claude Bernard Lyon-1, CNRS, ISA-UMR 5280, Villeurbanne 69622, France
| | - Kulachart Jangpatarapongsa
- Center for Research Innovation and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Duangporn Polpanich
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand
| | - Amani Alhibshi
- Department of Neuroscience Research, Institute of Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Abdelhamid Errachid
- Univ Lyon, University Claude Bernard Lyon-1, CNRS, ISA-UMR 5280, Villeurbanne 69622, France
| | - Abdelhamid Elaissari
- Univ Lyon, University Claude Bernard Lyon-1, CNRS, ISA-UMR 5280, Villeurbanne 69622, France.
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Okon EM, Okocha RC, Taiwo AB, Michael FB, Bolanle AM. Dynamics of co-infection in fish: A review of pathogen-host interaction and clinical outcome. FISH AND SHELLFISH IMMUNOLOGY REPORTS 2023; 4:100096. [PMID: 37250211 PMCID: PMC10213192 DOI: 10.1016/j.fsirep.2023.100096] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 04/09/2023] [Accepted: 05/15/2023] [Indexed: 05/31/2023] Open
Abstract
Co-infections can affect the transmission of a pathogen within a population and the pathogen's virulence, ultimately affecting the disease's dynamics. In addition, co-infections can potentially affect the host's immunological responses, clinical outcomes, survival, and disease control efficacy. Co-infections significantly impact fish production and can change several fish diseases' progression and severity. However, the effect of co-infection has only recently garnered limited attention in aquatic animals such as fish, and there is currently a dearth of studies on this topic. This study, therefore, presents an in-depth summary of the dynamics of co-infection in fish. This study reviewed the co-infection of fish pathogens, the interaction of pathogens and fish, clinical outcomes and impacts on fish immune responses, and fish survival. Most studies described the prevalence of co-infections in fish, with various parameters influencing their outcomes. Bacterial co-infection increased fish mortality, ulcerative dermatitis, and intestinal haemorrhage. Viral co-infection resulted in osmoregulatory effects, increased mortality and cytopathic effect (CPE). More severe histological alterations and clinical symptoms were related to the co-infection of fish than in single-infected fish. In parasitic co-infection, there was increased mortality, high kidney swelling index, and severe necrotic alterations in the kidney, liver, and spleen. In other cases, there were more severe kidney lesions, cartilage destruction and displacement. There was a dearth of information on mitigating co-infections in fish. Therefore, further studies on the mitigation strategies of co-infections in fish will provide valuable insights into this research area. Also, more research on the immunology of co-infection specific to each fish pathogen class (bacteria, viruses, fungi, and parasites) is imperative. The findings from such studies would provide valuable information on the relationship between fish immune systems and targeted responses.
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Affiliation(s)
| | - Reuben Chukwuka Okocha
- Department of Animal Science, College of Agricultural Sciences, Landmark University, P.M.B. 1001 Omu-Aran, Kwara State, Nigeria
- Climate Action Research Group, Landmark University SDG 13, Nigeria
| | | | - Falana Babatunde Michael
- Department of Animal Science, College of Agricultural Sciences, Landmark University, P.M.B. 1001 Omu-Aran, Kwara State, Nigeria
- Life Below Water Research Group, Landmark University SDG 14, Nigeria
| | - Adeniran Moji Bolanle
- Department of Animal Science, College of Agricultural Sciences, Landmark University, P.M.B. 1001 Omu-Aran, Kwara State, Nigeria
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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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Chapman T, Bachoon DS, Martinez GA, Burt CD, DeMontigny WC. Tracking the sources of Leptospira and nutrient flows in two urban watersheds of Puerto Rico. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1318. [PMID: 37833564 DOI: 10.1007/s10661-023-11948-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 10/05/2023] [Indexed: 10/15/2023]
Abstract
This study investigated the relationship between nutrient levels, source of fecal contamination, and pathogenic Leptospira in Puerto Rico's northern coast and San Juan Bay Estuary (SJBE) aquatic ecosystems. Microbial source tracking (MST) was also used to investigate the connections between sources of feces contamination and the presence of Leptospira. Eighty-seven water samples were collected during the June (n=44) and August (n=43) in 2020. To quantify phosphorus and nitrogen concentrations, standard USEPA protocols were utilized, specifically Methods 365.4 for total and dissolved phosphorus, 351.2 for total Kjeldahl nitrogen and ammonium, and 353.2 for nitrate. Lipl32 gene-specific quantitative polymerase chain reaction (qPCR) was used to detect the presence of Leptospira. Human (HF183), canine (BacCan-UCD), and equine (HoF597) MST assays were utilized to trace the origins of fecal contamination. Forty one percent of the locations exceeded Puerto Rico's authorized total phosphorus limit of 160 g L-1, while 34% exceeded the total nitrogen limit of 1700 g L-1. Nearly half of the streams examined are affected by eutrophication. The MST analysis identified human and canine feces as the most prevalent contaminants, affecting approximately 50% of the sites. In addition, Leptospira was detected in 32% of the June samples. There was a significant correlation (r = 0.79) between the incidence of pathogenic Leptospira and the human bacterial marker (HF183). This study illuminates the central role of anthropogenic inputs in nutrient enrichment and pathogen proliferation in Puerto Rico's aquatic ecosystems.
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Affiliation(s)
- Taylor Chapman
- Department of Biological and Environmental Sciences, Georgia College and State University, Campus Box 81, Milledgeville, GA, 31061-0490, USA
| | - D S Bachoon
- Department of Biological and Environmental Sciences, Georgia College and State University, Campus Box 81, Milledgeville, GA, 31061-0490, USA.
| | - G A Martinez
- University of Puerto Rico, Mayagüez Campus, San Juan, Puerto Rico
| | - C D Burt
- Department of Biological and Environmental Sciences, Georgia College and State University, Campus Box 81, Milledgeville, GA, 31061-0490, USA
| | - Wesley C DeMontigny
- Department of Biological and Environmental Sciences, Georgia College and State University, Campus Box 81, Milledgeville, GA, 31061-0490, USA
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dos Santos GF, Petri FAM, Pires GP, Panneitz AK, Braga ER, Malcher CS, Mongruel ACB, de Castro JHT, Mathias LA, de Oliveira LG. Prevalence and Risk Factors of Leptospira spp. Infection in Backyard Pigs in the State of Paraná, Brazil. Trop Med Infect Dis 2023; 8:468. [PMID: 37888596 PMCID: PMC10611261 DOI: 10.3390/tropicalmed8100468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 09/19/2023] [Accepted: 09/25/2023] [Indexed: 10/28/2023] Open
Abstract
Leptospirosis is a zoonotic disease that poses a significant threat to human and animal health worldwide. Among different animal species, pigs are known to play a crucial role in the transmission of the pathogenic Leptospira spp. This study aimed to investigate the prevalence of Leptospira spp. infection and associated risk factors in backyard pigs in the state of Paraná, Brazil. A set of 1393 blood samples were collected from pigs on 188 subsistence properties from 136 different municipalities of the Paraná state and tested using the microscopic agglutination test (MAT) to detect antibodies against 24 different Leptospira spp. serovars. The results revealed an overall seroprevalence of 15.87% (221/1393; 95% CI: 13.95-17.78%) for Leptospira spp. antibodies, with Icterohaemorrhagiae, Butembo, and Pomona being the most commonly detected in serovar levels. The lack of rodent control (OR 1.12, 95% CI: 0.63-1.98, p = 0.02) was the only variable associated with disease incidence and was identified as a significant risk factor for Leptospira spp. infection in this context. These findings highlight the urgent need to implement effective control measures, such as improved housing conditions, rodent control, and veterinary assistance, to prevent the spread of this zoonotic disease in backyard pigs in Paraná, Brazil.
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Affiliation(s)
- Giovanna Fernandes dos Santos
- School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, Brazil; (G.F.d.S.); (F.A.M.P.); (G.P.P.); (A.K.P.); (E.R.B.); (C.S.M.); (A.C.B.M.); (L.A.M.)
| | - Fernando Antônio Moreira Petri
- School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, Brazil; (G.F.d.S.); (F.A.M.P.); (G.P.P.); (A.K.P.); (E.R.B.); (C.S.M.); (A.C.B.M.); (L.A.M.)
| | - Gabriele Polia Pires
- School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, Brazil; (G.F.d.S.); (F.A.M.P.); (G.P.P.); (A.K.P.); (E.R.B.); (C.S.M.); (A.C.B.M.); (L.A.M.)
| | - Ana Karolina Panneitz
- School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, Brazil; (G.F.d.S.); (F.A.M.P.); (G.P.P.); (A.K.P.); (E.R.B.); (C.S.M.); (A.C.B.M.); (L.A.M.)
| | - Eduarda Ribeiro Braga
- School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, Brazil; (G.F.d.S.); (F.A.M.P.); (G.P.P.); (A.K.P.); (E.R.B.); (C.S.M.); (A.C.B.M.); (L.A.M.)
| | - Clarisse Sena Malcher
- School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, Brazil; (G.F.d.S.); (F.A.M.P.); (G.P.P.); (A.K.P.); (E.R.B.); (C.S.M.); (A.C.B.M.); (L.A.M.)
| | - Anna Claudia Baumel Mongruel
- School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, Brazil; (G.F.d.S.); (F.A.M.P.); (G.P.P.); (A.K.P.); (E.R.B.); (C.S.M.); (A.C.B.M.); (L.A.M.)
| | | | - Luís Antônio Mathias
- School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, Brazil; (G.F.d.S.); (F.A.M.P.); (G.P.P.); (A.K.P.); (E.R.B.); (C.S.M.); (A.C.B.M.); (L.A.M.)
| | - Luís Guilherme de Oliveira
- School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, Brazil; (G.F.d.S.); (F.A.M.P.); (G.P.P.); (A.K.P.); (E.R.B.); (C.S.M.); (A.C.B.M.); (L.A.M.)
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10
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Bradley EA, Lockaby G. Leptospirosis and the Environment: A Review and Future Directions. Pathogens 2023; 12:1167. [PMID: 37764975 PMCID: PMC10538202 DOI: 10.3390/pathogens12091167] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/31/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
Leptospirosis is a zoonotic disease of global importance with significant morbidity and mortality. However, the disease is frequently overlooked and underdiagnosed, leading to uncertainty of the true scale and severity of the disease. A neglected tropical disease, leptospirosis disproportionately impacts disadvantaged socioeconomic communities most vulnerable to outbreaks of zoonotic disease, due to contact with infectious animals and contaminated soils and waters. With growing evidence that Leptospira survives, persists, and reproduces in the environment, this paper reviews the current understanding of the pathogen in the environment and highlights the unknowns that are most important for future study. Through a systematic Boolean review of the literature, our study finds that detailed field-based study of Leptospira prevalence, survival, and transmission in natural waters and soils is lacking from the current literature. This review identified a strong need for assessment of physical characteristics and biogeochemical processes that support long-term viability of Leptospira in the environment followed by epidemiological assessment of the transmission and movement of the same strains of Leptospira in the present wildlife and livestock as the first steps in improving our understanding of the environmental stage of the leptospirosis transmission cycle.
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Affiliation(s)
- Elizabeth A. Bradley
- College of Forestry, Wildlife, and Environment, Auburn University, Auburn, AL 36849, USA
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11
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Sohn-Hausner N, Kmetiuk LB, Biondo AW. One Health Approach to Leptospirosis: Human-Dog Seroprevalence Associated to Socioeconomic and Environmental Risk Factors in Brazil over a 20-Year Period (2001-2020). Trop Med Infect Dis 2023; 8:356. [PMID: 37505652 PMCID: PMC10383893 DOI: 10.3390/tropicalmed8070356] [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: 05/21/2023] [Revised: 06/22/2023] [Accepted: 06/26/2023] [Indexed: 07/29/2023] Open
Abstract
Despite being considered a neglected, re-emerging and the most widespread zoonotic disease worldwide, human-dog leptospirosis has not been subjected to One Health approach, and neither were its socioeconomic and environmental risk factors, as well as concomitant spatial analysis over time. Accordingly, notified human leptospirosis cases, incidence rate and urban hotspot areas, in addition to a systematic review of dog leptospirosis cases, were performed nationwide from 2001 to 2020 in Brazil. Data on Gross Domestic Product (GDP), flooding and study areas were also assessed and tabulated. Human-dog leptospirosis cases were simultaneously mapped with overlapping flooding areas, along with the main circulant serovars. Comparative outcome has shown that dogs may be exposed similarly to humans, becoming important sentinels and/or reservoirs for human leptospirosis in larger geographic areas. Moreover, the study herein can help in the decision and implementation of public policies in Brazil and may serve as a model for other tropical countries worldwide.
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Affiliation(s)
- Natacha Sohn-Hausner
- Department of Cell and Molecular Biology, Federal University of Paraná, Curitiba 80035-050, PR, Brazil
| | - Louise Bach Kmetiuk
- Department of Cell and Molecular Biology, Federal University of Paraná, Curitiba 80035-050, PR, Brazil
| | - Alexander Welker Biondo
- Department of Cell and Molecular Biology, Federal University of Paraná, Curitiba 80035-050, PR, Brazil
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12
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Dos Santos EO, Klain VF, B Manrique S, Rodrigues RO, Dos Santos HF, Sangioni LA, Dasso MG, de Almeida MAB, Dos Santos E, Born LC, Reck J, Botton SDA. Influence of landscape structure on previous exposure to Leptospira spp. and Brucella abortus in free-living neotropical primates from southern Brazil. Am J Primatol 2023; 85:e23472. [PMID: 36814095 DOI: 10.1002/ajp.23472] [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: 04/06/2022] [Revised: 01/14/2023] [Accepted: 01/21/2023] [Indexed: 02/24/2023]
Abstract
The environments in which neotropical primates live have been undergoing an intense fragmentation process, constituting a major threat to the species' survival and causing resource scarcity, social isolation, and difficulty in dispersal, leaving populations increasingly vulnerable. Moreover, the proximity of wild environments to anthropized landscapes can change the dynamics of pathogens and the parasite-host-environment relationship, creating conditions that favor exposure to different pathogens. To investigate the previous exposure of free-living primates in Rio Grande do Sul State (RS), southern Brazil, to the bacterial agents Leptospira spp. and Brucella abortus, we investigated agglutinating antibodies against 23 serovars of Leptospira spp. using the microscopic agglutination test and B. abortus acidified antigen test in primate serum samples; 101 samples from primates captured between 2002 and 2016 in different forest fragments were used: 63 Alouatta caraya, 36 Alouatta guariba clamitans, and 02 Sapajus nigritus cucullatus. In addition, the forest remnants where the primates were sampled were characterized in a multiscale approach in radii ranging from 200 to 1400 m to investigate the potential relationship of previous exposure to the agent with the elements that make up the landscape structure. The serological investigation indicated the presence of antibodies for at least one of the 23 serovars of Leptospira spp. in 36.6% (37/101) of the samples analyzed, with titers ranging from 100 to 1600. The most observed serovars were Panama (17.8%), Ballum (5.9%), Butembo (5.9%), Canicola (5.9%), Hardjo (4.9%), and Tarassovi (3.9%); no samples were seropositive for Brucella abortus. Decreased forest cover and edge density were the landscape factors that had a significant relationship with Leptospira spp. exposure, indicating that habitat fragmentation may influence contact with the pathogen. The data generated in this study demonstrate the importance of understanding how changes in landscape structure affect exposure to pathogenic microorganisms of zoonotic relevance. Hence, improving epidemiological research and understanding primates' ecological role in these settings can help improve environmental surveillance and conservation strategies for primate populations in different landscapes.
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Affiliation(s)
- Elisandro O Dos Santos
- Laboratório de Saúde Única, Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais da Universidade Federal de Santa Maria (UFSM), Santa Maria, Brazil
| | - Vinícius F Klain
- Laboratório de Primatologia, Escola de Ciências da Saúde e da Vida da Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Sebastián B Manrique
- Laboratório de Primatologia, Escola de Ciências da Saúde e da Vida da Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Rogério O Rodrigues
- Laboratório de Leptospirose do Instituto de Pesquisas Veterinárias Desidério Finamor, Secretaria Estadual de Agricultura, Pecuária e Desenvolvimento Rural, Eldorado do Sul, Brazil
| | - Helton F Dos Santos
- Núcleo de Estudos e Pesquisas em Animais Silvestres, Laboratório Central de Diagnóstico de Patologias Aviárias, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Santa Maria, Brazil
| | - Luís A Sangioni
- Laboratório de Saúde Única, Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais da Universidade Federal de Santa Maria (UFSM), Santa Maria, Brazil
| | - Maurício G Dasso
- Laboratório de Leptospirose do Instituto de Pesquisas Veterinárias Desidério Finamor, Secretaria Estadual de Agricultura, Pecuária e Desenvolvimento Rural, Eldorado do Sul, Brazil
| | - Marco A B de Almeida
- Divisão de Vigilância Ambiental em Saúde, Centro Estadual de Vigilância em Saúde, Secretaria de Estado da Saúde, Porto Alegre, Brazil
| | - Edmilson Dos Santos
- Divisão de Vigilância Ambiental em Saúde, Centro Estadual de Vigilância em Saúde, Secretaria de Estado da Saúde, Porto Alegre, Brazil
| | - Lucas C Born
- Divisão de Vigilância Ambiental em Saúde, Centro Estadual de Vigilância em Saúde, Secretaria de Estado da Saúde, Porto Alegre, Brazil
| | - José Reck
- Laboratório de Parasitologia do Instituto de Pesquisas Veterinárias Desidério Finamor, Secretaria Estadual de Agricultura, Pecuária e Desenvolvimento Rural, Eldorado do Sul, Brazil
| | - Sônia de Avila Botton
- Laboratório de Saúde Única, Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais da Universidade Federal de Santa Maria (UFSM), Santa Maria, Brazil
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13
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Calvopiña M, Romero-Alvarez D, Vasconez E, Valverde-Muñoz G, Trueba G, Garcia-Bereguiain MA, Orlando SA. Leptospirosis in Ecuador: Current Status and Future Prospects. Trop Med Infect Dis 2023; 8:tropicalmed8040202. [PMID: 37104328 PMCID: PMC10141158 DOI: 10.3390/tropicalmed8040202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/09/2023] [Accepted: 03/14/2023] [Indexed: 04/28/2023] Open
Abstract
The location of Ecuador-an equatorial nation-favors the multiplication and dispersal of the Leptospira genus both on the Pacific Coast and in the Amazon tropical ecoregions. Nevertheless, leptospirosis epidemiology has not been fully addressed, even though the disease has been recognized as a significant public health problem in the country. The purpose of this literature review is to update knowledge on the epidemiology and geographical distribution of Leptospira spp. and leptospirosis in Ecuador to target future research and develop a national control strategy. A retrospective literature search using five international, regional, and national databases on Leptospira and leptospirosis including humans, animals, and environmental isolations of the bacteria and the disease incidence in Ecuador published between 1919 and 2022 (103 years) with no restriction on language or publication date was performed. We found and analyzed 47 publications including 22 of humans, 19 of animals, and two of the environments; three of these covered more than one of these topics, and one covered all three (i.e., One Health). Most (60%) of the studies were conducted in the Coastal ecoregion. Twenty-four (51%) were published in international journals, and 27 (57%) were in Spanish. A total of 7342 human and 6314 other animal cases were studied. Leptospirosis was a frequent cause of acute undifferentiated febrile illness in the Coast and Amazon and was associated with rainfall. All three major clusters of Leptospira-pathogenic, intermediate, and saprophytic-were identified from both healthy and febrile humans, the environment, and animals; moreover, nine species and 29 serovars were recorded over the three Ecuadorian ecoregions. Leptospira infections were diagnosed in livestock, companion, and wild animals from the Amazon and the Coast regions along with sea lions from the Galápagos Islands. Microscopic-agglutination test was the diagnostic tool most widely used. Three reviews covering national data on outpatients and inpatients determined the varied annual incidence and mortality rate, with males being more commonly affected. No human cases have been reported in the Galápagos Islands. Genomic sequences of three pathogenic Leptospira were reported. No studies on clinical ground, antibiotic resistance, or treatment were reported, nor were control programs or clinical-practice guidelines found. The published literature demonstrated that leptospirosis was and still is an endemic disease with active transmission in the four geoclimatic regions of Ecuador including the Galápagos Islands. Animal infections, distributed in mainland and insular Ecuador, pose a significant health risk for humans. Nationwide epidemiological surveys-encouraging more research on the fauna and environment with appropriate sampling design on risk factors for human and animal leptospirosis, Leptospira genotyping, increased laboratory capability, and readily available official data-are required to improve our understanding of transmission patterns and to develop effective national intervention strategies with the intention of applying One Health approaches.
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Affiliation(s)
- Manuel Calvopiña
- One Health Research Group, Facultad de Medicina, Universidad de Las Américas (UDLA), Quito 170124, Ecuador
| | - Daniel Romero-Alvarez
- One Health Research Group, Facultad de Medicina, Universidad de Las Américas (UDLA), Quito 170124, Ecuador
- Biodiversity Institute and Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS 66045, USA
| | - Eduardo Vasconez
- One Health Research Group, Facultad de Medicina, Universidad de Las Américas (UDLA), Quito 170124, Ecuador
| | - Gabriela Valverde-Muñoz
- Proyecto de Fortalecimiento de la Atención Integral de Personas con Discapacidad, Ministerio de Salud Pública, Quito 170702, Ecuador
| | - Gabriel Trueba
- Institute of Microbiology, Universidad San Francisco de Quito, Quito 170901, Ecuador
| | - Miguel Angel Garcia-Bereguiain
- One Health Research Group, Facultad de Medicina, Universidad de Las Américas (UDLA), Quito 170124, Ecuador
- Universidad Latinoamerica de Costa Rica, San Jose 11501, Costa Rica
| | - Solon Alberto Orlando
- Instituto Nacional de Investigación en Salud Pública INSPI, Quito 3961, Ecuador
- Universidad Espíritu Santo, Guayaquil 092301, Ecuador
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14
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Mazzanti M, Scialfa E, Rivero M, Passucci J. Epidemiology of Leptospira spp. infection in a beef cattle area of Argentina. Front Vet Sci 2023; 10:1083024. [PMID: 36896293 PMCID: PMC9989276 DOI: 10.3389/fvets.2023.1083024] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 02/01/2023] [Indexed: 02/23/2023] Open
Abstract
Leptospirosis is an infectious disease caused by pathogenic Leptospira that affect humans and animals. This disease is complex and non-eradicable in nature. Therefore, the understanding of it is epidemiology in different environments is crucial to implement prevention and control measures. The prevalence of Leptospira infection in beef cattle farms is affected by multiple environmental, management and individual factors. In this study, a cross-sectional serological survey was carried on to estimate the prevalence of Leptospira antibodies in beef cattle in Tandil and Ayacucho Departments (Buenos Aires Province) and to identify risk factors and spatial clusters associated with seropositivity. Using a probabilistic two-stage sampling, 25 farms and 15 animals per farm were selected. The Microagglutination Test was used to analize all serum samples. Bivariate and multivariate analyses were performed. Seventy-three out of 375 cows were seropositive, representing a positivity rate of 19.47% (95% CI: 10.51-28.42), with Sejroe and Pomona being the most reactive serogroups: 9.33% (95% CI: 6.26-12.41) and 8.27% (95% CI: 5.35-11.19), respectively. The prevalence in Ayacucho was 23.11% (95% CI: 10.05-36.17), and in Tandil, 14% (95% CI: 3.25-24.75). The animals from Ayacucho presented 2.01 (1.16-3.49) more chances of being positive compared with those from Tandil (p < 0.01). After the Generalized Linear Mixed Model (GLMM) with random effect of farm-level risk, the presence of lagoons (OR: 7.32, 95% CI: 1.68-31.8, p < 0.05) and undulating terrain (OR: 0.24, 95% CI: 0.07-0.74, p < 0.05) were associated with bovine leptospirosis. Four spatial clusters with higher rates of seropositivity were detected. A new GLMM was performed with the significant variables detected in the first GLMM and a new variable, "being inside the spatial cluster," being the only one that remained significant (OR: 9.58, 95% CI: 3.39-27.08, p < 0.0001). The animals inside the clusters belonged to farms with a greater presence of creeks (OR: 9.03, 95% CI: 3.37-24.18, p < 0.0001), higher accumulated rainfall (OR: 1.01, 95% CI: 1-1.01, p < 0.0001) and less undulating terrain (OR: 0.18, 95% CI: 0.10-0.35, p < 0.0001). We conclude that Leptospira is seroprevalent in beef cattle in Tandil and Ayacucho Departments, especially in the latter, where the largest cattle farms are located. Prevalence of seropositivity animals was associated with selected environmental risk factors.
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Affiliation(s)
- Mariana Mazzanti
- Centro de Investigación Veterinaria de Tandil (CIVETAN), UNCPBA-CICPBA-CONICET, Tandil, Buenos Aires, Argentina.,CONICET, Buenos Aires, Argentina
| | - Exequiel Scialfa
- Departamento Zoonosis Rurales Azul, Ministerio de Salud de la Provincia de Buenos Aires, Azul, Buenos Aires, Argentina.,Facultad de Agronomía, Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), Azul, Buenos Aires, Argentina
| | - Mariana Rivero
- Centro de Investigación Veterinaria de Tandil (CIVETAN), UNCPBA-CICPBA-CONICET, Tandil, Buenos Aires, Argentina.,Facultad de Agronomía, Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), Azul, Buenos Aires, Argentina.,Universidad Nacional del Centro de la Provincia de Buenos Aires, Facultad de Ciencias Veterinarias, SAMP, Tandil, Buenos Aires, Argentina
| | - Juan Passucci
- Centro de Investigación Veterinaria de Tandil (CIVETAN), UNCPBA-CICPBA-CONICET, Tandil, Buenos Aires, Argentina.,Universidad Nacional del Centro de la Provincia de Buenos Aires, Facultad de Ciencias Veterinarias, SAMP, Tandil, Buenos Aires, Argentina
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15
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Parra Barrera EL, Bello S, Gallego-Lopez GM, Atero N, Reyes Santamaría E, Bautista A. Distribution, frequency and clinical presentation of leptospirosis and coinfections: a systematic review protocol. BMJ Open 2022; 12:e055187. [PMID: 36526310 PMCID: PMC9764663 DOI: 10.1136/bmjopen-2021-055187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
INTRODUCTION Leptospirosis is a zoonotic disease with high prevalence in low-income and middle-income countries and tropical and subtropical regions. The clinical symptoms of the disease are similar to symptoms presented by other endemic infectious diseases that could be present simultaneously. Thus, leptospirosis could be masked by similar infections like dengue, malaria, hantavirus, melioidosis and borreliosis, among others. Therefore, leptospirosis could present itself as an under-reported infection or as a coinfection with another pathogen, as has been reported in the literature. However, there is a lack of documented evidence about the specific risk factors of leptospirosis infection, the symptoms, the coinfection's mortality and the frequency of coinfection. Additionally, leptospirosis coinfections have not been considered a neglected public health concern. Therefore, this systematic review aims to evaluate published articles that show the risk factors associated with leptospirosis infection and coinfection with other pathogens. METHODS AND ANALYSIS The search process to identify eligible studies will be conducted including the LILACS, ProQuest, PubMed and Scopus databases with no restriction in terms of publication date. Also, grey literature will be included in the research. Authors will independently screen the title and abstracts of the articles identified from the search using Rayyan free software. Eligibility criteria include peer-reviewed research articles written in English or Spanish, including observational studies, cohorts, case-control, cross-sectional, ecological studies and report cases. The systematic review will include studies that report descriptions of leptospirosis cases with coinfection or co-occurrence. The search will be accomplished by articles from 1950 to May 2022. The data will be extracted in a standard extraction form using an Excel format. ETHICS AND DISSEMINATION Results will be published in a peer-reviewed journal. Also, findings will be disseminated through scientific meetings. Ethical approval will not be required as this is a systematic review and primary data will be not collected or included. PROSPERO REGISTRATION NUMBER CRD42021234754.
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Affiliation(s)
- Eliana L Parra Barrera
- Grupo de Salud Ambiental y Laboral, Instituto Nacional de Salud, Bogotá, Colombia
- Subdirección de Estudios Clínicos y Epidemiología clínica, Fundacion Santa Fe de Bogota, Bogota, Colombia
- Multidisciplinary Initiative for Collaborative Research in Bacterial Resistance (MICROB-R), Santiago, RM, Chile
| | - Solmara Bello
- Subdirección de Estudios Clínicos y Epidemiología clínica, Fundacion Santa Fe de Bogota, Bogota, Colombia
- Grupo de Microbiología, Instituto Nacional de Salud, Bogotá, Colombia
| | - Gina M Gallego-Lopez
- Morgridge Institute for Research, Madison, WI, 53706, United States of America, Madison, Wisconsin, USA
- Department of Medical Microbiology and Immunology, University of Wisconsin, Madison, Wisconsin, USA
| | - Nicolhole Atero
- Escuela de Medicina Veterinaria, Facultad de Agronomía e Ingeniería Forestal, Facultad de Ciencias Biológicas y Facultad de Medicina, Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - Elízabeth Reyes Santamaría
- Departamento de Medicina interna, Fundación Santa Fe de Bogotá, Bogotá, Colombia
- Departamento de Medicina critica y cuidado intensivo, Fundación Santa Fe de Bogotá, Bogotá, Colombia
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16
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Rao G, Kahler A, Voth-Gaeddert LE, Cranford H, Libbey S, Galloway R, Molinari NA, Ellis EM, Yoder JS, Mattioli MC, Ellis BR. Microbial Characterization, Factors Contributing to Contamination, and Household Use of Cistern Water, U.S. Virgin Islands. ACS ES&T WATER 2022; 2:2634-2644. [PMID: 36530952 PMCID: PMC9745795 DOI: 10.1021/acsestwater.2c00389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/13/2022] [Accepted: 09/20/2022] [Indexed: 05/09/2023]
Abstract
Households in the United States Virgin Islands (USVI) heavily rely on roof-harvested rainwater stored in cisterns for their daily activities. However, there are insufficient data on cistern water microbiological and physicochemical characteristics to inform appropriate cistern water management. Cistern and kitchen tap water samples were collected from 399 geographically representative households across St. Croix, St. Thomas, and St. John and an administered survey captured household site and cistern characteristics and water use behaviors. Water samples were analyzed for Escherichia coli by culture, and a subset of cistern water samples (N = 47) were analyzed for Salmonella, Naegleria fowleri, pathogenic Leptospira, Cryptosporidium, Giardia, and human-specific fecal contamination using real-time polymerase chain reaction (PCR). Associations between E. coli cistern contamination and cistern and site characteristics were evaluated to better understand possible mechanisms of contamination. E. coli was detected in 80% of cistern water samples and in 58% of kitchen tap samples. For the subset of samples tested by PCR, at least one of the pathogens was detected in 66% of cisterns. Our results suggest that covering overflow pipes with screens, decreasing animal presence at the household, and preventing animals or insects from entering the cisterns can decrease the likelihood of E. coli contamination in USVI cistern water.
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Affiliation(s)
- Gouthami Rao
- Division
of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia 30329, United States
| | - Amy Kahler
- Division
of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia 30329, United States
| | - Lee E. Voth-Gaeddert
- Division
of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia 30329, United States
| | - Hannah Cranford
- United
States Virgin Islands Department of Health, St. Croix, U.S. Virgin Islands 00820, United States
| | - Stephen Libbey
- Love
City Strong, St. John, U.S. Virgin Islands 00830, United States
| | - Renee Galloway
- Division
of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia 30329, United States
| | - Noelle-Angelique Molinari
- Division
of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia 30329, United States
| | - Esther M. Ellis
- United
States Virgin Islands Department of Health, St. Croix, U.S. Virgin Islands 00820, United States
| | - Jonathan S. Yoder
- Division
of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia 30329, United States
| | - Mia C. Mattioli
- Division
of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia 30329, United States
| | - Brett R. Ellis
- United
States Virgin Islands Department of Health, St. Croix, U.S. Virgin Islands 00820, United States
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17
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Gorman M, Xu R, Prakoso D, Salvador LCM, Rajeev S. Leptospira enrichment culture followed by ONT metagenomic sequencing allows better detection of Leptospira presence and diversity in water and soil samples. PLoS Negl Trop Dis 2022; 16:e0010589. [DOI: 10.1371/journal.pntd.0010589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 11/07/2022] [Accepted: 10/10/2022] [Indexed: 11/06/2022] Open
Abstract
Background
Leptospirosis, a life-threatening disease in humans and animals, is one of the most widespread global zoonosis. Contaminated soil and water are the major transmission sources in humans and animals. Clusters of disease outbreaks are common during rainy seasons.
Methodology/Principal findings
In this study, to detect the presence of Leptospira, we applied PCR, direct metagenomic sequencing, and enrichment culture followed by PCR and metagenomic sequencing on water and soil samples. Direct sequencing and enrichment cultures followed by PCR or sequencing effectively detected pathogenic and nonpathogenic Leptospira compared to direct PCR and 16S amplification-based metagenomic sequencing in soil or water samples. Among multiple culture media evaluated, Ellinghausen-McCullough-Johnson-Harris (EMJH) media containing antimicrobial agents was superior in recovering and detecting Leptospira from the environmental samples. Our results show that enrichment culture followed by PCR can be used to confirm the presence of pathogenic Leptospira in environmental samples. Additionally, metagenomic sequencing on enrichment cultures effectively detects the abundance and diversity of Leptospira spp. from environmental samples.
Conclusions/Significance
The selection of methodology is critical when testing environmental samples for the presence of Leptospira. Selective enrichment culture improves Leptospira detection efficacy by PCR or metagenomic sequencing and can be used successfully to understand the presence and diversity of pathogenic Leptospira during environmental surveillance.
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Diaz EA, Luna L, Burgos-Mayorga A, Donoso G, Guzman DA, Baquero MI, Pearson T, Barragan VA. First detection of Leptospira santarosai in the reproductive track of a boar: A potential threat to swine production and public health. PLoS One 2022; 17:e0274362. [PMID: 36129918 PMCID: PMC9491572 DOI: 10.1371/journal.pone.0274362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 08/25/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Leptospirosis causes significant economic losses and is an occupational risk in the swine industry, especially in developing tropical regions where social and geoclimatic conditions are favorable for the transmission of this disease. Although vaccination can reduce infection risk, efficacy is diminished if local genetic and antigenic variants of the pathogen are not accounted for in the vaccine. Identifying and characterizing strains hosts, and potential mechanisms of transmission is therefore critical for public health mitigation practices. METHODOLOGY/PRINCIPAL FINDINGS Our study was conducted on a rural breeding farm in Ecuador, where we used a PCR assay that targets lipL32 to detect Leptospira spp. and targeted gene sequencing to identify Leptospira santarosai in the kidneys, testicles, and ejaculate of a vaccinated boar. MAT results showed low titers against serovars found in the vaccine, but the MAT panel did not include serovars of L. santarosai. The boar showed no symptoms of leptospirosis but did show blood in the semen. However, no postmortem histopathological lesions were observed tissue samples. Vaccinated sows that were artificially inseminated with the semen from this boar had reproductive problems, suggesting that transmission had occurred. This is the first documented case of Leptospira santarosai in the reproductive tract of a boar. CONCLUSIONS/SIGNIFICANCE As L. santarosai is pathogenic in other livestock species and humans, our finding highlights the need to evaluate the prevalence and epidemiological significance of this pathogen in livestock and consider the possibility of venereal transmission. In addition, further studies are needed to identify and characterize local serovars that may impact diagnosis and vaccination programs to better control leptospirosis in livestock and spillover into the human population.
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Affiliation(s)
- Eduardo A. Diaz
- Hospital de Fauna Silvestre TUERI, Escuela de Medicina Veterinaria, Universidad San Francisco de Quito USFQ, Quito, Ecuador
- Instituto de Biodiversidad Tropical, Laboratorio de Salud Animal, Universidad San Francisco de Quito USFQ, Quito, Ecuador
| | - Ligia Luna
- Instituto de Microbiología, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito USFQ, Quito, Ecuador
| | - Ana Burgos-Mayorga
- Facultad de Ciencias Pecuarias, Medicina Veterinaria, Escuela Superior Politécnica de Chimborazo (ESPOCH), Riobamba, Ecuador
| | - Gustavo Donoso
- Hospital de Fauna Silvestre TUERI, Escuela de Medicina Veterinaria, Universidad San Francisco de Quito USFQ, Quito, Ecuador
| | - Diego A. Guzman
- Instituto de Microbiología, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito USFQ, Quito, Ecuador
| | - María Ines Baquero
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Central del Ecuador, Quito, Ecuador
| | - Talima Pearson
- Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, Arizona, United States of America
| | - Veronica Alexandra Barragan
- Instituto de Microbiología, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito USFQ, Quito, Ecuador
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Sluydts V, Sarathchandra SR, Piscitelli AP, Van Houtte N, Gryseels S, Mayer-Scholl A, Bier NS, Htwe NM, Jacob J. Ecology and distribution of Leptospira spp., reservoir hosts and environmental interaction in Sri Lanka, with identification of a new strain. PLoS Negl Trop Dis 2022; 16:e0010757. [PMID: 36112668 PMCID: PMC9518908 DOI: 10.1371/journal.pntd.0010757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 09/28/2022] [Accepted: 08/22/2022] [Indexed: 11/19/2022] Open
Abstract
Leptospirosis is a neglected zoonotic disease and one of the leading causes of zoonotic morbidity and mortality, particularly in resource-poor settings. Sri Lanka has one of the highest disease burdens worldwide, with occasional endemic leptospirosis outbreaks (2008, 2011). Rodents are considered the main wildlife reservoir, but due to a scarcity of studies it is unclear which particular species contributes to bacterial transmission and reservoir maintenance in this multi-host multi-parasite system. Several rodent species act as agricultural pests both in rice fields and in food storage facilities. To unravel the interactions among the small mammal communities, pathogenic Leptospira spp. and human transmission pathways, we collected animals from smallholder food storage facilities, where contact between humans and small mammals is most likely, and screened kidney tissue samples for Leptospira spp. using PCR. Samples were collected in three climatic zones along a rainfall gradient. Pathogenic Leptospira spp. were detected in small mammal communities in 37 (74%) out of 50 sampled farms and 61 (12%) out of 500 collected individuals were infected. The small mammal community was comprised of Rattus rattus (87.6%), Suncus shrews (8.8%), Bandicota spp. (2.8%) and Mus booduga (0.8%). Three pathogenic Leptospira spp. were identified, L. borgpetersenii (n = 34), L. interrogans (n = 15), and L. kirschneri (n = 1). Suncus shrews were commonly infected (32%), followed by B. indica (23%) and R. rattus (10%). L. borgpetersenii strains similar to strains previously extracted from human clinal samples in Sri Lanka were detected in R. rattus and Suncus shrews. L. interrogans was observed in R. rattus only. A single L. kirschneri infection was found in M. booduga. The presence of human pathogenic Leptospira species in an agricultural pest rodent (R. rattus) and in commensal shrews (Suncus) calls for management of these species in commensal settings. Further investigation of the interplay between pathogen and reservoir population dynamics, overlap in geographic range and the extent of spill-over to humans in and around rural settlements is required to identify optimal management approaches.
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Affiliation(s)
- Vincent Sluydts
- Julius Kühn-Institute, Federal Research Institute for Cultivated Plants, Institute for Plant Protection in Horticulture and Forests, Vertebrate Research, Münster, Germany
- University of Antwerp, Department of Biology, Evolutionary Ecology Group, University of Antwerp, Wilrijk, Belgium
| | | | - Anna Pia Piscitelli
- University of Antwerp, Department of Biology, Evolutionary Ecology Group, University of Antwerp, Wilrijk, Belgium
| | - Natalie Van Houtte
- University of Antwerp, Department of Biology, Evolutionary Ecology Group, University of Antwerp, Wilrijk, Belgium
| | - Sophie Gryseels
- University of Antwerp, Department of Biology, Evolutionary Ecology Group, University of Antwerp, Wilrijk, Belgium
| | - Anne Mayer-Scholl
- Federal Institute for Risk Assessment, Department of Biological Safety, Berlin, Germany
| | - Nadja Seyhan Bier
- Federal Institute for Risk Assessment, Department of Biological Safety, Berlin, Germany
| | - Nyo Me Htwe
- University of Antwerp, Department of Biology, Evolutionary Ecology Group, University of Antwerp, Wilrijk, Belgium
| | - Jens Jacob
- Julius Kühn-Institute, Federal Research Institute for Cultivated Plants, Institute for Plant Protection in Horticulture and Forests, Vertebrate Research, Münster, Germany
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20
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Diverse lineages of pathogenic Leptospira species are widespread in the environment in Puerto Rico, USA. PLoS Negl Trop Dis 2022; 16:e0009959. [PMID: 35584143 PMCID: PMC9154103 DOI: 10.1371/journal.pntd.0009959] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 05/31/2022] [Accepted: 04/04/2022] [Indexed: 01/04/2023] Open
Abstract
Background
Leptospirosis, caused by Leptospira bacteria, is a common zoonosis worldwide, especially in the tropics. Reservoir species and risk factors have been identified but surveys for environmental sources are rare. Furthermore, understanding of environmental Leptospira containing virulence associated genes and possibly capable of causing disease is incomplete, which may convolute leptospirosis diagnosis, prevention, and epidemiology.
Methodology/Principal findings
We collected environmental samples from 22 sites in Puerto Rico during three sampling periods over 14-months (Dec 2018-Feb 2020); 10 water and 10 soil samples were collected at each site. Samples were screened for DNA from potentially pathogenic Leptospira using the lipL32 PCR assay and positive samples were sequenced to assess genetic diversity. One urban site in San Juan was sampled three times over 14 months to assess persistence in soil; live leptospires were obtained during the last sampling period. Isolates were whole genome sequenced and LipL32 expression was assessed in vitro.
We detected pathogenic Leptospira DNA at 15/22 sites; both soil and water were positive at 5/15 sites. We recovered lipL32 sequences from 83/86 positive samples (15/15 positive sites) and secY sequences from 32/86 (10/15 sites); multiple genotypes were identified at 12 sites. These sequences revealed significant diversity across samples, including four novel lipL32 phylogenetic clades within the pathogenic P1 group. Most samples from the serially sampled site were lipL32 positive at each time point. We sequenced the genomes of six saprophytic and two pathogenic Leptospira isolates; the latter represent a novel pathogenic Leptospira species likely belonging to a new serogroup.
Conclusions/Significance
Diverse and novel pathogenic Leptospira are widespread in the environment in Puerto Rico. The disease potential of these lineages is unknown but several were consistently detected for >1 year in soil, which could contaminate water. This work increases understanding of environmental Leptospira diversity and should improve leptospirosis surveillance and diagnostics.
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Abstract
Leptospirosis is a zoonotic disease caused by infection with pathogenic leptospires. Consistent with recent studies by other groups, leptospires were isolated from 89 out of 110 (80.9%) soil or water samples from varied locations in the Philippines in our surveillance study, indicating that leptospires might have a life cycle that does not involve animal hosts. However, despite previous work, it has not been confirmed whether leptospires multiply in the soil environment under various experimental conditions. Given the fact that the case number of leptospirosis is increased after flood, we hypothesized that waterlogged soil, which mimics the postflooding environment, could be a suitable condition for growing leptospires. To verify this hypothesis, pathogenic and saprophytic leptospires were seeded in the bottles containing 2.5 times as much water as soil, and bacterial counts in the bottles were measured over time. Pathogenic and saprophytic leptospires were found to increase their number in waterlogged soil but not in water or soil alone. In addition, leptospires were reisolated from soil in closed tubes for as long as 379 days. These results indicate that leptospires are in a resting state in the soil and are able to proliferate with increased water content in the environment. This notion is strongly supported by observations that the case number of leptospirosis is significantly higher in rainy seasons and increased after flood. Therefore, we reached the following conclusion: environmental soil is a potential reservoir of leptospires. IMPORTANCE Since research on Leptospira has focused on pathogenic leptospires, which are supposed to multiply only in animal hosts, the life cycle of saprophytic leptospires has long been a mystery. This study demonstrates that both pathogenic and saprophytic leptospires multiply in the waterlogged soil, which mimics the postflooding environment. The present results potentially explain why leptospirosis frequently occurs after floods. Therefore, environmental soil is a potential reservoir of leptospires and leptospirosis is considered an environment-borne as well as a zoonotic disease. This is a significant report to reveal that leptospires multiply under environmental conditions, and this finding leads us to reconsider the ecology of leptospires.
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Miłobedzka A, Ferreira C, Vaz-Moreira I, Calderón-Franco D, Gorecki A, Purkrtova S, Dziewit L, Singleton CM, Nielsen PH, Weissbrodt DG, Manaia CM. Monitoring antibiotic resistance genes in wastewater environments: The challenges of filling a gap in the One-Health cycle. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127407. [PMID: 34629195 DOI: 10.1016/j.jhazmat.2021.127407] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 09/22/2021] [Accepted: 09/29/2021] [Indexed: 05/10/2023]
Abstract
Antibiotic resistance (AR) is a global problem requiring international cooperation and coordinated action. Global monitoring must rely on methods available and comparable across nations to quantify AR occurrence and identify sources and reservoirs, as well as paths of AR dissemination. Numerous analytical tools that are gaining relevance in microbiology, have the potential to be applied to AR research. This review summarizes the state of the art of AR monitoring methods, considering distinct needs, objectives and available resources. Based on the overview of distinct approaches that are used or can be adapted to monitor AR, it is discussed the potential to establish reliable and useful monitoring schemes that can be implemented in distinct contexts. This discussion places the environmental monitoring within the One-Health approach, where two types of risk, dissemination across distinct environmental compartments, and transmission to humans, must be considered. The plethora of methodological approaches to monitor AR and the variable features of the monitored sites challenge the capacity of the scientific community and policy makers to reach a common understanding. However, the dialogue between different methods and the production of action-oriented data is a priority. The review aims to warm up this discussion.
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Affiliation(s)
- Aleksandra Miłobedzka
- Department of Water Technology and Environmental Engineering, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic; Institute of Evolutionary Biology, University of Warsaw, Warsaw, Poland.
| | - Catarina Ferreira
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
| | - Ivone Vaz-Moreira
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
| | | | - Adrian Gorecki
- Department of Environmental Microbiology and Biotechnology, Institute of Microbiology, Faculty of Biology, University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland
| | - Sabina Purkrtova
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Lukasz Dziewit
- Department of Environmental Microbiology and Biotechnology, Institute of Microbiology, Faculty of Biology, University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland
| | - Caitlin M Singleton
- Department of Chemistry and Bioscience, Center for Microbial Communities, Aalborg University, Aalborg, Denmark
| | - Per Halkjær Nielsen
- Department of Chemistry and Bioscience, Center for Microbial Communities, Aalborg University, Aalborg, Denmark
| | | | - Célia M Manaia
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal.
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Chieng Raymond SC. Leptospirosis. WIKIJOURNAL OF MEDICINE 2022. [DOI: 10.15347/wjm/2022.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Leptospirosis is a blood infection caused by the bacterium Leptospira. Signs and symptoms can range from none to mild (headaches, muscle pains, and fevers) to severe (bleeding in the lungs or meningitis). Weil's disease, the acute, severe form of leptospirosis, causes the infected individual to become jaundiced (skin and eyes become yellow), develop kidney failure, and bleed. Pulmonary hemorrhage in association with leptospirosis is known as "severe pulmonary haemorrhage syndrome". More than ten genetic types of Leptospira, which are a type of a spirochaete, cause disease in humans. Both wild and domestic animals can spread the disease, most commonly rodents. The bacteria are spread to humans through animal urine, or water and soil contaminated with animal urine, coming into contact with the eyes, mouth, nose or breaks in the skin. In developing countries, the disease occurs most commonly in farmers and low-income people who live in areas with poor sanitation. In developed countries, it occurs during heavy downpours and can affect those involved in outdoor activities in warm and wet areas. Diagnosis is typically by testing for antibodies against the bacteria or finding bacterial DNA in the blood. Efforts to prevent the disease include protective equipment to block contact when working with potentially infected animals, washing after contact, and reducing rodents in areas where people live and work. The antibiotic doxycycline is effective in preventing leptospirosis infection. Human vaccines are of limited usefulness; vaccines for other animals are more widely available. Treatment when infected is with antibiotics such as doxycycline, penicillin, or ceftriaxone. The overall risk of death is 5–10%. However, when the lungs are involved, the risk of death increases to the range of 50–70%. It is estimated that one million people worldwide are infected by leptospirosis every year, causing approximately 58,900 deaths. The disease is most common in tropical areas of the world but may occur anywhere. Outbreaks may arise after heavy rainfall. The disease was first described by physician Adolf Weil in 1886 in Germany. Infected animals may have no, mild or severe symptoms. These may vary by the type of animal. In some animals Leptospira live in the reproductive tract, leading to transmission during mating.
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Casanovas-Massana A, Souza FN, Curry M, de Oliveira D, de Oliveira AS, Eyre MT, Santiago D, Santos MA, Serra RMR, Lopes E, Xavier BIA, Diggle PJ, Wunder EA, Reis MG, Ko AI, Costa F. Effect of Sewerage on the Contamination of Soil with Pathogenic Leptospira in Urban Slums. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:15882-15890. [PMID: 34767339 PMCID: PMC9302045 DOI: 10.1021/acs.est.1c04916] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Leptospirosis is an environmentally transmitted zoonotic disease caused by pathogenic Leptospira spp. that affects poor communities worldwide. In urban slums, leptospirosis is associated with deficient sanitary infrastructure. Yet, the role of sewerage in the reduction of the environmental contamination with pathogenic Leptospira has not been explored. Here, we conducted a survey of the pathogen in soils surrounding open and closed sewer sections in six urban slums in Brazil. We found that soils surrounding conventionally closed sewers (governmental interventions) were 3 times less likely to contain pathogenic Leptospira (inverse OR 3.44, 95% CI = 1.66-8.33; p < 0.001) and contained a 6 times lower load of the pathogen (0.82 log10 units difference, p < 0.01) when compared to their open counterparts. However, no differences were observed in community-closed sewers (poor-quality closings performed by the slum dwellers). Human fecal markers (BacHum) were positively associated with pathogenic Leptospira even in closed sewers, and rat presence was not predictive of the presence of the pathogen in soils, suggesting that site-specific rodent control may not be sufficient to reduce the environmental contamination with Leptospira. Overall, our results indicate that sewerage expansion to urban slums may help reduce the environmental contamination with the pathogen and therefore reduce the risk of human leptospirosis.
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Affiliation(s)
- Arnau Casanovas-Massana
- Department of Epidemiology of Microbial Diseases, School of Public Health, Yale University, New Haven, Connecticut 06511, United States
| | - Fabio Neves Souza
- Instituto de Saúde Coletiva, Universidade Federal da Bahia, Salvador, Bahia 40110-040, Brazil; Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador, Bahia 40296-710, Brazil
| | - Melanie Curry
- Department of Epidemiology of Microbial Diseases, School of Public Health, Yale University, New Haven, Connecticut 06511, United States
| | - Daiana de Oliveira
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador, Bahia 40296-710, Brazil
| | - Anderson S. de Oliveira
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador, Bahia 40296-710, Brazil
| | - Max T. Eyre
- Instituto de Saúde Coletiva, Universidade Federal da Bahia, Salvador, Bahia 40110-040, Brazil; Centre for Health Informatics, Computing, and Statistics, Lancaster University Medical School, Lancaster LA1 4YW, United Kingdom
| | - Diogo Santiago
- Instituto de Saúde Coletiva, Universidade Federal da Bahia, Salvador, Bahia 40110-040, Brazil
| | - Maísa Aguiar Santos
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador, Bahia 40296-710, Brazil
| | - Rafael M. R. Serra
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador, Bahia 40296-710, Brazil
| | - Evelyn Lopes
- Instituto de Saúde Coletiva, Universidade Federal da Bahia, Salvador, Bahia 40110-040, Brazil
| | - Barbara IA Xavier
- Instituto de Saúde Coletiva, Universidade Federal da Bahia, Salvador, Bahia 40110-040, Brazil
| | - Peter J. Diggle
- Centre for Health Informatics, Computing, and Statistics, Lancaster University Medical School, Lancaster LA1 4YW, United Kingdom
| | - Elsio A. Wunder
- Department of Epidemiology of Microbial Diseases, School of Public Health, Yale University, New Haven, Connecticut 06511, United States; Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador, Bahia 40296-710, Brazil
| | - Mitermayer G. Reis
- Department of Epidemiology of Microbial Diseases, School of Public Health, Yale University, New Haven, Connecticut 06511, United States; Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador, Bahia 40296-710, Brazil; Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Bahia 40026-010, Brazil
| | - Albert I. Ko
- Department of Epidemiology of Microbial Diseases, School of Public Health, Yale University, New Haven, Connecticut 06511, United States; Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador, Bahia 40296-710, Brazil
| | - Federico Costa
- Department of Epidemiology of Microbial Diseases, School of Public Health, Yale University, New Haven, Connecticut 06511, United States; Instituto de Saúde Coletiva, Universidade Federal da Bahia, Salvador, Bahia 40110-040, Brazil; Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador, Bahia 40296-710, Brazil
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Moinet M, Wilkinson DA, Aberdein D, Russell JC, Vallée E, Collins-Emerson JM, Heuer C, Benschop J. Of Mice, Cattle, and Men: A Review of the Eco-Epidemiology of Leptospira borgpetersenii Serovar Ballum. Trop Med Infect Dis 2021; 6:tropicalmed6040189. [PMID: 34698305 PMCID: PMC8544700 DOI: 10.3390/tropicalmed6040189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/17/2021] [Accepted: 10/14/2021] [Indexed: 11/30/2022] Open
Abstract
In New Zealand (NZ), leptospirosis is a mostly occupational zoonosis, with >66% of the recently notified cases being farm or abattoir workers. Livestock species independently maintain Leptospira borgpetersenii serovar Hardjo and L. interrogans serovar Pomona, and both are included in livestock vaccines. The increasing importance in human cases of Ballum, a serovar associated with wildlife, suggests that wildlife may be an overlooked source of infection. Livestock could also act as bridge hosts for humans. Drawing from disease ecology frameworks, we chose five barriers to include in this review based on the hypothesis that cattle act as bridge hosts for Ballum. Using a narrative methodology, we collated published studies pertaining to (a) the distribution and abundance of potential wild maintenance hosts of Ballum, (b) the infection dynamics (prevalence and pathogenesis) in those same hosts, (c) Ballum shedding and survival in the environment, (d) the exposure and competency of cattle as a potential bridge host, and (e) exposure for humans as a target host of Ballum. Mice (Mus musculus), rats (Rattus rattus, R. norvegicus) and hedgehogs (Erinaceus europaeus) were suspected as maintenance hosts of Ballum in NZ in studies conducted in the 1970s–1980s. These introduced species are distributed throughout NZ, and are present on pastures. The role of other wildlife in Ballum (and more broadly Leptospira) transmission remains poorly defined, and has not been thoroughly investigated in NZ. The experimental and natural Ballum infection of cattle suggest a low pathogenicity and the possibility of shedding. The seroprevalence in cattle appears higher in recent serosurveys (3 to 14%) compared with studies from the 1970s (0 to 3%). This review identifies gaps in the knowledge of Ballum, and highlights cattle as a potential spillover host. Further studies are required to ascertain the role that wild and domestic species may play in the eco-epidemiology of Ballum in order to understand its survival in the environment, and to inform control strategies.
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Affiliation(s)
- Marie Moinet
- School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand; (D.A.W.); (D.A.); (E.V.); (J.M.C.-E.); (C.H.); (J.B.)
- Correspondence:
| | - David A. Wilkinson
- School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand; (D.A.W.); (D.A.); (E.V.); (J.M.C.-E.); (C.H.); (J.B.)
- New Zealand Food Safety Science and Research Centre, Hopkirk Research Institute, Palmerston North 4442, New Zealand
| | - Danielle Aberdein
- School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand; (D.A.W.); (D.A.); (E.V.); (J.M.C.-E.); (C.H.); (J.B.)
| | - James C. Russell
- Department of Statistics, School of Biological Sciences, University of Auckland, Auckland 1010, New Zealand;
| | - Emilie Vallée
- School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand; (D.A.W.); (D.A.); (E.V.); (J.M.C.-E.); (C.H.); (J.B.)
| | - Julie M. Collins-Emerson
- School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand; (D.A.W.); (D.A.); (E.V.); (J.M.C.-E.); (C.H.); (J.B.)
| | - Cord Heuer
- School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand; (D.A.W.); (D.A.); (E.V.); (J.M.C.-E.); (C.H.); (J.B.)
| | - Jackie Benschop
- School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand; (D.A.W.); (D.A.); (E.V.); (J.M.C.-E.); (C.H.); (J.B.)
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Seroprevalence and Associated Risk Factors of Leptospira interrogans Serogroup Sejroe Serovar Hardjo in Dairy Farms in and around Jimma Town, Southwestern Ethiopia. Vet Med Int 2021; 2021:6061685. [PMID: 34589199 PMCID: PMC8476285 DOI: 10.1155/2021/6061685] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 08/04/2021] [Accepted: 09/02/2021] [Indexed: 11/18/2022] Open
Abstract
A cross-sectional study was conducted on selected dairy farms in and around Jimma town, Oromia, southwestern Ethiopia from November 2019 to May 2020 to determine the seroprevalence of Leptospira interrogans serogroup Sejroe serovar Hardjo (L. hardjo). Furthermore, information was gathered on individual animal and herd level by using pretested semistructured questionnaire to assess associated risk factors. A stratified and simple random sampling procedure was used for the selection of dairy farms and individual animal's, respectively. Indirect enzyme-linked immunosorbent assay (I-ELISA) was used in this study to detect antibody against L. hardjo. Out of 384 animal's sera, 94 animals were seropositive against L. hardjo antibodies. From 77 dairy farms selected for the study, 57 of them were distinguished as positive for L. hardjo. The overall seroprevalence of leptospirosis caused by L. hardjo was 24.48% (95% CI: 20.18%–28.78%) and 74.03% (95% CI: 64.23%–83.82%) at individual animal and farm level, respectively. The result of multilogistic regression analysis revealed that management system (p < 0.05; OR = 4.25 (95% CI: 2.31–7.82)), hygienic status of the farm (p < 0.05; OR = 0.35 (95% CI: 0.20–0.61)), age of animals (p < 0.05; OR = 8.30 (95% CI: 1.87–36.89)), history of abortion (p < 0.05; OR = 8.37 (95% CI: 1.73–40.42)), herd size (p < 0.05; OR = 2.32 (95% CI: 1.17–4.61)), and access of rodents to the farm (p < 0.05; OR = 0.17 (95% CI: 0.03–0.86)) were significantly associated with the occurrence of L. hardjo infection. However, breed, parity, and introduction of new animals to the farm were insignificantly associated (p > 0.05). Management system of the animal, hygienic status of the farm, herd size, age of animals, previous history of abortion, and access of rodents to the farm were identified as potential risk factors of L. hardjo disease occurrence. Thus, limiting rodents contact with cattle and their feed and water as well as good sanitary practices and husbandry management should be undertaken.
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Md-Lasim A, Mohd-Taib FS, Abdul-Halim M, Mohd-Ngesom AM, Nathan S, Md-Nor S. Leptospirosis and Coinfection: Should We Be Concerned? INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18179411. [PMID: 34502012 PMCID: PMC8431591 DOI: 10.3390/ijerph18179411] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 08/05/2021] [Accepted: 08/23/2021] [Indexed: 11/16/2022]
Abstract
Pathogenic Leptospira is the causative agent of leptospirosis, an emerging zoonotic disease affecting animals and humans worldwide. The risk of host infection following interaction with environmental sources depends on the ability of Leptospira to persist, survive, and infect the new host to continue the transmission chain. Leptospira may coexist with other pathogens, thus providing a suitable condition for the development of other pathogens, resulting in multi-pathogen infection in humans. Therefore, it is important to better understand the dynamics of transmission by these pathogens. We conducted Boolean searches of several databases, including Google Scholar, PubMed, SciELO, and ScienceDirect, to identify relevant published data on Leptospira and coinfection with other pathogenic bacteria. We review the role of the host-microbiota in determining the synanthropic interaction of Leptospira sp. with other bacteria, thus creating a suitable condition for the leptospira to survive and persist successfully. We also discuss the biotic and abiotic factors that amplify the viability of Leptospira in the environment. The coinfection of leptospira with pathogenic bacteria has rarely been reported, potentially contributing to a lack of awareness. Therefore, the occurrence of leptospirosis coinfection may complicate diagnosis, long-lasting examination, and mistreatment that could lead to mortality. Identifying the presence of leptospirosis with other bacteria through metagenomic analysis could reveal possible coinfection. In conclusion, the occurrence of leptospirosis with other diseases should be of concern and may depend on the success of the transmission and severity of individual infections. Medical practitioners may misdiagnose the presence of multiple infections and should be made aware of and receive adequate training on appropriate treatment for leptospirosis patients. Physicians could undertake a more targeted approach for leptospirosis diagnosis by considering other symptoms caused by the coinfected bacteria; thus, more specific treatment could be given.
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Affiliation(s)
- Asmalia Md-Lasim
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, UKM, Bangi 43600, Selangor, Malaysia; (A.M.-L.); (S.N.); (S.M.-N.)
- Herbal Medicine Research Centre (HMRC), Institute for Medical Research (IMR), National Institue of Health (NIH), Ministry of Health, Shah Alam 40170, Selangor, Malaysia
| | - Farah Shafawati Mohd-Taib
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, UKM, Bangi 43600, Selangor, Malaysia; (A.M.-L.); (S.N.); (S.M.-N.)
- Correspondence: ; Tel.: +60-12-3807701
| | - Mardani Abdul-Halim
- Biotechnology Research Institute, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia;
| | - Ahmad Mohiddin Mohd-Ngesom
- Center for Toxicology and Health Risk, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Federal Territory of Kuala Lumpur, Malaysia;
| | - Sheila Nathan
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, UKM, Bangi 43600, Selangor, Malaysia; (A.M.-L.); (S.N.); (S.M.-N.)
| | - Shukor Md-Nor
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, UKM, Bangi 43600, Selangor, Malaysia; (A.M.-L.); (S.N.); (S.M.-N.)
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Taylor C, Brodbelt DC, Dobson B, Catchpole B, O'Neill DG, Stevens KB. Spatio-temporal distribution and agroecological factors associated with canine leptospirosis in Great Britain. Prev Vet Med 2021; 193:105407. [PMID: 34153840 PMCID: PMC8326249 DOI: 10.1016/j.prevetmed.2021.105407] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 04/24/2021] [Accepted: 06/02/2021] [Indexed: 02/06/2023]
Abstract
Leptospirosis is an important global zoonotic disease that affects a wide range of mammalian species. Canine leptospirosis outbreaks have been reported after metereological events such as flooding (eg. in Brazil and the United States of America) suggesting an environmental association, but there has been no such study in Great Britain (GB). The distribution of cases across GB is also unreported. Objectives of this study were to: (1) assess the spatio-temporal variation of leptospirosis test submissions (2) explore associations between agroecological risk factors and distribution of different canine leptospirosis serogroups in GB, and (3) generate probability of presence maps for the different serogroups. Data analysed comprised laboratory submissions (n = 3986) to IDEXX laboratories between 1st January 2009 and 31st December 2018 for PCR or MAT leptospirosis testing. Spatial and seasonal scan statistics were used to investigate spatial and temporal clustering of positive tests, logistic regression was used to identify significant agroecological risk factors for positive tests, and the Maxent algorithm was used to model the environmental niche of four serogroups. There was an increased risk of a positive test result in the West Midlands of England (relative risk = 2.16) and between October and January (relative risk = 1.54). Logistic regression identified season and region to be significantly associated with a positive diagnosis,with higher odds of a positive test in Autumn (OR = 1.86 95 %CI 1.29-2.69) and Winter (OR = 1.51, 95 %CI 1.02-2.23) and in the East (OR = 2.20, 95 %CI = 1.31-3.71) and West Midlands (OR = 2.32, 95 %CI 1.45-3.71). The increased test-positive proportion in Autumn together with the increased odds of a positive diagnosis in Autumn suggests there may be a seasonal pattern to the canine leptospirosis in GB. The most important variable associated with higher leptospirosis presence in all ecological niche models was higher average annual temperature. The importance and retention of other variables differed between serogroups. Overall, a higher probability of leptospirosis presence was predicted in southern England and a low probability in Scotland and northern England. Although leptospirosis vaccine usage provides protection against the majority of serogroups identified here, one is not represented in the currently licensed vaccine formulations and therefore leptospirosis should remain a differential diagnosis in vaccinated dogs demonstrating consistent clinical signs of the disease.
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Affiliation(s)
- C Taylor
- Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, United Kingdom.
| | - D C Brodbelt
- Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, United Kingdom
| | - B Dobson
- Imperial College London, Exhibition Rd, South Kensington, London, United Kingdom
| | - B Catchpole
- Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, United Kingdom
| | - D G O'Neill
- Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, United Kingdom
| | - K B Stevens
- Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, United Kingdom
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Díaz M, Jarrín-V P, Simarro R, Castillejo P, Tenea GN, Molina CA. The Ecuadorian Microbiome Project: a plea to strengthen microbial genomic research. NEOTROPICAL BIODIVERSITY 2021. [DOI: 10.1080/23766808.2021.1938900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- Magdalena Díaz
- Institute of Research on Zoonoses (CIZ), Central University of Ecuador, Quito, Ecuador
- Chemistry Engineering Faculty, Central University of Ecuador, Quito, Ecuador
| | - Pablo Jarrín-V
- Health and Environment Research Group, Universidad Regional Amazónica Ikiam, Tena, Ecuador
| | - Raquel Simarro
- Department of Biology, Geology, Physics and Inorganic Chemistry,ESCET, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | - Pablo Castillejo
- Faculty of Environmental Sciences, SEK International University, Quito, Ecuador
- Applied Sciences and Engineering Faculty, Universidad De Las Américas, Quito, Ecuador
| | - Gabriela N. Tenea
- Biofood and Nutraceutics Research and Development Group, Faculty of Engineering in Agricultural and Environmental Sciences, Technical University of the North, Ibarra, Ecuador
| | - C. Alfonso Molina
- Institute of Research on Zoonoses (CIZ), Central University of Ecuador, Quito, Ecuador
- Faculty of Veterinary Medicine and Zootechnics, Central University of Ecuador, Quito, Ecuador
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Houéménou H, Gauthier P, Houéménou G, Mama D, Alassane A, Socohou A, Dossou HJ, Badou S, Picardeau M, Tweed S, Leblanc M, Dobigny G. Pathogenic Leptospira and water quality in African cities: A case study of Cotonou, Benin. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 774:145541. [PMID: 33609844 DOI: 10.1016/j.scitotenv.2021.145541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 01/27/2021] [Accepted: 01/27/2021] [Indexed: 06/12/2023]
Abstract
Leptospirosis is a waterborne zoonosis (60,000 infections and 1 million deaths annually). Knowledge about the disease in the urban context is surprisingly rare, especially in Africa. Here, we provide the first study of leptospires in waters within an African city. A simple centrifugation-based method was developed to screen waterborne leptospires from remote or poorly areas. Major ions, trace elements, stable isotopes and pathogenic Leptospira were then seasonally investigated in 193 water samples from three neighborhoods of Cotonou (Benin) with different socio-environmental and hydrographic characteristics. Firstly, no leptospire was detected in tap waters. Secondly, although surface contamination cannot be excluded, one groundwater well was found leptospire positive. Thirdly, pathogenic Leptospira mainly contaminated surface waters of temporary and permanent ponds (9.5% and 27.3% of total prevalence, respectively). Isotopic signatures suggest that leptospires occurred in pond waters formed at the beginning of the rainy season following low to moderate rainfall events. Nevertheless, Leptospira-containing waters possess physico-chemical characteristics that are similar to the spectrum of waters sampled throughout the three sites, thus suggesting that Cotonou waters are widely compatible with Leptospira survival. The frequent contact with water exposes Cotonou inhabitants to the risk of leptospirosis which deserves more attention from public health authorities.
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Affiliation(s)
- Honoré Houéménou
- University of Avignon, Hydrogeology Laboratory, UMR EMMAH, Avignon, France; INE, Laboratory of Applied Hydrology, University of Abomey-Calavi, 01 B.P., 4521 Cotonou, Benin.
| | - Philippe Gauthier
- IRD, CBGP (UMR IRD-INRAE-Cirad-Montpellier SupAgro), MUSE, Montferrier-sur-Lez, France
| | - Gualbert Houéménou
- Laboratory of Research in Applied Biology, University of Abomey-Calavi, EPAC, Cotonou, Benin
| | - Daouda Mama
- INE, Laboratory of Applied Hydrology, University of Abomey-Calavi, 01 B.P., 4521 Cotonou, Benin
| | - Abdoukarim Alassane
- INE, Laboratory of Applied Hydrology, University of Abomey-Calavi, 01 B.P., 4521 Cotonou, Benin
| | - Akilou Socohou
- INE, Laboratory of Applied Hydrology, University of Abomey-Calavi, 01 B.P., 4521 Cotonou, Benin
| | - Henri-Joël Dossou
- Laboratory of Research in Applied Biology, University of Abomey-Calavi, EPAC, Cotonou, Benin; IGATE, Université d'Abomey-Calavi, Cotonou, Benin
| | - Sylvestre Badou
- Laboratory of Research in Applied Biology, University of Abomey-Calavi, EPAC, Cotonou, Benin
| | - Mathieu Picardeau
- Institut Pasteur de Paris, Laboratoire des Spirochètes, Paris, France
| | - Sarah Tweed
- G-EAU (UMR IRD-IRSTEA-Cirad-Agro Paris Tech-Montpellier SupAgro), Montpellier, France
| | - Marc Leblanc
- University of Avignon, Hydrogeology Laboratory, UMR EMMAH, Avignon, France
| | - Gauthier Dobigny
- IRD, CBGP (UMR IRD-INRAE-Cirad-Montpellier SupAgro), MUSE, Montferrier-sur-Lez, France; Laboratory of Research in Applied Biology, University of Abomey-Calavi, EPAC, Cotonou, Benin
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Iverson SA, Levy C, Yaglom HD, Venkat HL, Artus A, Galloway R, Guagliardo SAJ, Reynolds L, Kretschmer MJ, LaFerla Jenni ME, Woodward P, Reindel AA, Tarrant S, Sylvester T, Klein R, Mundschenk P, Sunenshine R, Schafer IJ. Clinical, diagnostic, and epidemiological features of a community-wide outbreak of canine leptospirosis in a low-prevalence region (Maricopa County, Arizona). J Am Vet Med Assoc 2021; 258:616-629. [PMID: 33683958 DOI: 10.2460/javma.258.6.616] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To describe clinical, diagnostic, and epidemiological features of an outbreak of leptospirosis in dogs in Maricopa County, Ariz, from January 2016 through June 2017. ANIMALS 71 case and 281 control dogs. PROCEDURES Cases were classified as confirmed, probable, suspect, or not a case on the basis of medical record data that fulfilled clinical, diagnostic, and epidemiological criteria. Potential exposures were assessed by owner survey. For the case-control investigation, control dogs were recruited through owner completion of a July 2017 survey. Summary statistics and ORs for case dog lifestyle factors were reported. RESULTS 54 dogs were classified as confirmed and 17 as probable cases. For 4 dogs of a household cluster (5 confirmed and 3 probable), the highest microscopic agglutination titer was for serovar Djasiman (Leptospira kirschneri detected by PCR assay), and for 13 dogs of a community outbreak (49 confirmed and 14 probable cases), the highest titer was for serovar Canicola (Leptospira interrogans detected by PCR assay). The 44 case dogs included in the case-control investigation were 7.7 (95% CI, 3.5 to 16.7) and 2.9 times (95% CI, 1.3 to 6.6) as likely as control dogs to have visited dog daycare or to have been kenneled overnight at a boarding facility, respectively, 30 days prior to the onset of clinical signs or diagnosis. CONCLUSIONS AND CLINICAL RELEVANCE Diagnostic and epidemiological findings indicated 2 outbreaks. Transmission where dogs congregated likely propagated the community outbreak. Outbreaks of leptospiral infections can occur in regions of low prevalence, and a dog's exposure to areas where dogs congregate should be considered when making Leptospira vaccination recommendations.
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Human, animal, water source interactions and leptospirosis in Thailand. Sci Rep 2021; 11:3215. [PMID: 33547388 PMCID: PMC7864926 DOI: 10.1038/s41598-021-82290-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Accepted: 01/18/2021] [Indexed: 12/03/2022] Open
Abstract
In Thailand, leptospirosis is primarily associated with those who work in agricultural occupations. Leptospirosis control is hampered by a poor understanding of the complex interactions between humans, animal reservoirs, Leptospira, and the variable spatial environment in which these factors coexist. We aimed to address key knowledge gaps concerning leptospirosis disease dynamics and the human–animal–water-source interface in two high-risk areas in Thailand. We conducted a cross-sectional survey among 746 study participants in two high-risk areas for leptospirosis in Thailand: Sisaket (SSK) and Nakhon Si Thammarat (NST). Interactions among humans, animals and water sources were quantified and analyzed. The presence of different animal species and thus contact patterns were different in NST and SSK. The consumption of water from the shared sources between the two areas was different. Those whose occupations were related to animals or environmental water and those who consumed water from more than two sources were more likely to have been infected with leptospirosis, with adjusted odds ratios 4.31 (95% CI 1.17–15.83) and 10.74 (95% CI 2.28–50.53), respectively. Understanding specific water-source sharing networks and human–animal contact patterns is useful when designing national and area-specific control programmes to prevent and control leptospirosis outbreaks.
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Ehelepola NDB, Ariyaratne K, Dissanayake DS. The interrelationship between meteorological parameters and leptospirosis incidence in Hambantota district, Sri Lanka 2008-2017 and practical implications. PLoS One 2021; 16:e0245366. [PMID: 33481868 PMCID: PMC7822256 DOI: 10.1371/journal.pone.0245366] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Accepted: 12/28/2020] [Indexed: 12/27/2022] Open
Abstract
Background Leptospirosis is a bacterial zoonosis. Leptospirosis incidence (LI) in Sri Lanka is high. Infected animals pass leptospires to the environment with their urine. Leprospires' survival in the environment to infect a new host depends on meteorological factors. El Nino Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) modulate the weather in Sri Lanka. Objectives The determination of interrelationship between the LI in the Hambantota District, and local meteorological parameters, ENSO and IOD. Methods We acquired notified leptospirosis cases in the Hambantota District and population data. We calculated weekly leptospirosis incidences for 2008 to 2017.Weather data from two weather stations was obtained, averaged and converted into weekly data. We plotted time series graphs and observed the correlation between seven aggregated weather parameters and LI. We estimated cross-correlations between those weather parameters and LI. As our principal analysis we determined correlation between LI and seven local weather parameters, Nino 3.4, Nino4 and Dipole Mode Index (DMI) indices using wavelet analysis. Results Our wavelet analysis results showed troughs of minimum, maximum, mean temperatures, soil temperature, the evaporation rate, the duration of sunshine were followed by peaks in LI and peaks of rainfall followed by peaks of LI, all after lag periods. Our time series graphs and cross-correlation determination results are generally in agreement with these results. However there was no significant correlation between rainfall and LI in the cross-correlation analysis. There were peaks of LI following both peaks and troughs of DMI. There was no clear correlation between both Nino indices and LI. Discussion This may be the first long-term study demonstrating soil temperature, evaporation rate and IOD are correlating with LI. The correlation pattern of LI with temperature parameters differs from similar past studies and we explain the reasons. We propose ways to control high LI we observed after periods of weather favorable for transmission of leptospirosis.
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Affiliation(s)
- N. D. B. Ehelepola
- The Teaching (General) Hospital–Peradeniya, Peradeniya, Sri Lanka
- * E-mail:
| | | | - D. S. Dissanayake
- Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
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Miller E, Barragan V, Chiriboga J, Weddell C, Luna L, Jiménez DJ, Aleman J, Mihaljevic JR, Olivas S, Marks J, Izurieta R, Nieto N, Keim P, Trueba G, Caporaso JG, Pearson T. Leptospira in river and soil in a highly endemic area of Ecuador. BMC Microbiol 2021; 21:17. [PMID: 33413126 PMCID: PMC7792295 DOI: 10.1186/s12866-020-02069-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 12/10/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Leptospira are shed into the environment via urine of infected animals. Rivers are thought to be an important risk factor for transmission to humans, though much is unknown about the types of environment or characteristics that favor survival. To address this, we screened for Leptospira DNA in two rivers in rural Ecuador where Leptospirosis is endemic. RESULTS We collected 112 longitudinal samples and recorded pH, temperature, river depth, precipitation, and dissolved oxygen. We also performed a series of three experiments designed to provide insight into Leptospira presence in the soil. In the first soil experiment, we characterized prevalence and co-occurrence of Leptospira with other bacterial taxa in the soil at dispersed sites along the rivers (n = 64). In the second soil experiment, we collected 24 river samples and 48 soil samples at three points along eight transects to compare the likelihood of finding Leptospira in the river and on the shore at different distances from the river. In a third experiment, we tested whether Leptospira presence is associated with soil moisture by collecting 25 soil samples from two different sites. In our river experiment, we found pathogenic Leptospira in only 4 (3.7%) of samples. In contrast, pathogenic Leptospira species were found in 22% of shore soil at dispersed sites, 16.7% of soil samples (compared to 4.2% of river samples) in the transects, and 40% of soil samples to test for associations with soil moisture. CONCLUSIONS Our data are limited to two sites in a highly endemic area, but the scarcity of Leptospira DNA in the river is not consistent with the widespread contention of the importance of river water for leptospirosis transmission. While Leptospira may be shed directly into the river, onto the shores, or washed into the river from more remote sites, massive dilution and limited persistence in rivers may reduce the environmental load and therefore, the epidemiological significance of such sources. It is also possible that transmission may occur more frequently on shores where people are liable to be barefoot. Molecular studies that further explore the role of rivers and water bodies in the epidemiology of leptospirosis are needed.
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Affiliation(s)
- Erin Miller
- The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA.,Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Veronica Barragan
- The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA. .,Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA. .,Universidad San Francisco de Quito, Colegio de Ciencias Biologicas y Ambientales, Instituto de Microbiologia, Quito, Ecuador.
| | - Jorge Chiriboga
- Universidad San Francisco de Quito, Colegio de Ciencias Biologicas y Ambientales, Instituto de Microbiologia, Quito, Ecuador
| | - Chad Weddell
- College of Public Health, University of South Florida, Tampa, FL, USA
| | - Ligia Luna
- Universidad San Francisco de Quito, Colegio de Ciencias Biologicas y Ambientales, Instituto de Microbiologia, Quito, Ecuador
| | - Dulce J Jiménez
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - John Aleman
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Joseph R Mihaljevic
- School of Informatics, Computing and Cyber Systems, Northern Arizona University, Flagstaff, AZ, USA
| | - Sonora Olivas
- The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
| | - Jane Marks
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA.,The Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA
| | - Ricardo Izurieta
- College of Public Health, University of South Florida, Tampa, FL, USA
| | - Nathan Nieto
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Paul Keim
- The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA.,Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Gabriel Trueba
- Universidad San Francisco de Quito, Colegio de Ciencias Biologicas y Ambientales, Instituto de Microbiologia, Quito, Ecuador
| | - J Gregory Caporaso
- The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA.,Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Talima Pearson
- The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA. .,Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA.
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Woolf D, Sanchez C, Gonzalez-Astudillo V, Navarro M, Tapia CC, Franco M, Bustamante JA, Astudillo M, Mukherjee J. LEPTOSPIRA SPECIES STATUS OF CAPTIVE NONHUMAN PRIMATES AND FREE-RANGING RODENTS AT THE BARRANQUILLA ZOO, COLOMBIA, 2013. J Zoo Wildl Med 2021; 51:780-788. [PMID: 33480558 DOI: 10.1638/2019-0192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/09/2020] [Indexed: 11/21/2022] Open
Abstract
Leptospirosis is a zoonotic disease with worldwide distribution caused by pathogenic Leptospira spp. Pathogenic Leptospira spp. are shed in urine of infected hosts and transmitted via ingestion of contaminated food or water, inoculation, inhalation of aerosolized urine, and absorption through mucous membranes. Leptospirosis is of particular concern in tropical and subtropical regions such as Barranquilla, Colombia. Recent reports indicate that in Barranquilla, rodents, dogs, and humans have a high leptospiral seroprevalence; and amongst zoo mammals, nonhuman primates have a high prevalence of Leptospira spp. infection. We therefore sought to determine whether primates in captivity at the Barranquilla Zoo were exposed to Leptospira spp. and whether there was a probable causal transmission link between the primates and peridomestic rodents. Samples were collected from 29 captive nonhuman primates, 15 free-ranging rats (Rattus rattus), and 10 free-ranging squirrels (Sciurus granatensis). Serum samples from primates, rats, and squirrels were evaluated via microagglutination test (MAT) vs 24 reference Leptospira serovars. Blood and urine from the primates and kidney tissue from the rats and squirrels were cultured in Ellinghausen-McCullough-Johnson-Harris (EMJH) medium and polymerase chain reaction (PCR) of lipL32 was performed to determine whether active infection was present. Leptospiral seroprevalence was found to be 66.7% (10/15) in rats, 60% (6/10) in squirrels, and 6.9% (2/29) in neotropical primates. Ateles hybridus and Ateles fusciceps had positive titers to serogroups Cynopteri and Ictohaemorrhagiae, respectively. Of the rodents that had antibodies against Leptospira spp., 90% of the rats and 66.7% of the squirrels corresponded to the serovar australis. Interestingly, all animals were culture and PCR negative, indicating Leptospira spp. exposure in the absence of current infection. While their status as maintenance hosts needs to be investigated further, this is the first study to show leptospiral seropositivity in red-tailed squirrels (S. granatensis).
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Affiliation(s)
- Danielle Woolf
- Tufts University Cummings School of Veterinary Medicine, North Grafton, MA 01536, USA
| | | | - Viviana Gonzalez-Astudillo
- California Animal Health and Food Safety Laboratory, University of California-Davis, San Bernardino, CA 92408, USA
| | - Mauricio Navarro
- California Animal Health and Food Safety Laboratory, University of California-Davis, San Bernardino, CA 92408, USA
| | | | - Mónica Franco
- Botanical and Zoological Foundation of Barranquilla, Barranquilla, Atlántico, Colombia
| | | | - Miryam Astudillo
- Universidad del Valle, Department of Microbiology, Cali, Valle del Cauca, Colombia
| | - Jean Mukherjee
- Tufts University Cummings School of Veterinary Medicine, North Grafton, MA 01536, USA,
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Chery G, Francis L, Hunte SA, Leon P. Epidemiology of human leptospirosis in Saint Lucia, 2010–2017. Rev Panam Salud Publica 2020. [PMCID: PMC7734240 DOI: 10.26633/rpsp.2020.160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Objective. To describe the epidemiology of human leptospirosis cases in Saint Lucia from 2010 to 2017 and determine whether there was a relationship between cases and rainfall and temperature.
Methods. A retrospective analytical study was undertaken to describe the seasonal patterns of human leptospirosis cases reported to the Ministry of Health of Saint Lucia between 2010 and 2017. Confirmed cases of leptospirosis were analyzed according to age, sex, seasonality, and geographical distribution. Disease incidence was calculated and the association of cases with geographical distribution, rainfall, and temperature was investigated.
Results. A total of 353 leptospirosis cases were reported between 2010 and 2017 and of these, 145 (40.6%) were laboratory confirmed. Cases were aged 7 to 73 years (mean 34 years; median 30 years) with a male to female ratio of 4.2:1. Six deaths were reported during the period, with an overall case fatality rate of 4.1%. There was no relationship between location (district) and incidence of leptospirosis in Saint Lucia. There was a weak correlation between rainfall and leptospirosis cases during the 8-year period (rs = 0.25, p = 0.015) but the correlation between cases and seasons was not statistically significant (dry season rs = 0.13, p = 0.42; wet season rs = 0.23, p = 0.08). There was no correlation between leptospirosis cases and temperature (rs = 0.07, p = 0.49).
Conclusions. Leptospirosis has a seasonal distribution in Saint Lucia, with outbreaks during periods following increased rainfall and flooding, such as in the aftermath of tropical storms and hurricanes. Saint Lucia and other Caribbean countries should enhance surveillance for leptospirosis given the likelihood of increased flooding following frequent and intense rainfall due to climate change.
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Affiliation(s)
- Gemma Chery
- Ministry of Health and Wellness, Castries, Saint Lucia
| | | | - Shelly-Ann Hunte
- University of the West Indies, Saint Augustine, Trinidad and Tobago
| | - Phil Leon
- Ministry of Health and Wellness, Castries, Saint Lucia
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Chaiwattanarungruengpaisan S, Thepapichaikul W, Paungpin W, Ketchim K, Suwanpakdee S, Thongdee M. Potentially Pathogenic Leptospira in the Environment of an Elephant Camp in Thailand. Trop Med Infect Dis 2020; 5:tropicalmed5040183. [PMID: 33291225 PMCID: PMC7768412 DOI: 10.3390/tropicalmed5040183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 12/01/2020] [Accepted: 12/02/2020] [Indexed: 11/16/2022] Open
Abstract
Leptospira is the causative agent of leptospirosis, a globally emerging zoonotic disease. The infection is commonly acquired through contact with the contaminated environment. To extend the knowledge on environmental source of leptospirosis, we investigated the presence of Leptospira in an elephant camp setting where the interaction between humans, animals, and the shared environment occur particularly when engaging in recreational activities. In this study, a total of 24 environmental samples were collected from an elephant camp area in western Thailand. All samples were processed for Leptospira isolation using the EMJH medium. The identification of Leptospira species was carried out by partial 16S rRNA and secY gene sequencing. Of those 24 samples, 18 samples (75%) were culture-positive for Leptospira. The recovered leptospires were mostly derived from water and soil sampled from a river and a mud pond, the main areas for recreational activities. The majority of the isolates were classified into “Pathogens” clade (89%, 16/18) and more than half of the isolates (61%, 11/18) contained species of the “Saprophytes” clade. Notably, two soil isolates from the river beach sampling area were found to contain leptospiral DNA with high similarity to the pathogenic L. interrogans and L. santarosai. The evidence of diverse Leptospira species, particularly those belonging to the “Pathogens” clade, suggest that the shared environments of an elephant camp can serve as potential infection source and may pose a risk to the elephant camp tourists and workers.
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Affiliation(s)
- Somjit Chaiwattanarungruengpaisan
- The Monitoring and Surveillance Center for Zoonotic Diseases in Wildlife and Exotic Animals, Faculty of Veterinary Science, Mahidol University, Salaya, Nakhon Pathom 73170, Thailand; (S.C.); (W.P.); (K.K.); (S.S.)
| | - Wasinee Thepapichaikul
- Livestock and Wildlife Hospital, Faculty of Veterinary Science, Mahidol University, Sai Yok, Kanchanaburi 71150, Thailand;
| | - Weena Paungpin
- The Monitoring and Surveillance Center for Zoonotic Diseases in Wildlife and Exotic Animals, Faculty of Veterinary Science, Mahidol University, Salaya, Nakhon Pathom 73170, Thailand; (S.C.); (W.P.); (K.K.); (S.S.)
| | - Kanokwan Ketchim
- The Monitoring and Surveillance Center for Zoonotic Diseases in Wildlife and Exotic Animals, Faculty of Veterinary Science, Mahidol University, Salaya, Nakhon Pathom 73170, Thailand; (S.C.); (W.P.); (K.K.); (S.S.)
| | - Sarin Suwanpakdee
- The Monitoring and Surveillance Center for Zoonotic Diseases in Wildlife and Exotic Animals, Faculty of Veterinary Science, Mahidol University, Salaya, Nakhon Pathom 73170, Thailand; (S.C.); (W.P.); (K.K.); (S.S.)
- Department of Clinical Sciences and Public Health, Faculty of Veterinary Science, Mahidol University, Salaya, Nakhon Pathom 73170, Thailand
| | - Metawee Thongdee
- The Monitoring and Surveillance Center for Zoonotic Diseases in Wildlife and Exotic Animals, Faculty of Veterinary Science, Mahidol University, Salaya, Nakhon Pathom 73170, Thailand; (S.C.); (W.P.); (K.K.); (S.S.)
- Correspondence: ; Tel.: +66-2441-5236
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Petri FAM, Sonalio K, de Souza Almeida HM, Mechler-Dreibi ML, Galdeano JVB, Mathias LA, de Oliveira LG. Cross-sectional study of Leptospira spp. in commercial pig farms in the state of Goiás, Brazil. Trop Anim Health Prod 2020; 53:13. [PMID: 33211190 DOI: 10.1007/s11250-020-02457-6] [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: 03/16/2020] [Accepted: 10/25/2020] [Indexed: 10/22/2022]
Abstract
Leptospirosis is an infectious, contagious disease highly important to the world pig industry, which causes reproductive loss in breeding herds. Endemic infections in a herd may produce little evidence of clinical disease despite resulting in economic losses. However, some epidemiological features of leptospirosis in midwestern Brazil, such as risk factors and prevalence of the disease, remain unclear. Therefore, this study focused on assessing the prevalence of the Leptospira spp. in intensive pig herds and associating its risk factors. A set of 900 blood samples, equally distributed between nursery, growing, and finishing pigs of 30 intensive farrow-to-finish farms, were analyzed using the microagglutination test (MAT), in order to detect anti-Leptospira spp. antibodies for 24 different Leptospira spp. serovars. An occurrence of 4.67% (55/342) seropositive samples were detected in fattening pigs. The variables associated with the disease occurrence were animals per square meter at fattening (OR 0.006, CI 95% 0.004-0.42, p = 0.0105) and pen division between growing and fattening pigs (OR 3.56, CI 95% 0.563-22.541, p = 0.185). Thus, the variables semi-hollow floor in the maternity (OR 16.66; CI 95%: 2.17-128.2 and p = 0.006) and animals per trough at fattening (OR: 0.08, CI 95% 0.009-0.87 and p = 0.025), observed in this study, highlight the importance of the fattening phase in the epidemiology of the disease, bringing information on risk factors involved in the occurrence and dissemination of leptospirosis in intensive pig herds.
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Affiliation(s)
- Fernando Antônio Moreira Petri
- Department of Veterinary Clinic and Surgery, School of Agricultural and Veterinarian Sciences, São Paulo State University (UNESP), Jaboticabal, São Paulo, Brazil
| | - Karina Sonalio
- Department of Veterinary Clinic and Surgery, School of Agricultural and Veterinarian Sciences, São Paulo State University (UNESP), Jaboticabal, São Paulo, Brazil
| | - Henrique Meiroz de Souza Almeida
- Department of Veterinary Clinic and Surgery, School of Agricultural and Veterinarian Sciences, São Paulo State University (UNESP), Jaboticabal, São Paulo, Brazil
| | - Marina Lopes Mechler-Dreibi
- Department of Veterinary Clinic and Surgery, School of Agricultural and Veterinarian Sciences, São Paulo State University (UNESP), Jaboticabal, São Paulo, Brazil
| | | | - Luís Antônio Mathias
- Department of Veterinary Clinic and Surgery, School of Agricultural and Veterinarian Sciences, São Paulo State University (UNESP), Jaboticabal, São Paulo, Brazil
| | - Luís Guilherme de Oliveira
- Department of Veterinary Clinic and Surgery, School of Agricultural and Veterinarian Sciences, São Paulo State University (UNESP), Jaboticabal, São Paulo, Brazil.
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High incidence of asymptomatic leptospirosis among urban sanitation workers from Kota Kinabalu, Sabah, Malaysian Borneo. Sci Rep 2020; 10:19442. [PMID: 33173153 PMCID: PMC7655852 DOI: 10.1038/s41598-020-76595-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 10/27/2020] [Indexed: 11/08/2022] Open
Abstract
Leptospirosis is a public health challenge in Sabah State of Malaysian Borneo. Rapid urbanization, rural-to-urban migration, and undocumented immigration in Sabah have increased the pressure on the urban garbage disposal system. Rodents and other small animals thrive under these conditions. We hypothesized that urban sanitation workers would be at risk of developing leptospirosis. In total, 303 urban sanitation workers with a mean age of 42.6 years were enrolled in this study. The serum samples collected from these workers were subjected to the microscopic agglutination test (MAT), PCR and nucleotide sequencing of the amplicons to confirm the presence of Leptospira. The phylogenetic analysis using the neighbor joining method was performed to assess whether they were pathogenic. In this study 43.8% (133/303) of the samples were MAT-seropositive and among them, 29 (21.8%) were positive by PCR. Nucleotide sequencing of the amplicons confirmed the presence of Leptospira. Phylogenetic analysis showed that our strains belonged to the pathogenic group of Leptospira. A high proportion of urban sanitation workers were seropositive for leptospirosis, and a considerable number were PCR positive for Leptospira, thereby indicating asymptomatic infections. Further research is needed to confirm whether this is a transient phenomenon or antibiotic therapy is required.
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Poudel A, Hoque MM, Madere S, Bolds S, Price S, Barua S, Adekanmbi F, Kalalah A, Kitchens S, Brown V, Wang C, Lockaby BG. Molecular and Serological Prevalence of Leptospira spp. in Feral Pigs ( Sus scrofa) and their Habitats in Alabama, USA. Pathogens 2020; 9:pathogens9100857. [PMID: 33092307 PMCID: PMC7589127 DOI: 10.3390/pathogens9100857] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/11/2020] [Accepted: 10/19/2020] [Indexed: 12/23/2022] Open
Abstract
Leptospirosis is a widespread zoonosis and has been recognized as a re-emerging infectious disease in humans and a variety of wild and domestic animal species. In order to understand the prevalence and diversity of Leptospira spp. in feral pig populations of Alabama, we trapped 315 feral pigs in Bullock County east-central Alabama, and collected 97 environmental samples from riparian areas in Bullock County and Macon County east-central Alabama. Two previously published PCRs followed by DNA sequencing and BLASTn were performed to identify pathogenic Leptospira species in the kidney of feral pigs (3.2%, 10/315) as well as environmental samples collected from the habitats of feral pigs (2.1%, 2/97), but not in the whole blood samples (n = 276) or spleen (n = 51). An ELISA determined that 44.2% of serum samples (122/276) were antibody-positive for Leptospira. The identification of two pathogenic Leptospira species from environmental samples and the high sero-positivity in feral pigs suggests potential pathogen shedding from feral pigs to environments, and to humans and domestic animals. In order to better understand the risk to human health associated with feral swine presence, further studies are warranted to explore the interrelationship between Leptospira spp. shedding in the urine of feral pigs and bacterial culture to explore pathogenicity. Multi-locus sequencing typing (MLST) and microscopic agglutination tests (MAT) should be performed in future studies to make a definite determination of pathogenic Leptospira in feral pigs in Alabama.
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Affiliation(s)
- Anil Poudel
- College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA; (A.P.); (M.M.H.); (S.P.); (S.B.); (F.A.); (A.K.); (S.K.)
| | - Md Monirul Hoque
- College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA; (A.P.); (M.M.H.); (S.P.); (S.B.); (F.A.); (A.K.); (S.K.)
| | - Steven Madere
- School of Forestry and Wildlife Sciences, Auburn University, Auburn, AL 36830, USA; (S.M.); (S.B.)
| | - Sara Bolds
- School of Forestry and Wildlife Sciences, Auburn University, Auburn, AL 36830, USA; (S.M.); (S.B.)
| | - Stuart Price
- College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA; (A.P.); (M.M.H.); (S.P.); (S.B.); (F.A.); (A.K.); (S.K.)
| | - Subarna Barua
- College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA; (A.P.); (M.M.H.); (S.P.); (S.B.); (F.A.); (A.K.); (S.K.)
| | - Folasade Adekanmbi
- College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA; (A.P.); (M.M.H.); (S.P.); (S.B.); (F.A.); (A.K.); (S.K.)
| | - Anwar Kalalah
- College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA; (A.P.); (M.M.H.); (S.P.); (S.B.); (F.A.); (A.K.); (S.K.)
| | - Steven Kitchens
- College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA; (A.P.); (M.M.H.); (S.P.); (S.B.); (F.A.); (A.K.); (S.K.)
| | - Vienna Brown
- USDA/APHIS/Wildlife Services, National Feral Swine Damage Management Program, Fort Collins, CO 80521, USA;
| | - Chengming Wang
- College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA; (A.P.); (M.M.H.); (S.P.); (S.B.); (F.A.); (A.K.); (S.K.)
- Correspondence: (C.W.); (B.G.L.)
| | - B. Graeme Lockaby
- School of Forestry and Wildlife Sciences, Auburn University, Auburn, AL 36830, USA; (S.M.); (S.B.)
- Correspondence: (C.W.); (B.G.L.)
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Truitt ZG, Poon-Kwong B, Bachoon DS, Otero E. Seasonal shifts in the presence of pathogenic leptospires, Escherichia coli, and physicochemical properties in coastal rivers and streams of Puerto Rico. JOURNAL OF ENVIRONMENTAL QUALITY 2020; 49:1264-1272. [PMID: 33016462 DOI: 10.1002/jeq2.20091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 04/14/2020] [Accepted: 05/05/2020] [Indexed: 05/21/2023]
Abstract
Leptospirosis is an emerging zoonotic disease in the Caribbean region and the island of Puerto Rico. Information on the presence of pathogenic Leptospira in rivers and streams of Puerto Rico is currently lacking. This study aimed to evaluate seasonal shifts in the presence of pathogenic leptospires and the level of Escherichia coli from 32 coastal locations in Puerto Rico's dry and wet seasons. Physicochemical parameters (temperature, salinity, pH, and dissolved oxygen) were determined at each site. The temperature (25.8 °C) and pH (average 7.6) values were all within acceptable USEPA regulatory standards. Thirty-eight percent of the sites of the dry season and 28% of the wet season sites contained dissolved oxygen levels ≤4 mg L-1 , which is relatively low. In the dry season, 19 sites (59%) and 18 (56%) of the wet season sites had E. coli counts >410 most probable number (MPN) 100 ml-1 and would be considered unsafe for recreational use. The lipl32 gene quantitative polymerase chain reaction assay was used for the detection of pathogenic leptospires in the samples. Low concentrations of pathogenic leptospires (<60 genome copies 100 ml-1 ) at Camuy, Espíritu Santo, Río Guayanilla, Quebrada Majagual, and Río Fajardo were detected during the wet season. Pathogenic leptospires were detected (∼40 genome copies 100 ml-1 ) at only one site, Loíza, during the dry season. There was no predictable relationship between the physicochemical parameters, concentrations of E. coli, and the presence of pathogenic leptospires in water samples.
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Affiliation(s)
- Zamara G Truitt
- Dep. of Biological and Environmental Sciences, Georgia College and State Univ., Milledgeville, GA, 31061, USA
| | - B Poon-Kwong
- Dep. of Biological and Environmental Sciences, Georgia College and State Univ., Milledgeville, GA, 31061, USA
| | - D S Bachoon
- Dep. of Biological and Environmental Sciences, Georgia College and State Univ., Milledgeville, GA, 31061, USA
| | - E Otero
- Dep. of Marine Sciences, Univ. of Puerto Rico, Mayaguez Campus, P.O. Box 9013, Mayaguez, PR, 00681, USA
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Tekemen D, Franz M, Bier NS, Richter M, Nöckler K, Luge E, Mayer-Scholl A. Survival time of Leptospira kirschneri on strawberries. PLoS One 2020; 15:e0237466. [PMID: 32790762 PMCID: PMC7425971 DOI: 10.1371/journal.pone.0237466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 07/27/2020] [Indexed: 11/19/2022] Open
Abstract
In the past decade, two leptospirosis outbreaks occurred among strawberry harvesters in Germany, with 13, and 45 reported cases respectively. In both outbreaks, common voles (Microtus arvalis) infected with Leptospira kischneri serovar Grippotyphosa were identified as the most likely outbreak source. In an univariate analysis, eating unwashed strawberries was identified as one of the risk factors associated with Leptospira infection. The aim of this study was to evaluate the survival time of L. kirschneri serovar Grippotyphosa on strawberries under varying conditions. Strawberries were spiked with 5x109 of both a laboratory reference strain (strain Moskva V) and an outbreak field strain (94-6/2007) of L. kirschneri serovar Grippotyphosa sequence type 110. Survival times were investigated in a fully crossed design with three incubation times (2h, 4h, 6h and 8h) and three temperatures (15°C, 21°C and 25°C) with three replicated for each condition. A wash protocol was developed and recovered Leptospira were determined by qPCR, dark field microscopy and culturing. Viable L. kirschneri of both the reference strain and the field strain were identified in all samples at 25°C and an incubation time of 2h, but only 1/9 (11%) and 4/9 (44%) of the samples incubated at 15°C were positive, respectively. Both reference and field strain were viable only in 2/9 (22%) at 25° after 6h. After an 8h incubation, viable Leptospira could not be identified on the surface of the strawberries or within the fruit for any of the tested conditions. Based on these results, the exposure risk of consumers to viable Leptospira spp. through the consumption of strawberries bought at the retail level is most likely very low. However, there is a potential risk of Leptospira infection by consumption of strawberries on pick-your-own farms.
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Affiliation(s)
- Duygu Tekemen
- Department of Biological Safety, German Federal Institute for Risk Assessment, Berlin, Germany
| | - Mathias Franz
- Department Exposure, German Federal Institute for Risk Assessment, Berlin, Germany
| | - Nadja S. Bier
- Department of Biological Safety, German Federal Institute for Risk Assessment, Berlin, Germany
| | - Martin Richter
- Department of Biological Safety, German Federal Institute for Risk Assessment, Berlin, Germany
| | - Karsten Nöckler
- Department of Biological Safety, German Federal Institute for Risk Assessment, Berlin, Germany
| | - Enno Luge
- Department of Biological Safety, German Federal Institute for Risk Assessment, Berlin, Germany
| | - Anne Mayer-Scholl
- Department of Biological Safety, German Federal Institute for Risk Assessment, Berlin, Germany
- * E-mail:
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Narkkul U, Thaipadungpanit J, Srilohasin P, Singkhaimuk P, Thongdee M, Chaiwattanarungruengpaisan S, Krairojananan P, Pan-ngum W. Optimization of Culture Protocols to Isolate Leptospira spp. from Environmental Water, Field Investigation, and Identification of Factors Associated with the Presence of Leptospira spp. in the Environment. Trop Med Infect Dis 2020; 5:tropicalmed5020094. [PMID: 32517121 PMCID: PMC7345561 DOI: 10.3390/tropicalmed5020094] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/27/2020] [Accepted: 05/28/2020] [Indexed: 01/22/2023] Open
Abstract
The successful culture of Leptospira spp. from the environment is challenging. Here, we optimized the isolation of Leptospira spp. from water samples spiked with different species and initial concentrations of this organism. The time periods between water sampling and the isolation process were varied (0, 2, and 4 weeks). Bacterial cultures were observed under a microscope, and cultures were graded for cell density, weekly, for 12 weeks. Most pathogenic Leptospira spp. were difficult to culture under all conditions. All conditions of water samples spiked with novel species of Leptospira subclade P1 were culture positive within 2 weeks. For Leptospira subclade P2, storing samples for 2 weeks prior to isolation resulted in more successful isolation compared with isolation after other storage conditions. For subclade S1, all samples with initial bacterial concentrations of more than 103 colonies/mL, under all storage conditions, were successfully cultured. These results suggest that storing contaminated water samples for 2 to 4 weeks in the dark at an ambient temperature prior to culturing can improve the isolation of Leptospira spp. from the samples. We implemented this protocol and collected water samples from natural sources accessed by both humans and animals. Leptospira spp. was identified in 32% (35/109) of water samples. The animal species using a water source influenced the likelihood of water samples being contaminated with Leptospira spp. Cultures of Leptospira spp. from environmental samples can provide useful information for understanding the complex interactions between humans, animals and the environment in the transmission of leptospirosis.
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Affiliation(s)
- Udomsak Narkkul
- Department of Tropical Hygiene, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand;
| | - Janjira Thaipadungpanit
- Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (J.T.); (P.S.); (P.S.)
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Prapaporn Srilohasin
- Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (J.T.); (P.S.); (P.S.)
- Office for Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Preeraya Singkhaimuk
- Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (J.T.); (P.S.); (P.S.)
| | - Metawee Thongdee
- The Monitoring and Surveillance Center for Zoonotic Diseases in Wildlife and Exotic Animals, Faculty of Veterinary Science, Mahidol University, Nakhon Pathom 73170, Thailand; (M.T.); (S.C.)
| | - Somjit Chaiwattanarungruengpaisan
- The Monitoring and Surveillance Center for Zoonotic Diseases in Wildlife and Exotic Animals, Faculty of Veterinary Science, Mahidol University, Nakhon Pathom 73170, Thailand; (M.T.); (S.C.)
| | - Panadda Krairojananan
- Department of Entomology, Armed Forces Research Institute of Medical Sciences, Rajvithi Road, Bangkok 10400, Thailand;
| | - Wirichada Pan-ngum
- Department of Tropical Hygiene, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand;
- Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (J.T.); (P.S.); (P.S.)
- Correspondence: ; Tel.: +66-2306-9188
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Wuthiekanun V, Amornchai P, Langla S, White NJ, Day NPJ, Limmathurotsakul D. Survival of Burkholderia pseudomallei and Pathogenic Leptospira in Cola, Beer, Energy Drinks, and Sports Drinks. Am J Trop Med Hyg 2020; 103:249-252. [PMID: 32274989 PMCID: PMC7356472 DOI: 10.4269/ajtmh.19-0948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Burkholderia pseudomallei and pathogenic Leptospira in contaminated drinking water can cause melioidosis and leptospirosis, respectively. Here, we evaluated their survival in beverages. We mixed six isolates (three isolates per organism) in four beverages (Coca-Cola®, Red Bull®, Singha® beer, and Gatorade®) and distilled water as the control at two final concentrations (1 × 107 colony-forming units [CFU]/mL and 1 × 103 CFU/mL). The solution was kept at two temperatures (37°C and 4°C). At 4°C and at the high concentration, pathogenic Leptospira survived in Coca-Cola® up to 3 minutes and in Singha, Red Bull®, and Gatorade up to 15 minutes, whereas B. pseudomallei survived in these beverages up to 8 hours, and 14, 14, and 28 days, respectively. The survival time of both organisms was shorter at 37°C (P = 0.01) and at the lower concentration (P = 0.001). In conclusion, Leptospira can survive in some beverages for up to 15 minutes, whereas B. pseudomallei can survive in some beverages for up to 4 weeks.
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Affiliation(s)
- Vanaporn Wuthiekanun
- Mahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Premjit Amornchai
- Mahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Sayan Langla
- Mahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Nicholas J White
- Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, United Kingdom.,Mahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Nicholas P J Day
- Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, United Kingdom.,Mahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Direk Limmathurotsakul
- Department of Tropical Hygiene, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.,Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, United Kingdom.,Mahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
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45
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Bini Viotti J, Chan JC, Rivera C, Tuda C. Sporadic leptospirosis case in Florida presenting as Weil`s disease. IDCases 2020; 19:e00686. [PMID: 32226765 PMCID: PMC7093744 DOI: 10.1016/j.idcr.2019.e00686] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 12/04/2019] [Accepted: 12/04/2019] [Indexed: 11/27/2022] Open
Abstract
Leptospirosis has been rarely reported in the United States and has been historically related to occupational exposure to infected animals, and contaminated environments. Over the past decade, there are indications that at-risk populations may be changing in the United States, to also include participants in freshwater sports and occasionally individuals living in economically disadvantaged urban inner- city environments. We present a case of Weil`s disease in a 39-year-old homeless man who had been released from prison two weeks prior and denied direct contact with infected animals or contaminated fresh water. Prison inmates and homeless patients are potentially at high risk of rat exposure and infection with Leptospira. A high index of suspicion is needed for diagnosis of leptospirosis in the absence of traditional risk factors. To our knowledge, this is the first case of leptospirosis associated with homelessness and incarceration in the United States. A literature review on leptospirosis cases in Florida over the past 60 years was performed.
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Affiliation(s)
- Julia Bini Viotti
- Department of Medicine, Mount Sinai Medical Center, Miami Beach, FL, USA
| | - Joseph C Chan
- Department of Infectious Diseases, Mount Sinai Medical Center, Miami Beach, FL, USA
| | - Cynthia Rivera
- Department of Infectious Diseases, Mount Sinai Medical Center, Miami Beach, FL, USA
| | - Claudio Tuda
- Department of Infectious Diseases, Mount Sinai Medical Center, Miami Beach, FL, USA
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Bierque E, Thibeaux R, Girault D, Soupé-Gilbert ME, Goarant C. A systematic review of Leptospira in water and soil environments. PLoS One 2020; 15:e0227055. [PMID: 31986154 PMCID: PMC6984726 DOI: 10.1371/journal.pone.0227055] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 12/10/2019] [Indexed: 01/02/2023] Open
Abstract
Background Leptospirosis, caused by pathogenic Leptospira, is a zoonosis of global distribution. This infectious disease is mainly transmitted by indirect exposure to urine of asymptomatic animals via the environment. As human cases generally occur after heavy rain, an emerging hypothesis suggests that rainfall re-suspend leptospires together with soil particles. Bacteria are then carried to surface water, where humans get exposed. It is currently assumed that pathogenic leptospires can survive in the environment but do not multiply. However, little is known on their capacity to survive in a soil and freshwater environment. Methods We conducted a systematic review on Leptospira and leptospirosis in the environment in order to collect current knowledge on the lifestyle of Leptospira in soil and water. In total, 86 scientific articles retrieved from online databases or institutional libraries were included in this study. Principals findings/significance This work identified evidence of survival of Leptospira in the environment but major gaps remain about the survival of virulent species associated with human and animal diseases. Studies providing quantitative data on Leptospira in soil and water are a very recent trend, but must be interpreted with caution because of the uncertainty in the species identification. Several studies mentioned the presence of Leptospira in soils more frequently than in waters, supporting the hypothesis of the soil habitat and dispersion of Leptospira with re-suspended soil particles during heavy rain. In a near future, the growing use of high throughput sequencing will offer new opportunities to improve our understanding of the habitat of Leptospira in the environment. This better insight into the risk of leptospirosis will allow implementing efficient control measures and prevention for the human and animal populations exposed.
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Affiliation(s)
- Emilie Bierque
- Leptospirosis Research and Expertise Unit, Institut Pasteur in New Caledonia, Institut Pasteur International Network, Noumea, New Caledonia
| | - Roman Thibeaux
- Leptospirosis Research and Expertise Unit, Institut Pasteur in New Caledonia, Institut Pasteur International Network, Noumea, New Caledonia
| | - Dominique Girault
- Leptospirosis Research and Expertise Unit, Institut Pasteur in New Caledonia, Institut Pasteur International Network, Noumea, New Caledonia
| | - Marie-Estelle Soupé-Gilbert
- Leptospirosis Research and Expertise Unit, Institut Pasteur in New Caledonia, Institut Pasteur International Network, Noumea, New Caledonia
| | - Cyrille Goarant
- Leptospirosis Research and Expertise Unit, Institut Pasteur in New Caledonia, Institut Pasteur International Network, Noumea, New Caledonia
- * E-mail:
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47
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Romero-Sandoval N, Cifuentes L, León G, Lecaro P, Ortiz-Rico C, Cooper P, Martín M. High Rates of Exposures to Waterborne Pathogens in Indigenous Communities in the Amazon Region of Ecuador. Am J Trop Med Hyg 2020; 101:45-50. [PMID: 31162016 DOI: 10.4269/ajtmh.18-0970] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Waterborne pathogens, associated with poverty and poor sanitary conditions, are a major cause of morbidity and mortality worldwide. There are limited data on the epidemiology of waterborne pathogens in indigenous populations living in the Amazon region. We did a cross-sectional survey in two indigenous Shuar communities in the Amazon region of Ecuador in which we documented the presence of pathogens representing different sources of environmental contamination of water. We detected protozoa and soil-transmitted helminths by microscopy of fecal samples and the presence of IgG antibodies to hepatitis A and Leptospira spp. in blood samples from individuals older than 2 years and collected data by questionnaire on sociodemographic factors and knowledge of infectious diseases. Seroprevalence for hepatitis A and Leptospira spp. were 98.1% (95% CI: 97.0-99.8) and 50.0% (95% CI: 43.3-56.6), respectively, whereas 62.6% (95% CI: 55.8-69.4) had enteric parasites in stool samples. In participants older than 6 years, eight of 10 had evidence of infection with or exposure to at least one of the pathogens studied. Although prevalence of pathogens varied by age, it did not vary significantly by gender, temporal migration, illiteracy, perceived morbidity, receipt of conditional cash transfers, water boiling practices, poor housing conditions, and anthropometric status. These findings indicate a high level of contamination of drinking water by human pathogens in these indigenous communities and the need for interventions to improve access to and use of clean drinking water in these marginalized communities.
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Affiliation(s)
- Natalia Romero-Sandoval
- Grups de Recerca d'Amèrica i Àfrica Llatines - GRAAL, Barcelona, Spain.,School of Medicine, Universidad Internacional del Ecuador, Quito, Ecuador
| | - Lizeth Cifuentes
- School of Medicine, Universidad Internacional del Ecuador, Quito, Ecuador
| | - Gabriela León
- School of Medicine, Universidad Internacional del Ecuador, Quito, Ecuador
| | - Paola Lecaro
- School of Medicine, Universidad Internacional del Ecuador, Quito, Ecuador
| | - Claudia Ortiz-Rico
- Grupo Salud-Comunid-Universidad de Santander, Facultad de Ciencias de la Salud, Universidad de Santander, Bucaramanga, Colombia.,Unidad de Bioestadística, Facultad de Medicina, Universidad Autónoma de Barcelona, Barcelona, Spain
| | - Philip Cooper
- Fundación Ecuatoriana para la Investigación en Salud, FEPIS, Quinindé, Ecuador.,St. George's University, London, United Kingdom.,School of Medicine, Universidad Internacional del Ecuador, Quito, Ecuador
| | - Miguel Martín
- Unidad de Bioestadística, Facultad de Medicina, Universidad Autónoma de Barcelona, Barcelona, Spain.,Grups de Recerca d'Amèrica i Àfrica Llatines - GRAAL, Barcelona, Spain.,School of Medicine, Universidad Internacional del Ecuador, Quito, Ecuador
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EVIDENCE OF LEPTOSPIRA SEROVARS IN WILDLIFE AND LEPTOSPIRAL DNA IN WATER SOURCES IN A NATURAL AREA IN EAST-CENTRAL ILLINOIS, USA. J Wildl Dis 2019. [PMID: 31622185 DOI: 10.7589/2019-03-069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We identified seven Leptospira serovars in wildlife and the presence of leptospiral DNA in water sources at a natural area within a fragmented habitat in Illinois, US. These serovars have been implicated in domestic animal and human leptospirosis, a reemerging zoonotic disease, whose reservoirs include wildlife and domestic animals. We live trapped medium-sized mammals (n=351) near building (H-sites) or forest sites (F-sites). Using serology, we evaluated exposure to Leptospira (L. interrogans serovars Autumnalis, Bratislava, Canicola, Icterohaemorrhagiae, Pomona; L. kirschneri serovar Grippotyphosa; L. borgpetersenii serovar Hardjo). Using PCR, we tested for the presence of leptospires in eight water samples (ponds, creeks, and rainwater runoff) collected near trapping sites. We identified antibody titers in raccoons (Procyon lotor; 121/221) and Virginia opossums (Didelphis virginiana; 60/112), but not in feral cats (Felis catus; 0/18). We found significant differences in overall Leptospira seroprevalence between years (P=0.043) and animal's age in 2008 (P=0.005) and 2009 (P=0.003). Serovars Autumnalis, Bratislava, and Grippotyphosa showed significant differences among age groups with the highest seroprevalence in adults. Females had a higher seroprevalence for Icterohaemorragiae in 2008 (P=0.003) and Hardjo in 2009 (P=0.041). Risk of exposure to Leptospira was higher at F-sites compared to H-sites (odds ratio 2.3, 95% confidence interval 1.3-3.9, P=0.002). We captured more animals with titers >1:800 at H-sites, but there was no association between titer levels and capture site. Six of eight water sources were Leptospira-positive; however, there was no correlation between trapping locations of seropositive animals and positive water sources. Natural areas create opportunities for interspecies interactions, favoring leptospires transmission across species. Understanding that Leptospira serovars are present in natural areas is an integral part of the safe human and pet recreational use of these areas. Our study should raise awareness and build on public education designed to prevent disease transmission between species.
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Abreu JAPD, Krawczak FDS, Guedes IB, Souza-Filho AFD, Souza GOD, Binder LDC, de Oliveira CS, Sponchiado J, Melo GL, Labruna MB, Heinemann MB. Frequency of anti- Leptospira spp. antibodies in dogs and wild small mammals from rural properties and conservation units in southern Brazil. One Health 2019; 8:100104. [PMID: 31649994 PMCID: PMC6804587 DOI: 10.1016/j.onehlt.2019.100104] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 09/06/2019] [Accepted: 09/07/2019] [Indexed: 01/17/2023] Open
Abstract
Leptospirosis is a disease of worldwide distribution that affects man and several animal species. Domestic and wild animals can behave as reservoirs of the agent. The aim of this study was to evaluate the frequency of anti-Leptospira spp. antibodies in dogs and wild small mammals from rural properties and conservation units of three municipalities of Rio Grande do Sul State, Brazil. Sera were collected from 192 domestic dogs and 132 small mammals, namely rodents of the Cricetidae and Caviidae families and marsupials of the Didelphidae family. The study used Microscopic Agglutination Test (MAT) against 23 serovars of Leptospira spp. Overall, 9.90% (19/192) dogs, and 1.51% (2/132) small mammals were seropositive. Leptospira interrogans serovar Australis was the most frequent serovar in dogs and antibodies against L. interrogans serovar Pomona were detected in a dog and a small mammal belonging to the same municipality. We conclude that in the regions studied the frequency of seropositivity in dogs is low, and leptospires do not seem to be circulating in small mammals, yet, further research is necessary to assess the real role that these animals may have for leptospirosis in the studied areas. This is the first serological survey in small mammals, including wild rodents, in the area that encompasses conservation units of great importance to Rio Grande do Sul state.
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Affiliation(s)
- Juliana Aizawa Porto de Abreu
- Laboratório de Zoonoses Bacterianas, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, Brazil
| | - Felipe da Silva Krawczak
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, Brazil.,Setor de Medicina Veterinária Preventiva, Departamento de Medicina Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Brazil
| | - Israel Barbosa Guedes
- Laboratório de Zoonoses Bacterianas, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, Brazil
| | - Antonio Francisco de Souza-Filho
- Laboratório de Zoonoses Bacterianas, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, Brazil
| | - Gisele Oliveira de Souza
- Laboratório de Zoonoses Bacterianas, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, Brazil
| | - Lina de Campos Binder
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, Brazil
| | - Caroline Sobotyk de Oliveira
- Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Brazil
| | - Jonas Sponchiado
- Instituto Federal de Educação, Ciência e Tecnologia Farroupilha, Campus Alegrete, Brazil
| | - Geruza Leal Melo
- Programa de Pós-Graduação em Biodiversidade Animal, Departamento de Ecologia e Evolução, Universidade Federal de Santa Maria, Brazil
| | - Marcelo Bahia Labruna
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, Brazil
| | - Marcos Bryan Heinemann
- Laboratório de Zoonoses Bacterianas, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, Brazil
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50
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Thongdee M, Chaiwattanarungruengpaisan S, Lekcharoen P, Yimchoho N, Buathong R, Wiriyarat W. A Novel Genotype of Leptospira interrogans Recovered from Leptospirosis Outbreak Samples from Southern Thailand. Jpn J Infect Dis 2019; 72:343-346. [PMID: 31155602 DOI: 10.7883/yoken.jjid.2019.061] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We performed Leptospira culture analysis of 76 clinical samples collected from animals and of six soil samples for the investigation of a leptospirosis outbreak in southern Thailand in 2017. Leptospires were recovered from a kidney sample (a fatal canine leptospirosis case) and from all the soil samples. Next, 16S rRNA sequence analysis demonstrated that the clinical isolate was closely related to the pathogenic L. interrogans, whereas the soil isolates represented different species, including pathogenic L. ellisii, intermediate L. wolffii, and nonpathogenic L. yanagawae. Multilocus sequence typing identified an isolate of L. interrogans as a novel sequence type (ST263), suggesting that the causative agent of the canine leptospirosis in the southern Thailand outbreak has a unique genetic profile.
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Affiliation(s)
- Metawee Thongdee
- The Monitoring and Surveillance Center for Zoonotic Diseases in Wildlife and Exotic Animals, Mahidol University
| | | | - Paisin Lekcharoen
- The Monitoring and Surveillance Center for Zoonotic Diseases in Wildlife and Exotic Animals, Mahidol University
| | - Nirandorn Yimchoho
- Bureau of Epidemiology, Department of Disease Control, Ministry of Public Health
| | - Rome Buathong
- Bureau of Epidemiology, Department of Disease Control, Ministry of Public Health
| | - Witthawat Wiriyarat
- The Monitoring and Surveillance Center for Zoonotic Diseases in Wildlife and Exotic Animals, Mahidol University.,Department of Preclinic and Applied Animal Science, Faculty of Veterinary Science, Mahidol University
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