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Perera M, Hemachandra I, Howard-Jones AR, Fong W, Sintchenko V, Varadhan H, Naqvi S. Leptospirosis ventriculoperitoneal shunt infection. Pathology 2024:S0031-3025(24)00180-6. [PMID: 39142999 DOI: 10.1016/j.pathol.2024.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 04/25/2024] [Accepted: 05/13/2024] [Indexed: 08/16/2024]
Affiliation(s)
- Manoshi Perera
- Department of Microbiology, NSW Health Pathology, John Hunter Hospital, Newcastle, NSW, Australia.
| | - Imal Hemachandra
- Department of Infectious Diseases, John Hunter Hospital, Newcastle, NSW, Australia
| | - Annaleise R Howard-Jones
- Centre for Infectious Diseases and Microbiology Laboratory Services, Westmead Hospital, Westmead, NSW, Australia
| | - Winkie Fong
- Sydney Institute for Infectious Diseases, University of Sydney, NSW, Sydney, Australia; Centre for Infectious Diseases and Microbiology-Public Health, Westmead Hospital, Westmead, NSW, Australia
| | - Vitali Sintchenko
- Centre for Infectious Diseases and Microbiology Laboratory Services, Westmead Hospital, Westmead, NSW, Australia; Sydney Institute for Infectious Diseases, University of Sydney, NSW, Sydney, Australia; Centre for Infectious Diseases and Microbiology-Public Health, Westmead Hospital, Westmead, NSW, Australia
| | - Hemalatha Varadhan
- Department of Microbiology, NSW Health Pathology, John Hunter Hospital, Newcastle, NSW, Australia; University of Newcastle, Newcastle, NSW, Australia
| | - Syeda Naqvi
- Department of Microbiology, NSW Health Pathology, John Hunter Hospital, Newcastle, NSW, Australia; Department of Infectious Diseases, John Hunter Hospital, Newcastle, NSW, Australia; University of Newcastle, Newcastle, NSW, Australia
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Krishnan BK, Balasubramanian G, Kumar PP. Leptospirosis in India: insights on circulating serovars, research lacunae and proposed strategies to control through one health approach. ONE HEALTH OUTLOOK 2024; 6:11. [PMID: 38849946 PMCID: PMC11161969 DOI: 10.1186/s42522-024-00098-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 02/23/2024] [Indexed: 06/09/2024]
Abstract
Leptospirosis is one of the most neglected zoonotic infections of public health concern worldwide and a remerging infection in tropical countries such as India. The infection least explored disease and the epidemiological and other critical data are scarce for the disease rate reported and to control the infection. Leptospirosis as sapronosis is as underrated as the infection itself, and this article aims to explore the significance of this aspect of the disease. The research review aimed at the epidemiological understanding of the infection to control the negative impact of the disease. A mixed review and analysis were carried out to understand the knowledge published on the critical and understudied areas like epidemiology, transmission, diagnosis, treatment, and control of infection. A systematic analysis was carried out to extract information about the reported circulating strains, and research lacunae in India with the published data available in PubMed. The article elaborately discusses crucial inference areas of infection transmission and addresses lacunae in critically unacclaimed areas of infection to control the spread of infection using one health approach (OHA), and strategies to control leptospiral infection are proposed. The article also reviewed how and why Leptospirosis can be best studied and controlled by "One health approach" in India.
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Affiliation(s)
- Baby Karpagam Krishnan
- Department of Health Research (D.H.R.), ICMR-National Institute of Epidemiology (ICMR-NIE), Indian Council of Medical Research, Ministry of Health & Family Welfare, Government of India, R-127, 2Nd Main Road, T.N.H.B. Layout, Ayapakkam, Chennai, Tamil Nadu, 600 077, India.
| | - Ganesh Balasubramanian
- Department of Health Research (D.H.R.), ICMR-National Institute of Epidemiology (ICMR-NIE), Indian Council of Medical Research, Ministry of Health & Family Welfare, Government of India, R-127, 2Nd Main Road, T.N.H.B. Layout, Ayapakkam, Chennai, Tamil Nadu, 600 077, India
| | - Pesingi Pavan Kumar
- Department of Veterinary Public Health and Epidemiology, Faculty of Veterinary and Animal Sciences, Rajiv Gandhi South Campus, Banaras Hindu University, Mirzapur, UP, 231001, India
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Kirkimbayeva Z, Biyashev B, Yermagambetova S, Kuzembekova G, Abdeliev B. A retrospective study of animal leptospirosis in Kazakhstan. J Adv Vet Anim Res 2024; 11:439-448. [PMID: 39101084 PMCID: PMC11296192 DOI: 10.5455/javar.2024.k793] [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: 08/24/2023] [Revised: 12/20/2023] [Accepted: 01/03/2024] [Indexed: 08/06/2024] Open
Abstract
Objective The purpose of the paper was to monitor the disease incidence in farm and wild animals in some areas of Kazakhstan, which are most susceptible to leptospirosis, and the typification of isolated pathogens, carried out under the scientific and technical program "Studying the epizootological characteristics of the country territory on particularly dangerous diseases and developing veterinary and sanitary measures to improve their effectiveness" in 2021-2023. Materials and Methods The material included the reports of veterinary laboratories on leptospirosis in recent years, as well as laboratory tests on samples carried out at the "SANA" research and development enterprise. During this period, 6,701 serum samples from farm animals and 86,651 serum samples from rodents were tested by enzyme-linked immunosorbent assay. Results The serological results showed antibody titers in the blood of 6.32% of cattle, 5.4% of sheep, 4.2% of horses, and 1.8% of pigs. The highest number of positive samples were found in Turkestan (12.3%), Almaty (11.7%), and Kyzylorda (11.4%) regions. Infection in rodents was lower and ranged from 0.34% to 0.07% during these years. The population of leptospira-causing diseases of animals on the territory of the country is represented by 8 serogroups. Studies in 2022 on the detection of pathogenic leptospires by polymerase chain reaction in 350 samples of blood serum from animals and 350 samples of biomaterial from rodents from different regions of Kazakhstan were negative. Conclusion Studies conducted as part of this work will help reduce the incidence of disease among the population and animals in Kazakhstan.
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Affiliation(s)
- Zhumagul Kirkimbayeva
- Department of Microbiology, Virology and Immunology, Kazakh National Agrarian Research University, Almaty, Kazakhstan
| | - Birzhan Biyashev
- Department of Microbiology, Virology and Immunology, Kazakh National Agrarian Research University, Almaty, Kazakhstan
| | - Svetlana Yermagambetova
- Department of Microbiology, Virology and Immunology, Kazakh National Agrarian Research University, Almaty, Kazakhstan
| | - Gulnur Kuzembekova
- Department of Microbiology, Virology and Immunology, Kazakh National Agrarian Research University, Almaty, Kazakhstan
| | - Bek Abdeliev
- Reference Laboratory, National Scientific Center for Especially Dangerous Infections named after Masgut Aikimbaev, Almaty, Kazakhstan
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Wilkinson DA, Edwards M, Shum C, Moinet M, Anderson NE, Benschop J, Nisa S. Molecular typing of Leptospira spp. in farmed and wild mammals reveals new host-serovar associations in New Zealand. N Z Vet J 2024; 72:1-9. [PMID: 37589061 DOI: 10.1080/00480169.2023.2248930] [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: 05/08/2023] [Accepted: 08/09/2023] [Indexed: 08/18/2023]
Abstract
AIMS To apply molecular typing to DNA isolated from historical samples to determine Leptospira spp. infecting farmed and wild mammals in New Zealand. MATERIALS AND METHODS DNA samples used in this study were extracted from urine, serum or kidney samples (or Leptospira spp. cultures isolated from them) collected between 2007 and 2017 from a range of domestic and wildlife mammalian species as part of different research projects at Massey University. Samples were included in the study if they met one of three criteria: samples that tested positive with a lipL32 PCR for pathogenic Leptospira; samples that tested negative by lipL32 PCR but were recorded as positive to PCR for pathogenic Leptospira in the previous studies; or samples that were PCR-negative in all studies but were from animals with positive agglutination titres against serogroup Tarassovi. DNA samples were typed using PCR that targeted either the glmU or gyrB genetic loci. The resulting amplicons were sequenced and typed relative to reference sequences. RESULTS We identified several associations between mammalian hosts and Leptospira strains/serovars that had not been previously reported in New Zealand. Leptospira borgpetersenii strain Pacifica was found in farmed red deer (Cervus elaphus) samples, L. borgpetersenii serovars Balcanica and Ballum were found in wild red deer samples, Leptospira interrogans serovar Copenhageni was found in stoats (Mustela erminea) and brushtail possums (Trichosurus vulpecula), and L. borgpetersenii was found in a ferret (Mustela putorius furo). Furthermore, we reconfirmed previously described associations including dairy cattle with L. interrogans serovars Copenhageni and Pomona and L. borgpetersenii serovars Ballum, Hardjo type bovis and strain Pacifica, sheep with L. interrogans serovar Pomona and L. borgpetersenii serovar Hardjo type bovis, brushtail possum with L. borgpetersenii serovar Balcanica, farmed deer with L. borgpetersenii serovar Hardjo type bovis and hedgehogs (Erinaceus europaeus) with L. borgpetersenii serovar Ballum. CONCLUSIONS This study provides an updated summary of host-Leptospira associations in New Zealand and highlights the importance of molecular typing. Furthermore, strain Pacifica, which was first identified as Tarassovi using serological methods in dairy cattle in 2016, has circulated in animal communities since at least 2007 but remained undetected as serology is unable to distinguish the different genotypes. CLINICAL RELEVANCE To date, leptospirosis in New Zealand has been diagnosed with serological typing, which is deficient in typing all strains in circulation. Molecular methods are necessary to accurately type strains of Leptospira spp. infecting mammals in New Zealand.
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Affiliation(s)
- D A Wilkinson
- Molecular Epidemiology and Public Health Laboratory, Tāwharau Ora - School of Veterinary Sciences, Massey University, Palmerston North, New Zealand
| | - M Edwards
- The Royal (Dick) School of Veterinary Studies and the Roslin Institute, University of Edinburgh, Roslin, UK
| | - C Shum
- Molecular Epidemiology and Public Health Laboratory, Tāwharau Ora - School of Veterinary Sciences, Massey University, Palmerston North, New Zealand
| | - M Moinet
- Molecular Epidemiology and Public Health Laboratory, Tāwharau Ora - School of Veterinary Sciences, Massey University, Palmerston North, New Zealand
| | - N E Anderson
- The Royal (Dick) School of Veterinary Studies and the Roslin Institute, University of Edinburgh, Roslin, UK
| | - J Benschop
- Molecular Epidemiology and Public Health Laboratory, Tāwharau Ora - School of Veterinary Sciences, Massey University, Palmerston North, New Zealand
| | - S Nisa
- Molecular Epidemiology and Public Health Laboratory, Tāwharau Ora - School of Veterinary Sciences, Massey University, Palmerston North, New Zealand
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Khairulmunir M, Gani M, Karuppannan KV, Mohd-Ridwan AR, Md-Zain BM. High-throughput DNA metabarcoding for determining the gut microbiome of captive critically endangered Malayan tiger ( Pantheratigrisjacksoni) during fasting. Biodivers Data J 2023; 11:e104757. [PMID: 37711366 PMCID: PMC10498273 DOI: 10.3897/bdj.11.e104757] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Accepted: 08/23/2023] [Indexed: 09/16/2023] Open
Abstract
The Malayan tiger (Pantheratigrisjacksoni) is a critically endangered species native to the Malaysian Peninsula. To imitate wild conditions where tigers do not hunt every day, numerous wildlife sanctuaries do not feed their tigers daily. However, the effects of fasting on the gut microbiota of captive Malayan tigers remains unknown. This study aimed to characterise the gut microbiota of captive Malayan tigers by comparing their microbial communities during fasting versus normal feeding conditions. This study was conducted at the Melaka Zoo, Malaysian Peninsula and involved Malayan tigers fasted every Monday. In total, ten faecal samples of Malayan tiger, two of Bengal tiger (outgroup) and four of lion (outgroup) were collected and analysed for metabarcoding targeting the 16S rRNA V3-V4 region. In total, we determined 14 phyla, 87 families, 167 genera and 53 species of gut microbiome across Malayan tiger samples. The potentially harmful bacterial genera found in this study included Fusobacterium, Bacteroides, Clostridium sensu stricto 1, Solobacterium, Echerichiashigella, Ignatzschineria and Negativibacillus. The microbiome in the fasting phase had a higher composition and was more diverse than in the feeding phase. The present findings indicate a balanced ratio in the dominant phyla, reflecting a resetting of the imbalanced gut microbiota due to fasting. These findings can help authorities in how to best maintain and improve the husbandry and health of Malayan tigers in captivity and be used for monitoring in ex-situ veterinary care unit.
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Affiliation(s)
- Mohamad Khairulmunir
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, MalaysiaDepartment of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia43600 Bangi, SelangorMalaysia
| | - Millawati Gani
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, MalaysiaDepartment of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia43600 Bangi, SelangorMalaysia
- Department of Wildlife and National Parks (PERHILITAN), KM 10 Jalan Cheras, Kuala Lumpur, MalaysiaDepartment of Wildlife and National Parks (PERHILITAN), KM 10 Jalan CherasKuala LumpurMalaysia
| | - Kayal Vizi Karuppannan
- Department of Wildlife and National Parks (PERHILITAN), KM 10 Jalan Cheras, Kuala Lumpur, MalaysiaDepartment of Wildlife and National Parks (PERHILITAN), KM 10 Jalan CherasKuala LumpurMalaysia
| | - Abd Rahman Mohd-Ridwan
- Centre for Pre-University Studies, Universiti Malaysia Sarawak, 94300, Kota Samarahan, MalaysiaCentre for Pre-University Studies, Universiti Malaysia Sarawak, 94300Kota SamarahanMalaysia
| | - Badrul Munir Md-Zain
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, MalaysiaDepartment of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia43600 Bangi, SelangorMalaysia
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Limothai U, Tachaboon S, Dinhuzen J, Singh J, Jirawannaporn S, Leewongworasingh A, Thongpin M, Brameld S, Watanaboonyongcharoen P, Sitprija V, Tantawichien T, Thisyakorn U, Srisawat N. Seroprevalence of leptospirosis among blood donors in an endemic area. Sci Rep 2023; 13:12336. [PMID: 37524788 PMCID: PMC10390486 DOI: 10.1038/s41598-023-39461-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 07/25/2023] [Indexed: 08/02/2023] Open
Abstract
Thailand is known to be endemic for leptospirosis. This bacterium may pose a potential risk to transfusion safety. This study was a cross-sectional study examining the seroprevalence of leptospirosis among Thai blood donors. A total of 1053 serum specimens collected from blood donors residing in 5 regions of Thailand during March to September 2020 were included in this study. All samples were tested for the presence of antibodies to 22 leptospiral serovars using the microscopic agglutination test (MAT) and anti-Leptospira IgG antibodies using commercially available enzyme immunoassay. We found no evidence of recent exposure to Leptospira spp. in sera of healthy Thai blood donors by MAT, including those in higher-risk areas. However, in this same group, we did find small numbers of past exposure (1.7%) to Leptospira spp. by IgG ELISA. According to the findings of this study, there is currently no evidence for implementing new blood banking procedures to identify possible carriers in Thailand, however these should be continually monitored and revised according to the infectious disease burden in each country. It should be noted that there was a difference in the occupation rate between the general population reported in Thailand and blood donors in this study; it may not reflect the actual situation in the country.
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Affiliation(s)
- Umaporn Limothai
- Excellence Center for Critical Care Nephrology, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
- Center of Excellence in Critical Care Nephrology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Tropical Medicine Cluster, Chulalongkorn University, Bangkok, Thailand
| | - Sasipha Tachaboon
- Excellence Center for Critical Care Nephrology, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
- Center of Excellence in Critical Care Nephrology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Tropical Medicine Cluster, Chulalongkorn University, Bangkok, Thailand
| | - Janejira Dinhuzen
- Excellence Center for Critical Care Nephrology, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
- Center of Excellence in Critical Care Nephrology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Tropical Medicine Cluster, Chulalongkorn University, Bangkok, Thailand
| | - Jasleen Singh
- Tropical Medicine Cluster, Chulalongkorn University, Bangkok, Thailand
- School of Global Health, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Thailand Public Health Research Fellowship, Health Education England, London, UK
| | - Sirawit Jirawannaporn
- Excellence Center for Critical Care Nephrology, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
- Center of Excellence in Critical Care Nephrology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Tropical Medicine Cluster, Chulalongkorn University, Bangkok, Thailand
| | - Akarathep Leewongworasingh
- Excellence Center for Critical Care Nephrology, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
- Center of Excellence in Critical Care Nephrology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Tropical Medicine Cluster, Chulalongkorn University, Bangkok, Thailand
| | | | | | - Phandee Watanaboonyongcharoen
- Department of Laboratory Medicine, Faculty of Medicine, Chulalongkorn University and Transfusion Medicine Unit, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Visith Sitprija
- Thai Red Cross, Queen Saovabha Memorial Institute, Bangkok, Thailand
| | - Terapong Tantawichien
- Tropical Medicine Cluster, Chulalongkorn University, Bangkok, Thailand
- Division of Infectious Diseases, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Usa Thisyakorn
- Tropical Medicine Cluster, Chulalongkorn University, Bangkok, Thailand
| | - Nattachai Srisawat
- Excellence Center for Critical Care Nephrology, King Chulalongkorn Memorial Hospital, Bangkok, Thailand.
- Center of Excellence in Critical Care Nephrology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
- Tropical Medicine Cluster, Chulalongkorn University, Bangkok, Thailand.
- Division of Nephrology, Department of Medicine, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Bangkok, Thailand.
- Center for Critical Care Nephrology, The CRISMA Center, Department of Critical Care Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
- Academy of Science, Royal Society of Thailand, Bangkok, Thailand.
- Excellence Center for Critical Care Nephrology, Thai Red Cross Society, King Chulalongkorn Memorial Hospital, 1873, Rama 4 Rd., Lumphini, Pathumwan, Bangkok, 10330, Thailand.
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Nisa S, Vallee E, Marshall J, Collins-Emerson J, Yeung P, Prinsen G, Douwes J, Baker MG, Wright J, Quin T, Holdaway M, Wilkinson DA, Fayaz A, Littlejohn S, Benschop J. Leptospirosis in Aotearoa New Zealand: Protocol for a Nationwide Case-Control Study. JMIR Res Protoc 2023; 12:e47900. [PMID: 37289491 DOI: 10.2196/47900] [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: 04/04/2023] [Revised: 04/27/2023] [Accepted: 04/30/2023] [Indexed: 06/09/2023] Open
Abstract
BACKGROUND In Aotearoa New Zealand, 90% of patients with notified leptospirosis (a zoonotic bacterial disease) have been men working in agricultural industries. However, since 2008, the epidemiology of notified cases has been gradually changing, that is, more women are affected; there are more cases associated with occupations traditionally not considered high risk in New Zealand; infecting serovars have changed; and many patients experience symptoms long after infection. We hypothesized that there is a shift in leptospirosis transmission patterns with substantial burden on affected patients and their families. OBJECTIVE In this paper, we aimed to describe the protocols used to conduct a nationwide case-control study to update leptospirosis risk factors and follow-up studies to assess the burden and sources of leptospirosis in New Zealand. METHODS This study used a mixed methods approach, comprising a case-control study and 4 substudies that involved cases only. Cases were recruited nationwide, and controls were frequency matched by sex and rurality. All participants were administered a case-control questionnaire (study 1), with cases being interviewed again at least 6 months after the initial survey (study 2). A subset of cases from two high-risk populations, that is, farmers and abattoir workers, were further engaged in a semistructured interview (study 3). Some cases with regular animal exposure had their in-contact animals (livestock for blood and urine and wildlife for kidney) and environment (soil, mud, and water) sampled (study 4). Patients from selected health clinics suspected of leptospirosis also had blood and urine samples collected (study 5). In studies 4 and 5, blood samples were tested using the microscopic agglutination test to test for antibody titers against Leptospira serovars Hardjo type bovis, Ballum, Tarassovi, Pomona, and Copenhageni. Blood, urine, and environmental samples were also tested for pathogenic Leptospira DNA using polymerase chain reaction. RESULTS Participants were recruited between July 22, 2019, and January 31, 2022, and data collection for the study has concluded. In total, 95 cases (July 25, 2019, to April 13, 2022) and 300 controls (October 19, 2019, to January 26, 2022) were interviewed for the case-control study; 91 cases participated in the follow-up interviews (July 9, 2020, to October 25, 2022); 13 cases participated in the semistructured interviews (January 26, 2021, to January 19, 2022); and 4 cases had their in-contact animals and environments sampled (October 28, 2020, and July 29, 2021). Data analysis for study 3 has concluded and 2 manuscripts have been drafted for review. Results of the other studies are being analyzed and the specific results of each study will be published as individual manuscripts.. CONCLUSIONS The methods used in this study may provide a basis for future epidemiological studies of infectious diseases. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) DERR1-10.2196/47900.
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Affiliation(s)
- Shahista Nisa
- Molecular Epidemiology and Public Health Laboratory, School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - Emilie Vallee
- EpiCentre, School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - Jonathan Marshall
- School of Mathematical and Computational Sciences, Massey University, Palmerston North, New Zealand
| | - Julie Collins-Emerson
- Molecular Epidemiology and Public Health Laboratory, School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - Polly Yeung
- School of Social Work, Massey University, Palmerston North, New Zealand
| | - Gerard Prinsen
- School of People, Environment and Planning, Massey University, Palmerston North, New Zealand
| | - Jeroen Douwes
- Research Centre for Hauora and Health, Massey University, Wellington, New Zealand
| | - Michael G Baker
- Department of Public Health, University of Otago, Wellington, New Zealand
| | - Jackie Wright
- Enteric and Leptospira Reference Laboratory, Institute of Environmental Science and Research, Christchurch, New Zealand
| | - Tanya Quin
- Goodfellow Unit, University of Auckland, Auckland, New Zealand
| | - Maureen Holdaway
- College of Health, Massey University, Palmerston North, New Zealand
| | - David A Wilkinson
- Unité Mixte de Recherche, Animal, Santé, Territoires, Risques et Ecosystèmes, Centre de coopération internationale en recherche agronomique pour le développement, Institut national de la recherche agronomique, University of Montpellier, Plateforme Technologique Cyclotron Réunion Océan Indien, Sainte-Clotilde, La Réunion, France
| | - Ahmed Fayaz
- Molecular Epidemiology and Public Health Laboratory, School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - Stuart Littlejohn
- Molecular Epidemiology and Public Health Laboratory, School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - Jackie Benschop
- Molecular Epidemiology and Public Health Laboratory, School of Veterinary Science, Massey University, Palmerston North, New Zealand
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Amran F, Noor Halim NA, Muhammad AH, Mohd Khalid MKN, Dasiman NM, Shamsusah NA, Abd Talib AKA, Noh MA, Mohd Ali MR, Hashim R. Application of Multilocus Sequence Typing for the Characterization of Leptospira Strains in Malaysia. Trop Med Infect Dis 2023; 8:tropicalmed8020069. [PMID: 36828484 PMCID: PMC9960323 DOI: 10.3390/tropicalmed8020069] [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: 09/26/2022] [Revised: 11/25/2022] [Accepted: 12/07/2022] [Indexed: 01/20/2023] Open
Abstract
Leptospirosis is a common zoonotic disease in tropical and subtropical countries. It is considered an emerging disease in Malaysia and is a notifiable disease. This study was conducted to characterize Malaysian isolates from human, animal and environmental samples via MLST and rrs2 sequencing in an attempt to develop a Malaysian genotypic database. An existing polymerase chain reaction (PCR)-based MLST scheme was performed to facilitate subsequent sequencing. Out of 46 extracted DNA, 36 had complete MLST profiles whereby all six genes were amplified and sequenced. Most of the pathogenic Leptospira genotypes with full MLST profiles were L. interrogans serogroup Bataviae (n = 17), followed by L. borgpetersenii serogroup Javanica (n = 9), L. interrogans serogroup Sejroe (n = 2), L. interrogans serogroup Australis (n = 2), L. kirschneri (n = 2), L. interrogans serogroup Grippotyphosa (n = 1) and L. interrogans serogroup Pyrogenes (n = 3). Two samples (R3_SER/17 and R4_SER/17) were not closely related with any of the reference strains. For the samples with incomplete MLST profiles, leptospiral speciation was conducted through rrs2 analysis, in which four samples were identified as L. borgpetersenii, five samples were closely related to L. kmetyi and one sample was known as L. yasudae. This study shows that molecular approaches that combine both MLST and rrs2 sequencing have great potential in the comprehensive characterization of pathogenic Leptospira because they can be performed directly from cultured and clinical samples.
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Affiliation(s)
- Fairuz Amran
- Bacteriology Unit, Infectious Disease Research Center (IDRC), Institute for Medical Research (IMR), NIH Complex Setia Alam, Shah Alam 40170, Malaysia
| | - Nurul Atiqah Noor Halim
- Bacteriology Unit, Infectious Disease Research Center (IDRC), Institute for Medical Research (IMR), NIH Complex Setia Alam, Shah Alam 40170, Malaysia
| | - Ayu Haslin Muhammad
- Bacteriology Unit, Infectious Disease Research Center (IDRC), Institute for Medical Research (IMR), NIH Complex Setia Alam, Shah Alam 40170, Malaysia
| | - Mohd Khairul Nizam Mohd Khalid
- Genetic Disorders and Inborn Error of Metabolism (IEM) Unit, Nutrition, Metabolic & Cardiovascular Research Centre (NMCRC), Institute for Medical Research (IMR), NIH Setia Alam, Shah Alam 40170, Malaysia
| | - Nur Mukmina Dasiman
- Bacteriology Unit, Infectious Disease Research Center (IDRC), Institute for Medical Research (IMR), NIH Complex Setia Alam, Shah Alam 40170, Malaysia
| | - Nadia Aqilla Shamsusah
- Bacteriology Unit, Infectious Disease Research Center (IDRC), Institute for Medical Research (IMR), NIH Complex Setia Alam, Shah Alam 40170, Malaysia
- Department of Earth Sciences and Environment, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
| | - Abdul Khalif Adha Abd Talib
- Bacteriology Unit, Infectious Disease Research Center (IDRC), Institute for Medical Research (IMR), NIH Complex Setia Alam, Shah Alam 40170, Malaysia
| | - Mohamed Asyraf Noh
- Bacteriology Unit, Infectious Disease Research Center (IDRC), Institute for Medical Research (IMR), NIH Complex Setia Alam, Shah Alam 40170, Malaysia
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia
| | - Mohammad Ridhuan Mohd Ali
- Bacteriology Unit, Infectious Disease Research Center (IDRC), Institute for Medical Research (IMR), NIH Complex Setia Alam, Shah Alam 40170, Malaysia
- Correspondence:
| | - Rohaidah Hashim
- Bacteriology Unit, Infectious Disease Research Center (IDRC), Institute for Medical Research (IMR), NIH Complex Setia Alam, Shah Alam 40170, Malaysia
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Strutzberg-Minder K, Ullerich A, Dohmann K, Boehmer J, Goris M. Comparison of Two Leptospira Type Strains of Serovar Grippotyphosa in Microscopic Agglutination Test (MAT) Diagnostics for the Detection of Infections with Leptospires in Horses, Dogs and Pigs. Vet Sci 2022; 9:vetsci9090464. [PMID: 36136680 PMCID: PMC9503138 DOI: 10.3390/vetsci9090464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/24/2022] [Accepted: 08/26/2022] [Indexed: 11/17/2022] Open
Abstract
Simple Summary Leptospires are bacteria of major health concern as they can cause severe systemic diseases in humans and animals alike. In routine diagnostics, the detection of a leptospirosis heavily relies on the analysis of specific antibodies that were generated by the immune system of an infected species. The most widely used test for the detection of such antibodies is the microscopic agglutination test which itself depends on defined types of laboratory grown Leptospires, so-called serovars. A good judgment of the behaviour of these serovars is vital for interpreting test results and clearly defining what type of Leptospires the patient is infected with as this may have implications for therapy and prognosis. In the following, a study on the reaction pattern of a certain type of serovars named ‘Grippotyphosa’ that itself can be divided into two differently reacting subtypes was conducted. It turned out that, depending on the animal species sampled, a differing reaction patterns to the two Grippotyphosa subtypes in the diagnostic test reflected different distribution of these subtypes in the respective populations. In the future, these insights will further improve test performance and assessment or results. Abstract The MAT test is of great importance in the diagnosis of leptospiral infections. Based on various differences, the serovar Grippotyphosa has been divided into two types, Moskva V and Duyster. Differences or similarities of the two type strains in the context of leptospiral diagnostics have not yet been elucidated in more detail; therefore both strains were analysed in MAT diagnostics for the detection of leptospiral infections in pigs, dogs and horses. Serum samples from 2996 pigs, 55 dogs and 35 horses, as well as vitreous and/or aqueous fluid samples from these and 13 additional horses were analysed by MAT; available supplementary samples were tested for leptospires by PCR. In pigs, 92.6% of the samples with both strains received an identical titre result in the MAT test, whereas in dogs and horses only 53.0% and 43.6% had concordant results. Since infections with the serovar Grippotyphosa occur more frequently in dogs and horses overall, more differences were observed here. In the case of discrepant serological results, supplementary samples and PCR examinations were not able to add information on the true status. Further analyses of follow-up studies or at least serum pairs from dogs and horses infected with the serovar Grippotyphosa are necessary.
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Affiliation(s)
- Katrin Strutzberg-Minder
- IVD Innovative Veterinary Diagnostics (IVD GmbH), 30926 Seelze, Germany
- Correspondence: ; Tel.: +49-(0)511-22002910
| | - Astrid Ullerich
- IVD Innovative Veterinary Diagnostics (IVD GmbH), 30926 Seelze, Germany
| | - Karen Dohmann
- IVD Innovative Veterinary Diagnostics (IVD GmbH), 30926 Seelze, Germany
| | - Jan Boehmer
- IVD Innovative Veterinary Diagnostics (IVD GmbH), 30926 Seelze, Germany
| | - Marga Goris
- OIE and National Collaborating Centre for Reference and Research on Leptospirosis, Department of Medical Microbiology and Infection Prevention, Amsterdam University Medical Centre, 1105 AZ Amsterdam, The Netherlands
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Bolwell C, Gee E, Adams B, Collins-Emerson J, Scarfe K, Nisa S, Gordon E, Rogers C, Benschop J. Longitudinal Testing of Leptospira Antibodies in Horses Located near a Leptospirosis Outbreak in Alpacas. Vet Sci 2022; 9:vetsci9080426. [PMID: 36006341 PMCID: PMC9414811 DOI: 10.3390/vetsci9080426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/25/2022] [Accepted: 08/09/2022] [Indexed: 12/02/2022] Open
Abstract
Simple Summary The objective of this study was to look at antibodies in repeated blood samples from horses kept near, or on, a farm where Leptospirosis was diagnosed in a herd of alpacas, resulting in kidney disease and abortion in the alpacas. Blood samples from horses in New Zealand have previously shown approximately 25% have antibodies to Leptospira, although there are few reports of clinical disease. Seven of twelve horses had positive antibody results during the current study, and two horses had high concentrations of antibodies in their blood together with evidence of leptospires in their urine. These results suggest the two horses could have been actively infected with Leptospira, and potentially be at risk of transmitting the disease to humans and other animals on the property. It was not able to be determined if there was a direct association between the positive horses in this study and the outbreak in alpacas. Potentially, there could have been a common exposure for both horses and alpacas, or one group may have infected the other. The potential risk of horses shedding leptospires that could infect humans, or other species, should not be overlooked in New Zealand. Abstract The objectives of this study were to determine if horses located near an outbreak of leptospirosis in alpacas had Leptospira titres indicative of a previous or current infection and, if so, to determine the magnitude in change of titres over time. Further, the objective was to determine if horses with high titre results were shedding Leptospira in their urine. Blood samples were collected from twelve horses located on or next to the farm with the outbreak in alpacas, on day zero and at four subsequent time points (two, four, six and nine weeks). The microscopic agglutination test was used to test sera for five serovars endemic in New Zealand: Ballum, Copenhageni, Hardjo, Pomona and Tarassovi. A reciprocal MAT titre cut-off of ≥1:100 was used to determine positive horses. Seven out of twelve horses (58%) were positive to at least one serovar during one of the time points. Two horses recorded titres of ≥1600, one for both Pomona and Copenhageni and the other for Hardjo, and these two horses were both PCR positive for Leptospira in their urine samples. For five out of seven horses, the titres either remained the same or changed by one dilution across the sampling time points. The study confirmed endemic exposure to five endemic Leptospira serovars in New Zealand in a group of horses located near a confirmed leptospirosis outbreak in alpacas.
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Affiliation(s)
- Charlotte Bolwell
- School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand
- Correspondence:
| | - Erica Gee
- School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand
| | - Brooke Adams
- School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand
| | | | - Katherine Scarfe
- IDEXX Laboratories (NZ) ULC, School of Veterinary Science Complex, Massey University, Palmerston North 4442, New Zealand
| | - Shahista Nisa
- School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand
| | - Emma Gordon
- School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand
| | - Chris Rogers
- School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand
- School of Agriculture and Environment, Massey University, Palmerston North 4442, New Zealand
| | - Jackie Benschop
- School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand
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