1
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Hough I, O'Handley R, Speight N. Cryptosporidium-associated enteritis in captive koalas (Phascolarctos cinereus). Aust Vet J 2024; 102:313-315. [PMID: 38342576 DOI: 10.1111/avj.13323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 12/20/2023] [Accepted: 01/21/2024] [Indexed: 02/13/2024]
Abstract
Cryptosporidium spp. sporadically infect a range of Australian native mammals including koalas, red kangaroos, eastern grey kangaroos, bilbies and brush tailed possums and can range from asymptomatic to fatal infections. Traditionally considered a disease of the young or immuno-compromised, and resulting in profuse diarrhoea in other species, here we report an atypical clinical syndrome associated with Cryptosporidium in a captive population of koalas. All affected animals were in-contact adults, and demonstrated anorexia, dehydration and abdominal pain in the absence of diarrhoea. Following euthanasia on welfare grounds, Cryptosporidium infection was confirmed postmortem in three of four symptomatic animals via faecal floatation and/or intestinal histopathology, with enteritis also diagnosed in the fourth koala. Further screening of the captive colony found the outbreak had been contained. Based on sequencing the cause of the infection was C. fayeri, but the source was undetermined. In conclusion, Cryptosporidium should be considered as a possible cause of generalised illness in koalas.
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Affiliation(s)
- I Hough
- School of Animal and Veterinary Science, University of Adelaide, Roseworthy Campus, Roseworthy, South Australia, 5371, Australia
| | - R O'Handley
- School of Animal and Veterinary Science, University of Adelaide, Roseworthy Campus, Roseworthy, South Australia, 5371, Australia
| | - N Speight
- School of Animal and Veterinary Science, University of Adelaide, Roseworthy Campus, Roseworthy, South Australia, 5371, Australia
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2
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Golomazou E, Mamedova S, Eslahi AV, Karanis P. Cryptosporidium and agriculture: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 916:170057. [PMID: 38242460 DOI: 10.1016/j.scitotenv.2024.170057] [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: 08/04/2023] [Revised: 12/22/2023] [Accepted: 01/08/2024] [Indexed: 01/21/2024]
Abstract
Cryptosporidiosis is a significant contributor to global foodborne and waterborne disease burden. It is a widespread cause of diarrheal diseases that affect humans and animals worldwide. Agricultural environments can become a source of contamination with Cryptosporidium species through faecal material derived from humans and animals. This review aims to report the main findings of scientific research on Cryptosporidium species related to various agricultural sectors, and highlights the risks of cryptosporidiosis in agricultural production, the contamination sources, the importance of animal production in transmission, and the role of farmed animals as hosts of the parasites. Agricultural contamination sources can cause water pollution in groundwater and different surface waters used for drinking, recreational purposes, and irrigation. The application of contaminated manure, faecal sludge management, and irrigation with inadequately treated water are the main concerns associated with foodborne and waterborne cryptosporidiosis related to agricultural activities. The review emphasizes the public health implications of agriculture concerning the transmission risk of Cryptosporidium parasites and the urgent need for a new concept in the agriculture sector. Furthermore, the findings of this review provide valuable information for developing appropriate measures and monitoring strategies to minimize the risk of infection.
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Affiliation(s)
- Eleni Golomazou
- Department of Ichthyology and Aquatic Environment - Aquaculture Laboratory, School of Agricultural Sciences, University of Thessaly, Fytokou str., 38446 Volos, Greece
| | - Simuzer Mamedova
- Institute of Zoology, Ministry of Science and Education Republic of Azerbaijan, Baku, Azerbaijan & Department of Life Sciences, Khazar University, Baku, Azerbaijan
| | - Aida Vafae Eslahi
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Panagiotis Karanis
- University of Cologne, Medical Faculty and University Hospital, 50931 Cologne, Germany; University of Nicosia Medical School, Department of Basic and Clinical Sciences, Anatomy Centre, 2408 Nicosia, Cyprus.
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3
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Egan S, Barbosa AD, Feng Y, Xiao L, Ryan U. The risk of wild birds contaminating source water with zoonotic Cryptosporidium and Giardia is probably overestimated. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169032. [PMID: 38123098 DOI: 10.1016/j.scitotenv.2023.169032] [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: 10/27/2023] [Revised: 11/29/2023] [Accepted: 11/29/2023] [Indexed: 12/23/2023]
Abstract
Cryptosporidium and Giardia are important waterborne protozoan parasites that are resistant to disinfectants commonly used for drinking water. Wild birds, especially wild migratory birds, are often implicated in the contamination of source and wastewater with zoonotic diseases, due to their abundance near water and in urban areas and their ability to spread enteric pathogens over long distances. This review summarises the diversity of Cryptosporidium and Giardia in birds, with a focus on zoonotic species, particularly in wild and migratory birds, which is critical for understanding zoonotic risks. The analysis revealed that both avian-adapted and zoonotic Cryptosporidium species have been identified in birds but that avian-adapted Cryptosporidium species dominate in wild migratory birds. Few studies have examined Giardia species and assemblages in birds, but the non-zoonotic Giardia psittaci and Giardia ardeae are the most commonly reported species. The identification of zoonotic Cryptosporidium and Giardia in birds, particularly C. parvum and G. duodenalis assemblages A and B in wild migratory birds, is likely due to mechanical carriage or spillback from birds co-grazing pastures contaminated with C. parvum from livestock. Therefore, the role of wild migratory birds in the transmission of zoonotic Cryptosporidium and Giardia to source water is likely overestimated. To address knowledge gaps, it is important to conduct more extensive studies on the prevalence of Cryptosporidium and Giardia in a broader range of migratory wild birds. There is also a need to investigate the extent to which zoonotic infections with C. hominis/C. parvum and G. duodenalis assemblages A and B are mechanical and/or transient, and to assess the load and viability of zoonotic oo/cysts shed in avian faeces. Understanding the contribution of birds to zoonoses is essential for effective disease surveillance, prevention, and control.
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Affiliation(s)
- Siobhon Egan
- Harry Butler Institute, Vector- and Water-Borne Pathogen Research Group, Murdoch University, Murdoch, Western Australia 6150, Australia.
| | - Amanda D Barbosa
- Harry Butler Institute, Vector- and Water-Borne Pathogen Research Group, Murdoch University, Murdoch, Western Australia 6150, Australia; CAPES Foundation, Ministry of Education of Brazil, Brasilia, DF 70040-020, Brazil
| | - Yaoyu Feng
- Guangdong Laboratory for Lingnan Modern Agriculture, Center for Emerging and Zoonotic Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Lihua Xiao
- Guangdong Laboratory for Lingnan Modern Agriculture, Center for Emerging and Zoonotic Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Una Ryan
- Harry Butler Institute, Vector- and Water-Borne Pathogen Research Group, Murdoch University, Murdoch, Western Australia 6150, Australia
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4
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Barbosa AD, Egan S, Feng Y, Xiao L, Balogun S, Ryan U. Zoonotic Cryptosporidium and Giardia in marsupials-an update. Parasitol Res 2024; 123:107. [PMID: 38253768 PMCID: PMC10803519 DOI: 10.1007/s00436-024-08129-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 01/16/2024] [Indexed: 01/24/2024]
Abstract
Marsupials, inhabiting diverse ecosystems, including urban and peri-urban regions in Australasia and the Americas, intersect with human activities, leading to zoonotic spill-over and anthroponotic spill-back of pathogens, including Cryptosporidium and Giardia. This review assesses the current knowledge on the diversity of Cryptosporidium and Giardia species in marsupials, focusing on the potential zoonotic risks. Cryptosporidium fayeri and C. macropodum are the dominant species in marsupials, while in possums, the host-specific possum genotype dominates. Of these three species/genotypes, only C. fayeri has been identified in two humans and the zoonotic risk is considered low. Generally, oocyst shedding in marsupials is low, further supporting a low transmission risk. However, there is some evidence of spill-back of C. hominis into kangaroo populations, which requires continued monitoring. Although C. hominis does not appear to be established in small marsupials like possums, comprehensive screening and analysis are essential for a better understanding of the prevalence and potential establishment of zoonotic Cryptosporidium species in small marsupials. Both host-specific and zoonotic Giardia species have been identified in marsupials. The dominance of zoonotic G. duodenalis assemblages A and B in marsupials may result from spill-back from livestock and humans and it is not yet understood if these are transient or established infections. Future studies using multilocus typing tools and whole-genome sequencing are required for a better understanding of the zoonotic risk from Giardia infections in marsupials. Moreover, much more extensive screening of a wider range of marsupial species, particularly in peri-urban areas, is required to provide a clearer understanding of the zoonotic risk of Cryptosporidium and Giardia in marsupials.
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Affiliation(s)
- Amanda D Barbosa
- Harry Butler Institute, Vector- and Water-Borne Pathogens Research Group, Murdoch University, Murdoch, Western Australia, 6150, Australia.
- CAPES Foundation, Ministry of Education of Brazil, Brasilia, DF, 70040-020, Brazil.
| | - Siobhon Egan
- Harry Butler Institute, Vector- and Water-Borne Pathogens Research Group, Murdoch University, Murdoch, Western Australia, 6150, Australia
| | - Yaoyu Feng
- Guangdong Laboratory for Lingnan Modern Agriculture, Center for Emerging and Zoonotic Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Lihua Xiao
- Guangdong Laboratory for Lingnan Modern Agriculture, Center for Emerging and Zoonotic Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Samson Balogun
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Wales, United Kingdom
| | - Una Ryan
- Harry Butler Institute, Vector- and Water-Borne Pathogens Research Group, Murdoch University, Murdoch, Western Australia, 6150, Australia
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Carbonara M, Mendonza-Roldan JA, Perles L, Alfaro-Alarcon A, Romero LM, Murillo DB, Piche-Ovares M, Corrales-Aguilar E, Iatta R, Walochnik J, Santoro M, Otranto D. Parasitic fauna of bats from Costa Rica. Int J Parasitol Parasites Wildl 2022; 20:63-72. [PMID: 36655207 PMCID: PMC9841367 DOI: 10.1016/j.ijppaw.2022.12.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/29/2022] [Accepted: 12/29/2022] [Indexed: 01/01/2023]
Abstract
Bats are important reservoirs and spreaders of pathogens, including those of zoonotic concern. Though Costa Rica hosts one of the highest bat species' diversity, no information is available about their parasites. In order to investigate the occurrence of vector-borne pathogens (VBPs) and gastrointestinal (GI) parasites of chiropterans from this neotropical area, ectoparasites (n = 231) and stools (n = 64) were collected from 113 bats sampled in Santa Cruz (site 1) and Talamanca (site 2). Mites, fleas and ticks were morphologically and molecularly identified, as well as pathogens transmitted by vectors (VBPs, i.e., Borrelia spp., Rickettsia spp., Bartonella spp.) and from feces, such as Giardia spp., Cryptosporidium spp. and Eimeria spp. were molecularly investigated. Overall, 21 bat species belonging to 15 genera and 5 families were identified of which 42.5% were infested by ectoparasites, with a higher percentage of mites (38.9%, i.e., Cameronieta sp. and Mitonyssoides sp.) followed by flies (2.6%, i.e., Joblingia sp.) and tick larvae (1.7%, i.e., Ornithodoros sp.). Rickettsia spp. was identified in one immature tick and phylogenetically clustered with two Rickettsia species of the Spotted Fever Group (i.e., R. massiliae and R. rhipicephali). The frequency of GI parasite infection was 14%, being 3.1% of bats infected by Giardia spp. (un-identified non-duodenalis species), 1.5% by Eimeria spp. and 9.4% by Cryptosporidium spp. (bat and rodent genotypes; one C. parvum-related human genotype). The wide range of ectoparasites collected coupled with the detection of Rickettsia sp., Giardia and Cryptosporidium in bats from Costa Rica highlight the role these mammals may play as spreaders of pathogens and the need to further investigate the pathogenic potential of these parasites.
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Affiliation(s)
| | | | - Lívia Perles
- Department of Veterinary Medicine, University of Bari, Valenzano, Italy
| | | | | | - Daniel Barrantes Murillo
- Pathology Department, National University, Heredia, Costa Rica,Department of Pathobiology, College of Veterinary Medicine, Alabama, USA
| | - Marta Piche-Ovares
- Research Center for Tropical Diseases, Faculty of Microbiology, University of Costa Rica, San José, Costa Rica,Department of Virology, School of Veterinary Medicine, National University, Heredia, Costa Rica
| | | | - Roberta Iatta
- Interdisciplinary Department of Medicine, University of Bari, Bari, Italy
| | - Julia Walochnik
- Institute of Specific Prophylaxis and Tropical Medicine, University of Vienna, Vienna, Austria
| | - Mario Santoro
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Naples, Italy
| | - Domenico Otranto
- Department of Veterinary Medicine, University of Bari, Valenzano, Italy,Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, Iran,Corresponding author. Department of Veterinary Medicine, University of Bari, Valenzano, 70010, Bari, Italy.
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6
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Nakashima FT, Fonseca ABM, Coelho LFDO, Barbosa ADS, Bastos OMP, Uchôa CMA. Cryptosporidium species in non-human animal species in Latin America: Systematic review and meta-analysis. Vet Parasitol Reg Stud Reports 2022; 29:100690. [PMID: 35256118 DOI: 10.1016/j.vprsr.2022.100690] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 01/10/2022] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
Cryptosporidiosis is an infection caused by a protozoon that inhabits the gastrointestinal tract. More than forty valid species have been described in the genus Cryptosporidium, infecting a broad range of hosts around the world, some with zoonotic transmission and others with predominant anthroponotic transmission. Prevalence studies conducted in Latin American countries have been specific, without consolidating information on species prevalences. Thus, the aim of this study was to perform a systematic review and meta-analysis addressing the prevalence of Cryptosporidium species in animals in Latin America. The estimated pooled prevalence rate for cryptosporidiosis in animals, by means of meta-analysis with a random-effects model, based on species identification, was 18.0% (95% CI 11.0%-27.0%) with high heterogeneity. The estimated overall prevalence was 20.3% (36/177) in pets, 19.9% (1309/6573) in livestock animals and 23.9% (954/3995) in exotic/captive animals. Evidence of circulation of 16 Cryptosporidium species was found in five Latin American countries: Brazil, Colombia, Chile, Argentina and Mexico. Through meta-analysis with a random-effects model, the pooled prevalence rate for Cryptosporidium parvum was 0.7% (95% CI 0.2%-2.4%). Cryptosporidium felis (8.5%) was the most prevalent species in pets, C. parvum (10.3%) in livestock animals and Cryptosporidium galli (17.6%) in exotic/captive animals. C. parvum was the species with the greatest geographical dispersion, which can be explained by its eurixenic and zoonotic potential. Few studies on cryptosporidiosis in animals in Latin America were found, which shows that there is a need for investment in and expansion of studies on this parasite. The pooled prevalence of C. parvum in Latin America and its wide circulation are similar to what has been observed in other developing regions, which reaffirms the importance of this species as the cause of a neglected, emerging and zoonotic parasitosis.
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Affiliation(s)
- Flávia Terumi Nakashima
- Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Rua Professor Hernani Pires de Melo 101, Centro, Niterói, RJ 24210-130, Brazil.
| | - Ana Beatriz Monteiro Fonseca
- Department of Statistics, Institute of Mathematics and Statistics, Fluminense Federal University, Rua Professor Marcos Waldemar de Freitas Reis s/n, Blocos G e H, Campus do Gragoatá, São Domingos, Niterói, RJ 24210-201, Brazil
| | - Luiz Fernando de Oliveira Coelho
- Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Rua Professor Hernani Pires de Melo 101, Centro, Niterói, RJ 24210-130, Brazil
| | - Alynne da Silva Barbosa
- Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Rua Professor Hernani Pires de Melo 101, Centro, Niterói, RJ 24210-130, Brazil
| | - Otilio Machado Pereira Bastos
- Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Rua Professor Hernani Pires de Melo 101, Centro, Niterói, RJ 24210-130, Brazil
| | - Claudia Maria Antunes Uchôa
- Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Rua Professor Hernani Pires de Melo 101, Centro, Niterói, RJ 24210-130, Brazil.
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7
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Forbes O, Hosking R, Mokany K, Lal A. Bayesian spatio-temporal modelling to assess the role of extreme weather, land use change and socio-economic trends on cryptosporidiosis in Australia, 2001-2018. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 791:148243. [PMID: 34412375 DOI: 10.1016/j.scitotenv.2021.148243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/23/2021] [Accepted: 05/29/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Intensification of land use threatens to increase the emergence and prevalence of zoonotic diseases, with an adverse impact on human wellbeing. Understanding how the interaction between agriculture, natural systems, climate and socioeconomic drivers influence zoonotic disease distribution is crucial to inform policy planning and management to limit the emergence of new infections. OBJECTIVES Here we assess the relative contribution of environmental, climatic and socioeconomic factors influencing reported cryptosporidiosis across Australia from 2001 to 2018. METHODS We apply a Bayesian spatio-temporal analysis using Integrated Nested Laplace Approximation (INLA). RESULTS We find that area-level risk of reported disease are associated with the proportions of the population under 5 and over 65 years of age, socioeconomic disadvantage, annual rainfall anomaly, and the proportion of natural habitat remaining. This combination of multiple factors influencing cryptosporidiosis highlights the benefits of a sophisticated spatio-temporal statistical approach. Two key findings from our model include: an estimated 4.6% increase in the risk of reported cryptosporidiosis associated with 22.8% higher percentage of postal area covered with original habitat; and an estimated 1.8% increase in disease risk associated with a 77.99 mm increase in annual rainfall anomaly at the postal area level. DISCUSSION These results provide novel insights regarding the predictive effects of extreme rainfall and the proportion of remaining natural habitat, which add unique explanatory power to the model alongside the variance associated with other predictive variables and spatiotemporal variation in reported disease. This demonstrates the importance of including perspectives from land and water management experts for policy making and public health responses to manage environmentally mediated diseases, including cryptosporidiosis.
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Affiliation(s)
- Owen Forbes
- Research School of Population Health, Australian National University, Acton, Australia; School of Mathematical Sciences, Queensland University of Technology, Brisbane, Australia; ARC Centre of Excellence for Mathematical and Statistical Frontiers (ACEMS), Brisbane, Australia
| | - Rose Hosking
- Research School of Population Health, Australian National University, Acton, Australia
| | - Karel Mokany
- Macroecological Modelling, CSIRO Land & Water, Black Mountain Laboratories, Canberra, ACT, Australia
| | - Aparna Lal
- Research School of Population Health, Australian National University, Acton, Australia.
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8
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Petterson S, Bradford-Hartke Z, Leask S, Jarvis L, Wall K, Byleveld P. Application of QMRA to prioritise water supplies for Cryptosporidium risk in New South Wales, Australia. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 784:147107. [PMID: 34088069 DOI: 10.1016/j.scitotenv.2021.147107] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 03/31/2021] [Accepted: 04/09/2021] [Indexed: 06/12/2023]
Abstract
A Quantitative Microbial Risk Assessment (QMRA) framework was applied to assess 312 drinking water supply systems across regional New South Wales (NSW). The framework was needed to support the implementation of a recommendation in the Australian Drinking Water Guidelines (ADWG) for appropriate treatment barriers to be operating in systems 'at risk' for Cryptosporidium. The objective was to prioritise systems so that those with the highest risk could be identified and addressed first. The framework was developed in a pilot study of 30 systems, selected to represent the range of water supplies across regional NSW. From these, source water categories were defined to represent local conditions with reference to the literature and Cryptosporidium risk factors. Values for Cryptosporidium oocyst concentration were assigned to the categories to allow quantification of the health risk from those water sources. The framework was then used to assess the risks in all 312 regional drinking water supply systems. Combining the disciplined approach of QMRA with simple catchment and treatment information and categorical risk outputs provided a useful and transparent method for prioritising systems for further investigation and potential risk management intervention. The risk rankings for drinking water supplies from this QMRA process have been used to set priorities for a large State Government funding program.
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Affiliation(s)
- S Petterson
- Water& Health Pty Ltd, North Sydney, Australia; School of Medicine, Griffith University, Australia.
| | - Z Bradford-Hartke
- Water Unit, Environmental Health Branch, NSW Health, St Leonards, Australia
| | - S Leask
- Water Unit, Environmental Health Branch, NSW Health, St Leonards, Australia
| | - L Jarvis
- Water Unit, Environmental Health Branch, NSW Health, St Leonards, Australia
| | - K Wall
- Water Unit, Environmental Health Branch, NSW Health, St Leonards, Australia
| | - P Byleveld
- Water Unit, Environmental Health Branch, NSW Health, St Leonards, Australia
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9
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Davies C, Wright W, Wedrowicz F, Pacioni C, Hogan FE. Delineating genetic management units of sambar deer (Rusa unicolor) in south-eastern Australia, using opportunistic tissue sampling and targeted scat collection. WILDLIFE RESEARCH 2021. [DOI: 10.1071/wr19235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Phiri BJ, Pita AB, Hayman DTS, Biggs PJ, Davis MT, Fayaz A, Canning AD, French NP, Death RG. Does land use affect pathogen presence in New Zealand drinking water supplies? WATER RESEARCH 2020; 185:116229. [PMID: 32791457 DOI: 10.1016/j.watres.2020.116229] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 06/30/2020] [Accepted: 07/23/2020] [Indexed: 06/11/2023]
Abstract
Four microbes (Campylobacter spp., Escherichia coli, Cryptosporidium spp. and Giardia spp.) were monitored in 16 waterways that supply public drinking water for 13 New Zealand towns and cities. Over 500 samples were collected from the abstraction point at each study site every three months between 2009 and 2019. The waterways represent a range from small to large, free flowing to reservoir impoundments, draining catchments of entirely native vegetation to those dominated by pastoral agriculture. We used machine learning algorithms to explore the relative contribution of land use, catchment geology, vegetation, topography, and water quality characteristics of the catchment to determining the abundance and/or presence of each microbe. Sites on rivers draining predominantly agricultural catchments, the Waikato River, Oroua River and Waiorohi Stream had all four microbes present, often in high numbers, throughout the sampling interval. Other sites, such as the Hutt River and Big Huia Creek in Wellington which drain catchments of native vegetation, never had pathogenic microbes detected, or unsafe levels of E. coli. Boosted Regression Tree models could predict abundances and presence/absence of all four microbes with good precision using a wide range of potential environmental predictors covering land use, geology, vegetation, topography, and nutrient concentrations. Models were more accurate for protozoa than bacteria but did not differ markedly in their ability to predict abundance or presence/absence. Environmental drivers of microbe abundance or presence/absence also differed depending on whether the microbe was protozoan or bacterial. Protozoa were more prevalent in waterways with lower water quality, higher numbers of ruminants in the catchment, and in September and December. Bacteria were more abundant with higher rainfall, saturated soils, and catchments with greater than 35% of the land in agriculture. Although modern water treatment protocols will usually remove many pathogens from drinking water, several recent outbreaks of waterborne disease due to treatment failures, have highlighted the need to manage water supplies on multiple fronts. This research has identified potential catchment level variables, and thresholds, that could be better managed to reduce the potential for pathogens to enter drinking water supplies.
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Affiliation(s)
- Bernard J Phiri
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, Massey University, Private Bag, 11 222, Palmerston North 4442, New Zealand
| | - Anthony B Pita
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, Massey University, Private Bag, 11 222, Palmerston North 4442, New Zealand
| | - David T S Hayman
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, Massey University, Private Bag, 11 222, Palmerston North 4442, New Zealand
| | - Patrick J Biggs
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, Massey University, Private Bag, 11 222, Palmerston North 4442, New Zealand
| | - Meredith T Davis
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, Massey University, Private Bag, 11 222, Palmerston North 4442, New Zealand; Innovative River Solutions, School of Agriculture and Environment, Massey University, Private Bag, 11 222, Palmerston North 4442, New Zealand
| | - Ahmed Fayaz
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, Massey University, Private Bag, 11 222, Palmerston North 4442, New Zealand
| | - Adam D Canning
- Centre for Tropical Water and Aquatic Ecosystem Research, James Cook University, Townsville QLD 4811, Australia
| | - Nigel P French
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, Massey University, Private Bag, 11 222, Palmerston North 4442, New Zealand
| | - Russell G Death
- Innovative River Solutions, School of Agriculture and Environment, Massey University, Private Bag, 11 222, Palmerston North 4442, New Zealand.
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11
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Taghipour A, Olfatifar M, Foroutan M, Bahadory S, Malih N, Norouzi M. Global prevalence of Cryptosporidium infection in rodents: A systematic review and meta-analysis. Prev Vet Med 2020; 182:105119. [PMID: 32823254 DOI: 10.1016/j.prevetmed.2020.105119] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 08/08/2020] [Accepted: 08/08/2020] [Indexed: 11/17/2022]
Abstract
The One-Health approach implies that the health of people is connected to the health of animals and the environment. Rodents, which are abundant and widespread, have been considered the major reservoirs of Cryptosporidium infection in humans and other animals. However, there is a paucity of information about global patterns of occurrence of Cryptosporidium in rodents. This systematic review and meta-analysis aimed to estimate the pooled global prevalence of Cryptosporidium infection and associated risk factors in rodents. International databases (PubMed, Web of Science, Scopus, and Google scholar) were systematically searched to identify relevant studies. A random-effects meta-analysis model was used to estimate the overall and the subgroup-pooled prevalence of Cryptosporidium across studies, and the variance between studies (heterogeneity) were quantified by I2 index. The data were classified according to WHO-region, type of diagnostic methods, different kinds of rodents, and specific risk factors, including geographical and climate parameters. Eighty-four articles (including 92 datasets), from 29 countries met eligibility criteria for analysis. The pooled global prevalence (95% CI) of Cryptosporidium infection in rodents was 17% (13-20%), being highest in North American and Caribbean regions 27% (16-40%) and lowest in South American 5% (0-16%) countries. Considering the detection methods, the pooled prevalence was estimated to be 25% (13-39%) using coproantigen detection methods, 17% (13-23%) using molecular detection methods, and 14% (9-20%) using microscopic detection methods. The highest prevalence of Cryptosporidium was found in muskrats 47% (27-68%), while Meriones persicus 1% (0-3%) had the lowest prevalence. These results emphasize the role of rodents as reservoir hosts for human-infecting Cryptosporidium. This highlights the need for an increased focus on implementing affordable, appropriate control programs to reduce the public health threat of cryptosporidiosis as a zoonosis of global importance.
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Affiliation(s)
- Ali Taghipour
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
| | - Meysam Olfatifar
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Saeed Bahadory
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Narges Malih
- Social Determinants of Health Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mojtaba Norouzi
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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12
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Takaki Y, Takami Y, Watanabe T, Nakaya T, Murakoshi F. Molecular identification of Cryptosporidium isolates from ill exotic pet animals in Japan including a new subtype in Cryptosporidium fayeri. VETERINARY PARASITOLOGY- REGIONAL STUDIES AND REPORTS 2020; 21:100430. [PMID: 32862916 PMCID: PMC7324920 DOI: 10.1016/j.vprsr.2020.100430] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 06/22/2020] [Accepted: 06/27/2020] [Indexed: 11/27/2022]
Abstract
Cryptosporidium is an obligate intracellular parasite which can cause fatal diarrheal disease in exotic animals. Sugar gliders (Petaurus breviceps), hedgehogs (Atelerix albiventris), chinchillas (Chinchilla lanigera), and common leopard geckos (Eublepharis macularius) are popular exotic animals commonly sold in pet shops in Japan. We herein investigated the species and subtypes of Cryptosporidium in these animals. Cryptosporidium fayeri was detected in a sugar glider in a Japanese animal hospital. Sequence analyses of the 60-kDa glycoprotein (gp60) gene revealed that C. fayeri belonged to subtype family IVh (IVhA13G2T1), which was proposed to be a new subtype. This is the first study to report C. fayeri infection in a sugar glider. In other animals, the Cryptosporidium horse genotype, C. ubiquitum, and C. varanii were detected in two four-toed hedgehogs (A. albiventris), a chinchilla (C. lanigera), and common leopard gecko (E. macularius), respectively. The gp60 subtypes identified were VIbA13 of the horse genotype and XIId of C. ubiquitum. The present results revealed that potentially zoonotic Cryptosporidium is widespread in exotic animals in Japan. Cryptosporidium was detected from ill exotic pet animals in Japan. Cryptosporidium fayeri was detected for the first time from a sugar glider. The new 60-kDa glycoprotein (gp60) subtype family IVh was detected from Cryptosporidium fayeri.
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Affiliation(s)
- Youki Takaki
- Verts Animal Hospital, 1F Kyuso Bldg 2-21-5, Naka, Hakata-ku, Fukuoka-shi, Fukuoka 812-0893, Japan
| | - Yoshinori Takami
- Verts Animal Hospital, 1F Kyuso Bldg 2-21-5, Naka, Hakata-ku, Fukuoka-shi, Fukuoka 812-0893, Japan
| | - Takehiro Watanabe
- Verts Animal Hospital, 1F Kyuso Bldg 2-21-5, Naka, Hakata-ku, Fukuoka-shi, Fukuoka 812-0893, Japan
| | - Takaaki Nakaya
- Department of Infectious Diseases, Kyoto Prefectural University of Medicine, 465 Kajii-cho Kawaramachi-Hirokoji, Kamigyo-ku Kyoto 602-8566, Japan
| | - Fumi Murakoshi
- Department of Infectious Diseases, Kyoto Prefectural University of Medicine, 465 Kajii-cho Kawaramachi-Hirokoji, Kamigyo-ku Kyoto 602-8566, Japan.
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13
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Davies C, Wright W, Hogan FE, Davies H. Detectability and activity patterns of sambar deer (Rusa unicolor) in Baw Baw National Park, Victoria. AUSTRALIAN MAMMALOGY 2020. [DOI: 10.1071/am19029] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Introduced sambar deer (Rusa unicolor) are increasing in abundance and distribution across much of south-eastern Australia and causing damage to native ecosystems. However, the current paucity of knowledge surrounding many aspects of sambar deer ecology is limiting our capacity to make informed management decisions, and properly gauge the extent of deer impacts. Here we investigate correlates of sambar deer detectability and describe activity patterns of sambar deer in Baw Baw National Park (BBNP) to inform control operations. Camera traps were deployed in BBNP between October and December 2016. We used an occupancy modelling framework to investigate sambar deer detectability and camera trap record time stamps to determine sambar deer activity patterns. Sambar deer were found to be significantly more detectable near roads and in areas of sparse tree density and displayed strong crepuscular activity patterns. Control operations carried out along roads at dawn and dusk could be effective, at least in the short term. Likewise, aerial culling could be an effective control option for sambar deer populations in BBNP. This study highlights the utility of camera trap data to inform the application of control operations for cryptic invasive species.
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14
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Wang C, Liu L, Zhu H, Zhang L, Wang R, Zhang Z, Huang J, Zhang S, Jian F, Ning C, Zhang L. MicroRNA expression profile of HCT-8 cells in the early phase of Cryptosporidium parvum infection. BMC Genomics 2019; 20:37. [PMID: 30642246 PMCID: PMC6332841 DOI: 10.1186/s12864-018-5410-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 12/26/2018] [Indexed: 12/20/2022] Open
Abstract
Background Cryptosporidium parvum is an important zoonotic parasitic disease worldwide, but the molecular mechanisms of the host–parasite interaction are not fully understood. Noncoding microRNAs (miRNAs) are considered key regulators of parasitic diseases. Therefore, we used microarray, qPCR, and bioinformatic analyses to investigate the intestinal epithelial miRNA expression profile after Cryptosporidium parvum infection. Results Twenty miRNAs were differentially expressed after infection (four upregulated and 16 downregulated). Further analysis of the differentially expressed miRNAs revealed that many important cellular responses were triggered by Cryptosporidium parvum infection, including cell apoptosis and the inflammatory and immune responses. Conclusions This study demonstrates for the first time that the miRNA expression profile of human intestinal epithelium cells is altered by C. parvum infection. This dysregulation of miRNA expression may contribute to the regulation of host biological processes in response to C. parvum infection, including cell apoptosis and the immune responses. These results provide new insight into the regulatory mechanisms of host miRNAs during cryptosporidiosis, which may offer potential targets for future C. parvum control strategies. Electronic supplementary material The online version of this article (10.1186/s12864-018-5410-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Chenrong Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, People's Republic of China.,International Joint Research Laboratory for Zoonotic Diseases of Henan, Zhengzhou, 450002, People's Republic of China
| | - Limin Liu
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, People's Republic of China.,International Joint Research Laboratory for Zoonotic Diseases of Henan, Zhengzhou, 450002, People's Republic of China
| | - Huili Zhu
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, People's Republic of China
| | - Lu Zhang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, People's Republic of China.,International Joint Research Laboratory for Zoonotic Diseases of Henan, Zhengzhou, 450002, People's Republic of China
| | - Rongjun Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, People's Republic of China.,International Joint Research Laboratory for Zoonotic Diseases of Henan, Zhengzhou, 450002, People's Republic of China
| | - Zhenjie Zhang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, People's Republic of China.,International Joint Research Laboratory for Zoonotic Diseases of Henan, Zhengzhou, 450002, People's Republic of China
| | - Jianying Huang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, People's Republic of China.,International Joint Research Laboratory for Zoonotic Diseases of Henan, Zhengzhou, 450002, People's Republic of China
| | - Sumei Zhang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, People's Republic of China.,International Joint Research Laboratory for Zoonotic Diseases of Henan, Zhengzhou, 450002, People's Republic of China
| | - Fuchun Jian
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, People's Republic of China.,International Joint Research Laboratory for Zoonotic Diseases of Henan, Zhengzhou, 450002, People's Republic of China
| | - Changshen Ning
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, People's Republic of China.,International Joint Research Laboratory for Zoonotic Diseases of Henan, Zhengzhou, 450002, People's Republic of China
| | - Longxian Zhang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, People's Republic of China. .,International Joint Research Laboratory for Zoonotic Diseases of Henan, Zhengzhou, 450002, People's Republic of China.
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15
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Zahedi A, Gofton AW, Greay T, Monis P, Oskam C, Ball A, Bath A, Watkinson A, Robertson I, Ryan U. Profiling the diversity of Cryptosporidium species and genotypes in wastewater treatment plants in Australia using next generation sequencing. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 644:635-648. [PMID: 30743878 DOI: 10.1016/j.scitotenv.2018.07.024] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 07/02/2018] [Accepted: 07/02/2018] [Indexed: 06/09/2023]
Abstract
Wastewater recycling is an increasingly popular option in worldwide to reduce pressure on water supplies due to population growth and climate change. Cryptosporidium spp. are among the most common parasites found in wastewater and understanding the prevalence of human-infectious species is essential for accurate quantitative microbial risk assessment (QMRA) and cost-effective management of wastewater. The present study conducted next generation sequencing (NGS) to determine the prevalence and diversity of Cryptosporidium species in 730 raw influent samples from 25 Australian wastewater treatment plants (WWTPs) across three states: New South Wales (NSW), Queensland (QLD) and Western Australia (WA), between 2014 and 2015. All samples were screened for the presence of Cryptosporidium at the 18S rRNA (18S) locus using quantitative PCR (qPCR), oocyst numbers were determined directly from the qPCR data using DNA standards calibrated by droplet digital PCR, and positives were characterized using NGS of 18S amplicons. Positives were also screened using C. parvum and C. hominis specific qPCRs. The overall Cryptosporidium prevalence was 11.4% (83/730): 14.3% (3/21) in NSW; 10.8% (51/470) in QLD; and 12.1% (29/239) in WA. A total of 17 Cryptosporidium species and six genotypes were detected by NGS. In NSW, C. hominis and Cryptosporidium rat genotype III were the most prevalent species (9.5% each). In QLD, C. galli, C. muris and C. parvum were the three most prevalent species (7.7%, 5.7%, and 4.5%, respectively), while in WA, C. meleagridis was the most prevalent species (6.3%). The oocyst load/Litre ranged from 70 to 18,055 oocysts/L (overall mean of 3426 oocysts/L: 4746 oocysts/L in NSW; 3578 oocysts/L in QLD; and 3292 oocysts/L in WA). NGS-based profiling demonstrated that Cryptosporidium is prevalent in the raw influent across Australia and revealed a large diversity of Cryptosporidium species and genotypes, which indicates the potential contribution of livestock, wildlife and birds to wastewater contamination.
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Affiliation(s)
- Alireza Zahedi
- School of Veterinary and Life Sciences, Murdoch University, Perth, Australia
| | - Alexander W Gofton
- School of Veterinary and Life Sciences, Murdoch University, Perth, Australia
| | - Telleasha Greay
- School of Veterinary and Life Sciences, Murdoch University, Perth, Australia
| | - Paul Monis
- Australian Water Quality Centre, South Australian Water Corporation, Adelaide, Australia
| | - Charlotte Oskam
- School of Veterinary and Life Sciences, Murdoch University, Perth, Australia
| | | | | | - Andrew Watkinson
- Seqwater, Ipswich, Queensland, Australia; University of Queensland, St Lucia, Queensland, Australia
| | - Ian Robertson
- School of Veterinary and Life Sciences, Murdoch University, Perth, Australia; China-Australia Joint Research and Training Centre for Veterinary Epidemiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Una Ryan
- School of Veterinary and Life Sciences, Murdoch University, Perth, Australia.
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16
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Cripps JK, Pacioni C, Scroggie MP, Woolnough AP, Ramsey DSL. Introduced deer and their potential role in disease transmission to livestock in Australia. Mamm Rev 2018. [DOI: 10.1111/mam.12142] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jemma K. Cripps
- Department of Environment, Land, Water and Planning; Arthur Rylah Institute for Environmental Research; Heidelberg Vic. 3084 Australia
- School of BioSciences; University of Melbourne; Melbourne Vic. 3010 Australia
| | - Carlo Pacioni
- Department of Environment, Land, Water and Planning; Arthur Rylah Institute for Environmental Research; Heidelberg Vic. 3084 Australia
- School of BioSciences; University of Melbourne; Melbourne Vic. 3010 Australia
| | - Michael P. Scroggie
- Department of Environment, Land, Water and Planning; Arthur Rylah Institute for Environmental Research; Heidelberg Vic. 3084 Australia
- School of BioSciences; University of Melbourne; Melbourne Vic. 3010 Australia
| | - Andrew P. Woolnough
- Department of Economic Development, Jobs, Transport and Resources; 475 Mickleham Road Attwood Vic. 3049 Australia
| | - David S. L. Ramsey
- Department of Environment, Land, Water and Planning; Arthur Rylah Institute for Environmental Research; Heidelberg Vic. 3084 Australia
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17
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Swaffer B, Abbott H, King B, van der Linden L, Monis P. Understanding human infectious Cryptosporidium risk in drinking water supply catchments. WATER RESEARCH 2018; 138:282-292. [PMID: 29614456 DOI: 10.1016/j.watres.2018.03.063] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 03/21/2018] [Accepted: 03/26/2018] [Indexed: 05/22/2023]
Abstract
Treating drinking water appropriately depends, in part, on the robustness of source water quality risk assessments, however quantifying the proportion of infectious, human pathogenic Cryptosporidium oocysts remains a significant challenge. We analysed 962 source water samples across nine locations to profile the occurrence, rate and timing of infectious, human pathogenic Cryptosporidium in surface waters entering drinking water reservoirs during rainfall-runoff conditions. At the catchment level, average infectivity over the four-year study period reached 18%; however, most locations averaged <5%. The maximum recorded infectivity fraction within a single rainfall runoff event was 65.4%, and was dominated by C. parvum. Twenty-two Cryptosporidium species and genotypes were identified using PCR-based molecular techniques; the most common being C. parvum, detected in 23% of water samples. Associations between landuse and livestock stocking characteristics with Cryptosporidium were determined using a linear mixed-effects model. The concentration of pathogens in water were significantly influenced by flow and dominance of land-use by commercial grazing properties (as opposed to lifestyle properties) in the catchment (p < 0.01). Inclusion of measured infectivity and human pathogenicity data into a quantitative microbial risk assessment (QMRA) could reduce the source water treatment requirements by up to 2.67 log removal values, depending on the catchment, and demonstrated the potential benefit of collating such data for QMRAs.
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Affiliation(s)
- Brooke Swaffer
- South Australia Water Corporation, GPO Box 1751, Adelaide, South Australia, 5001, Australia.
| | - Hayley Abbott
- South Australia Water Corporation, GPO Box 1751, Adelaide, South Australia, 5001, Australia
| | - Brendon King
- South Australia Water Corporation, GPO Box 1751, Adelaide, South Australia, 5001, Australia
| | - Leon van der Linden
- South Australia Water Corporation, GPO Box 1751, Adelaide, South Australia, 5001, Australia
| | - Paul Monis
- South Australia Water Corporation, GPO Box 1751, Adelaide, South Australia, 5001, Australia
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18
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Zahedi A, Monis P, Gofton AW, Oskam CL, Ball A, Bath A, Bartkow M, Robertson I, Ryan U. Cryptosporidium species and subtypes in animals inhabiting drinking water catchments in three states across Australia. WATER RESEARCH 2018; 134:327-340. [PMID: 29438893 DOI: 10.1016/j.watres.2018.02.005] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 01/22/2018] [Accepted: 02/04/2018] [Indexed: 06/08/2023]
Abstract
As part of long-term monitoring of Cryptosporidium in water catchments serving Western Australia, New South Wales (Sydney) and Queensland, Australia, we characterised Cryptosporidium in a total of 5774 faecal samples from 17 known host species and 7 unknown bird samples, in 11 water catchment areas over a period of 30 months (July 2013 to December 2015). All samples were initially screened for Cryptosporidium spp. at the 18S rRNA locus using a quantitative PCR (qPCR). Positives samples were then typed by sequence analysis of an 825 bp fragment of the 18S gene and subtyped at the glycoprotein 60 (gp60) locus (832 bp). The overall prevalence of Cryptosporidium across the various hosts sampled was 18.3% (1054/5774; 95% CI, 17.3-19.3). Of these, 873 samples produced clean Sanger sequencing chromatograms, and the remaining 181 samples, which initially produced chromatograms suggesting the presence of multiple different sequences, were re-analysed by Next- Generation Sequencing (NGS) to resolve the presence of Cryptosporidium and the species composition of potential mixed infections. The overall prevalence of confirmed mixed infection was 1.7% (98/5774), and in the remaining 83 samples, NGS only detected one species of Cryptosporidium. Of the 17 Cryptosporidium species and four genotypes detected (Sanger sequencing combined with NGS), 13 are capable of infecting humans; C. parvum, C. hominis, C. ubiquitum, C. cuniculus, C. meleagridis, C. canis, C. felis, C. muris, C. suis, C. scrofarum, C. bovis, C. erinacei and C. fayeri. Oocyst numbers per gram of faeces (g-1) were also determined using qPCR, with medians varying from 6021-61,064 across the three states. The significant findings were the detection of C. hominis in cattle and kangaroo faeces and the high prevalence of C. parvum in cattle. In addition, two novel C. fayeri subtypes (IVaA11G3T1 and IVgA10G1T1R1) and one novel C. meleagridis subtype (IIIeA18G2R1) were identified. This is also the first report of C. erinacei in Australia. Future work to monitor the prevalence of Cryptosporidium species and subtypes in animals in these catchments is warranted.
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Affiliation(s)
- Alireza Zahedi
- School of Veterinary and Life Sciences, Murdoch University, Perth, Australia
| | - Paul Monis
- Australian Water Quality Centre, South Australian Water Corporation, Adelaide, Australia
| | - Alexander W Gofton
- School of Veterinary and Life Sciences, Murdoch University, Perth, Australia
| | - Charlotte L Oskam
- School of Veterinary and Life Sciences, Murdoch University, Perth, Australia
| | | | | | | | - Ian Robertson
- School of Veterinary and Life Sciences, Murdoch University, Perth, Australia; China-Australia Joint Research and Training Center for Veterinary Epidemiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Una Ryan
- School of Veterinary and Life Sciences, Murdoch University, Perth, Australia.
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19
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Ryan U, Zahedi A, Paparini A. Cryptosporidium in humans and animals-a one health approach to prophylaxis. Parasite Immunol 2017; 38:535-47. [PMID: 27454991 DOI: 10.1111/pim.12350] [Citation(s) in RCA: 158] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 07/05/2016] [Indexed: 01/13/2023]
Abstract
Cryptosporidium is a major cause of moderate-to-severe diarrhoea in humans worldwide, second only to rotavirus. Due to the wide host range and environmental persistence of this parasite, cryptosporidiosis can be zoonotic and associated with foodborne and waterborne outbreaks. Currently, 31 species are recognized as valid, and of these, Cryptosporidium hominis and Cryptosporidium parvum are responsible for the majority of infections in humans. The immune status of the host, both innate and adaptive immunity, has a major impact on the severity of the disease and its prognosis. Immunocompetent individuals typically experience self-limiting diarrhoea and transient gastroenteritis lasting up to 2 weeks and recover without treatment, suggesting an efficient host antiparasite immune response. Immunocompromised individuals can suffer from intractable diarrhoea, which can be fatal. Effective drug treatments and vaccines are not yet available. As a result of this, the close cooperation and interaction between veterinarians, health physicians, environmental managers and public health operators is essential to properly control this disease. This review focuses on a One Health approach to prophylaxis, including the importance of understanding transmission routes for zoonotic Cryptosporidium species, improved sanitation and better risk management, improved detection, diagnosis and treatment and the prospect of an effective anticryptosporidial vaccine.
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Affiliation(s)
- U Ryan
- School of Veterinary and Life Sciences, Murdoch University, Perth, WA, Australia.
| | - A Zahedi
- School of Veterinary and Life Sciences, Murdoch University, Perth, WA, Australia
| | - A Paparini
- School of Veterinary and Life Sciences, Murdoch University, Perth, WA, Australia
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20
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Wait LF, Fox S, Peck S, Power ML. Molecular characterization of Cryptosporidium and Giardia from the Tasmanian devil (Sarcophilus harrisii). PLoS One 2017; 12:e0174994. [PMID: 28423030 PMCID: PMC5397283 DOI: 10.1371/journal.pone.0174994] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 03/17/2017] [Indexed: 02/07/2023] Open
Abstract
The Tasmanian devil (Sarcophilus harrisii) is a carnivorous marsupial found only in the wild in Tasmania, Australia. Tasmanian devils are classified as endangered and are currently threatened by devil facial tumour disease, a lethal transmissible cancer that has decimated the wild population in Tasmania. To prevent extinction of Tasmanian devils, conservation management was implemented in 2003 under the Save the Tasmanian Devil Program. This study aimed to assess if conservation management was altering the interactions between Tasmanian devils and their parasites. Molecular tools were used to investigate the prevalence and diversity of two protozoan parasites, Cryptosporidium and Giardia, in Tasmanian devils. A comparison of parasite prevalence between wild and captive Tasmanian devils showed that both Cryptosporidium and Giardia were significantly more prevalent in wild devils (p < 0.05); Cryptosporidium was identified in 37.9% of wild devils but only 10.7% of captive devils, while Giardia was identified in 24.1% of wild devils but only 0.82% of captive devils. Molecular analysis identified the presence of novel genotypes of both Cryptosporidium and Giardia. The novel Cryptosporidium genotype was 98.1% similar at the 18S rDNA to Cryptosporidium varanii (syn. C. saurophilum) with additional samples identified as C. fayeri, C. muris, and C. galli. Two novel Giardia genotypes, TD genotype 1 and TD genotype 2, were similar to G. duodenalis from dogs (94.4%) and a Giardia assemblage A isolate from humans (86.9%). Giardia duodenalis BIV, a zoonotic genotype of Giardia, was also identified in a single captive Tasmanian devil. These findings suggest that conservation management may be altering host-parasite interactions in the Tasmanian devil, and the presence of G. duodenalis BIV in a captive devil points to possible human-devil parasite transmission.
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Affiliation(s)
- Liana F. Wait
- Department of Biological Sciences, Macquarie University, North Ryde, NSW, Australia
- * E-mail:
| | - Samantha Fox
- Save the Tasmanian Devil Program, The Department of Primary Industries, Parks, Water and Environment, Hobart, Tasmania, Australia
| | - Sarah Peck
- Save the Tasmanian Devil Program, The Department of Primary Industries, Parks, Water and Environment, Hobart, Tasmania, Australia
| | - Michelle L. Power
- Department of Biological Sciences, Macquarie University, North Ryde, NSW, Australia
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21
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Barbosa A, Reiss A, Jackson B, Warren K, Paparini A, Gillespie G, Stokeld D, Irwin P, Ryan U. Prevalence, genetic diversity and potential clinical impact of blood-borne and enteric protozoan parasites in native mammals from northern Australia. Vet Parasitol 2017; 238:94-105. [DOI: 10.1016/j.vetpar.2017.04.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 03/15/2017] [Accepted: 04/03/2017] [Indexed: 12/29/2022]
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22
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Ryan U, Lawler S, Reid S. Limiting swimming pool outbreaks of cryptosporidiosis - the roles of regulations, staff, patrons and research. JOURNAL OF WATER AND HEALTH 2017; 15:1-16. [PMID: 28151435 DOI: 10.2166/wh.2016.160] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Cryptosporidium is the leading cause of swimming pool outbreaks of gastroenteritis. Transmission occurs through the ingestion of oocysts that are passed in the faeces of an infected person or animal when an accidental faecal release event occurs. Cryptosporidium parasites present specific challenges for infection control as oocysts are highly resistant to chlorine levels used for pool disinfection, infected individuals can shed large numbers of oocysts, there is a long incubation period and shedding of oocysts occurs even after symptom resolution. The purposes of this review are to identify key barriers to limiting swimming pool-associated outbreaks of cryptosporidiosis and to outline needs for research and collaboration to advance co-ordinated management practices. We reviewed swimming pool-associated cryptosporidiosis outbreaks, disinfection teachniques, current regulations and the role of staff and patrons. Key barriers to limiting swimming pool-associated outbreaks of cryptosporidiosis are a lack of uniform national and international standards, poor adherence and understanding of regulations governing staff and patron behaviour, and low levels of public knowledge and awareness.
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Affiliation(s)
- Una Ryan
- School of Veterinary and Life Sciences, Murdoch University, Perth, Australia E-mail:
| | - Sheleigh Lawler
- The University of Queensland, School of Public Health, Herston, Queensland 4006, Australia
| | - Simon Reid
- The University of Queensland, School of Public Health, Herston, Queensland 4006, Australia
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Bamaiyi PH, Redhuan NEM. Prevalence and risk factors for cryptosporidiosis: a global, emerging, neglected zoonosis. ASIAN BIOMED 2017. [DOI: 10.5372/1905-7415.1004.493] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Abstract
Background
Cryptosporidiosis is a zoonotic disease caused by the important parasitic diarrheal agent Cryptosporidium spp. Cryptosporidiosis occurs in all classes of animals and man with a rapidly expanding host range and increased importance since the occurrence of human immunodeficiency virus/acquired immunodeficiency syndrome in man.
Objectives
To review the global picture of cryptosporidiosis in man and animals with emphasis on prevalence and risk factors.
Methods
Current relevant literature on cryptosporidiosis was reviewed.
Results
Cryptosporidiosis is widely distributed and the risk factors vary from one region to another with hygiene and immune status as important risk factors.
Conclusions
Cryptosporidium spp. associated mortality has not only been reported in immune-compromised patients, but also in immune-competent patients. Yet in many countries not much attention is paid to the control and prevention of this infection in animals and man. The neglect of this disease despite the serious threat it poses to animals, their husbandry, and humans, has led the World Health Organization to list it among globally neglected diseases. To control and prevent this infection more effort needs to be directed at controlling the risk factors of the infection in man and animals.
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Affiliation(s)
- Pwaveno Huladeino Bamaiyi
- Faculty of Veterinary Medicine , Universiti Malaysia Kelantan , Kelantan 16100 , Malaysia
- Department of Public Health , School of Allied Health Sciences , Kampala International University , Kampala Uganda
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24
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Diseases of the Alimentary Tract. Vet Med (Auckl) 2017. [PMCID: PMC7167529 DOI: 10.1016/b978-0-7020-5246-0.00007-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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25
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Zoonotic Cryptosporidium Species in Animals Inhabiting Sydney Water Catchments. PLoS One 2016; 11:e0168169. [PMID: 27973572 PMCID: PMC5156390 DOI: 10.1371/journal.pone.0168169] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 11/25/2016] [Indexed: 11/19/2022] Open
Abstract
Cryptosporidium is one of the most common zoonotic waterborne parasitic diseases worldwide and represents a major public health concern of water utilities in developed nations. As animals in catchments can shed human-infectious Cryptosporidium oocysts, determining the potential role of animals in dissemination of zoonotic Cryptosporidium to drinking water sources is crucial. In the present study, a total of 952 animal faecal samples from four dominant species (kangaroos, rabbits, cattle and sheep) inhabiting Sydney's drinking water catchments were screened for the presence of Cryptosporidium using a quantitative PCR (qPCR) and positives sequenced at multiple loci. Cryptosporidium species were detected in 3.6% (21/576) of kangaroos, 7.0% (10/142) of cattle, 2.3% (3/128) of sheep and 13.2% (14/106) of rabbit samples screened. Sequence analysis of a region of the 18S rRNA locus identified C. macropodum and C. hominis in 4 and 17 isolates from kangaroos respectively, C. hominis and C. parvum in 6 and 4 isolates respectively each from cattle, C. ubiquitum in 3 isolates from sheep and C. cuniculus in 14 isolates from rabbits. All the Cryptosporidium species identified were zoonotic species with the exception of C. macropodum. Subtyping using the 5' half of gp60 identified C. hominis IbA10G2 (n = 12) and IdA15G1 (n = 2) in kangaroo faecal samples; C. hominis IbA10G2 (n = 4) and C. parvum IIaA18G3R1 (n = 4) in cattle faecal samples, C. ubiquitum subtype XIIa (n = 1) in sheep and C. cuniculus VbA23 (n = 9) in rabbits. Additional analysis of a subset of samples using primers targeting conserved regions of the MIC1 gene and the 3' end of gp60 suggests that the C. hominis detected in these animals represent substantial variants that failed to amplify as expected. The significance of this finding requires further investigation but might be reflective of the ability of this C. hominis variant to infect animals. The finding of zoonotic Cryptosporidium species in these animals may have important implications for the management of drinking water catchments to minimize risk to public health.
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26
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Schiller SE, Webster KN, Power M. Detection of Cryptosporidium hominis and novel Cryptosporidium bat genotypes in wild and captive Pteropus hosts in Australia. INFECTION GENETICS AND EVOLUTION 2016; 44:254-260. [DOI: 10.1016/j.meegid.2016.07.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Revised: 07/01/2016] [Accepted: 07/03/2016] [Indexed: 11/17/2022]
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27
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Narayan EJ, Williams M. Understanding the dynamics of physiological impacts of environmental stressors on Australian marsupials, focus on the koala (Phascolarctos cinereus). BMC ZOOL 2016. [DOI: 10.1186/s40850-016-0004-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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28
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Zahedi A, Phasey J, Boland T, Ryan U. First report of Cryptosporidium species in farmed and wild buffalo from the Northern Territory, Australia. Parasitol Res 2016; 115:1349-53. [PMID: 26758449 DOI: 10.1007/s00436-016-4901-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 01/06/2016] [Indexed: 11/29/2022]
Abstract
A molecular epidemiological survey of Cryptosporidium from water buffalo (Bubalus bubalis) in the Northern Territory in Australia was conducted. Fecal samples were collected from adult farmed (n = 50) and wild buffalo (n = 50) and screened using an 18S quantitative PCR (qPCR). Positives were typed by sequence analysis of 18S nested PCR products. The qPCR prevalence of Cryptosporidium species in farmed and wild buffalo was 30 and 12 %, respectively. Sequence analysis identified two species: C. parvum and C. bovis, with C. parvum accounting for ~80 % of positives typed from the farmed buffalo fecal samples compared to 50 % for wild buffalo. Subtyping at the 60 kDa glycoprotein (gp60) locus identified C. parvum subtypes IIdA19G1 (n = 4) and IIdA15G1 (n = 1) in the farmed buffalo and IIaA18G3R1 (n = 2) in the wild buffalo. The presence of C. parvum, which commonly infects humans, suggests that water buffaloes may contribute to contamination of rivers and waterways with human infectious Cryptosporidium oocysts, and further research on the epidemiology of Cryptosporidium in buffalo populations in Australia is required.
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Affiliation(s)
- Alireza Zahedi
- School of Veterinary and Life Sciences, Murdoch University, Perth, Australia
| | - Jordan Phasey
- Indigenous Essential Services, Power and Water Corporation, Darwin, NT, Australia
| | - Tony Boland
- Tropical Water Solutions Pty. Ltd., Woolner, Australia
| | - Una Ryan
- School of Veterinary and Life Sciences, Murdoch University, Perth, Australia.
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29
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Public health significance of zoonotic Cryptosporidium species in wildlife: Critical insights into better drinking water management. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2015; 5:88-109. [PMID: 28560163 PMCID: PMC5439462 DOI: 10.1016/j.ijppaw.2015.12.001] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 12/01/2015] [Accepted: 12/02/2015] [Indexed: 11/22/2022]
Abstract
Cryptosporidium is an enteric parasite that is transmitted via the faecal-oral route, water and food. Humans, wildlife and domestic livestock all potentially contribute Cryptosporidium to surface waters. Human encroachment into natural ecosystems has led to an increase in interactions between humans, domestic animals and wildlife populations. Increasing numbers of zoonotic diseases and spill over/back of zoonotic pathogens is a consequence of this anthropogenic disturbance. Drinking water catchments and water reservoir areas have been at the front line of this conflict as they can be easily contaminated by zoonotic waterborne pathogens. Therefore, the epidemiology of zoonotic species of Cryptosporidium in free-ranging and captive wildlife is of increasing importance. This review focuses on zoonotic Cryptosporidium species reported in global wildlife populations to date, and highlights their significance for public health and the water industry.
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30
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Lal A, Fearnley E, Kirk M. The Risk of Reported Cryptosporidiosis in Children Aged <5 Years in Australia is Highest in Very Remote Regions. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2015; 12:11815-28. [PMID: 26393636 PMCID: PMC4586709 DOI: 10.3390/ijerph120911815] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 08/25/2015] [Accepted: 08/26/2015] [Indexed: 12/29/2022]
Abstract
The incidence of cryptosporidiosis is highest in children <5 years, yet little is known about disease patterns across urban and rural areas of Australia. In this study, we examine whether the risk of reported cryptosporidiosis in children <5 years varies across an urban-rural gradient, after controlling for season and gender. Using Australian data on reported cryptosporidiosis from 2001 to 2012, we spatially linked disease data to an index of geographic remoteness to examine the geographic variation in cryptosporidiosis risk using negative binomial regression. The Incidence Risk Ratio (IRR) of reported cryptosporidiosis was higher in inner regional (IRR 1.4 95% CI 1.2–1.7, p < 0.001), and outer regional areas (IRR 2.4 95% CI 2.2–2.9, p < 0.001), and in remote (IRR 5.2 95% CI 4.3–6.2, p < 0.001) and very remote (IRR 8.2 95% CI 6.9–9.8, p < 0.001) areas, compared to major cities. A linear test for trend showed a statistically significant trend with increasing remoteness. Remote communities need to be a priority for future targeted health promotion and disease prevention interventions to reduce cryptosporidiosis in children <5 years.
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Affiliation(s)
- Aparna Lal
- National Centre for Epidemiology and Population Health, Building 62, Australian National University, Acton, Canberra 2602, Australia.
| | - Emily Fearnley
- National Centre for Epidemiology and Population Health, Building 62, Australian National University, Acton, Canberra 2602, Australia.
| | - Martyn Kirk
- National Centre for Epidemiology and Population Health, Building 62, Australian National University, Acton, Canberra 2602, Australia.
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31
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Petterson S, Roser D, Deere D. Characterizing the concentration of Cryptosporidium in Australian surface waters for setting health-based targets for drinking water treatment. JOURNAL OF WATER AND HEALTH 2015; 13:879-896. [PMID: 26322774 DOI: 10.2166/wh.2015.282] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
It is proposed that the next revision of the Australian Drinking Water Guidelines will include 'health-based targets', where the required level of potable water treatment quantitatively relates to the magnitude of source water pathogen concentrations. To quantify likely Cryptosporidium concentrations in southern Australian surface source waters, the databases for 25 metropolitan water supplies with good historical records, representing a range of catchment sizes, land use and climatic regions were mined. The distributions and uncertainty intervals for Cryptosporidium concentrations were characterized for each site. Then, treatment targets were quantified applying the framework recommended in the World Health Organization Guidelines for Drinking-Water Quality 2011. Based on total oocyst concentrations, and not factoring in genotype or physiological state information as it relates to infectivity for humans, the best estimates of the required level of treatment, expressed as log10 reduction values, ranged among the study sites from 1.4 to 6.1 log10. Challenges associated with relying on historical monitoring data for defining drinking water treatment requirements were identified. In addition, the importance of quantitative microbial risk assessment input assumptions on the quantified treatment targets was investigated, highlighting the need for selection of locally appropriate values.
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Affiliation(s)
- S Petterson
- Water & Health Pty Ltd, PO Box 648, Salamander Bay, Sydney, NSW 2317, Australia and Department of Mathematical Sciences and Technology, Norwegian University of Life Sciences, Ås, Norway E-mail:
| | - D Roser
- Water Research Centre, School of Civil and Environmental Engineering, University of NSW, Sydney, NSW, Australia
| | - D Deere
- Water Futures Pty Ltd, Sydney, NSW, Australia
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32
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Certad G, Dupouy-Camet J, Gantois N, Hammouma-Ghelboun O, Pottier M, Guyot K, Benamrouz S, Osman M, Delaire B, Creusy C, Viscogliosi E, Dei-Cas E, Aliouat-Denis CM, Follet J. Identification of Cryptosporidium Species in Fish from Lake Geneva (Lac Léman) in France. PLoS One 2015. [PMID: 26213992 PMCID: PMC4516323 DOI: 10.1371/journal.pone.0133047] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Cryptosporidium, a protozoan parasite that can cause severe diarrhea in a wide range of vertebrates including humans, is increasingly recognized as a parasite of a diverse range of wildlife species. However, little data are available regarding the identification of Cryptosporidium species and genotypes in wild aquatic environments, and more particularly in edible freshwater fish. To evaluate the prevalence of Cryptosporidiumspp. in fish from Lake Geneva (Lac Léman) in France, 41 entire fish and 100 fillets (cuts of fish flesh) were collected from fishery suppliers around the lake. Nested PCR using degenerate primers followed by sequence analysis was used. Five fish species were identified as potential hosts of Cryptosporidium: Salvelinus alpinus, Esox lucius, Coregonus lavaretus, Perca fluviatilis, and Rutilus rutilus. The presence of Cryptosporidium spp. was found in 15 out of 41 fish (37%), distributed as follows: 13 (87%) C. parvum, 1 (7%) C. molnari, and 1 (7%) mixed infection (C. parvum and C. molnari). C. molnari was identified in the stomach, while C. parvum was found in the stomach and intestine. C. molnari was also detected in 1 out of 100 analyzed fillets. In order to identify Cryptosporidium subtypes, sequencing of the highly polymorphic 60-kDa glycoprotein (gp60) was performed. Among the C. parvum positive samples, three gp60 subtypes were identified: IIaA15G2R1, IIaA16G2R1, and IIaA17G2R1. Histological examination confirmed the presence of potential developmental stages of C. parvum within digestive epithelial cells. These observations suggest that C. parvum is infecting fish, rather than being passively carried. Since C. parvum is a zoonotic species, fish potentially contaminated by the same subtypes found in terrestrial mammals would be an additional source of infection for humans and animals, and may also contribute to the contamination of the environment with this parasite. Moreover, the risk of human transmission is strengthened by the observation of edible fillet contamination.
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Affiliation(s)
- Gabriela Certad
- Biologie et Diversité des Pathogènes Eucaryotes Emergents (BDEEP), Centre d'Infection et d'Immunité de Lille (CIIL), Institut Pasteur de Lille, INSERM U1019, CNRS UMR 8402, Université de Lille, Lille, France
| | - Jean Dupouy-Camet
- Université Paris Descartes, Assistance Publique Hôpitaux de Paris, Parasitologie-Mycologie, Hôpital Cochin, Paris, France
| | - Nausicaa Gantois
- Biologie et Diversité des Pathogènes Eucaryotes Emergents (BDEEP), Centre d'Infection et d'Immunité de Lille (CIIL), Institut Pasteur de Lille, INSERM U1019, CNRS UMR 8402, Université de Lille, Lille, France
| | - Ourida Hammouma-Ghelboun
- Laboratoire de Biotechnologie et Gestion des Agents Pathogènes en Agriculture, Institut Supérieur d'Agriculture de Lille, Lille, France
| | - Muriel Pottier
- Faculté de Pharmacie, Université de Lille, Lille, France
| | - Karine Guyot
- Biologie et Diversité des Pathogènes Eucaryotes Emergents (BDEEP), Centre d'Infection et d'Immunité de Lille (CIIL), Institut Pasteur de Lille, INSERM U1019, CNRS UMR 8402, Université de Lille, Lille, France
| | - Sadia Benamrouz
- Biologie et Diversité des Pathogènes Eucaryotes Emergents (BDEEP), Centre d'Infection et d'Immunité de Lille (CIIL), Institut Pasteur de Lille, INSERM U1019, CNRS UMR 8402, Université de Lille, Lille, France; Ecologie et Biodiversité, Faculté Libre des Sciences et Technologies de Lille, Université Catholique de Lille, Lille, France
| | - Marwan Osman
- Biologie et Diversité des Pathogènes Eucaryotes Emergents (BDEEP), Centre d'Infection et d'Immunité de Lille (CIIL), Institut Pasteur de Lille, INSERM U1019, CNRS UMR 8402, Université de Lille, Lille, France; Laboratoire Microbiologie, Santé et Environnement, Centre AZM pour la Recherche en Biotechnologie et ses Applications, Université Libanaise, Tripoli, Lebanon
| | - Baptiste Delaire
- Service d'Anatomie et de Cytologie Pathologiques, Groupe Hospitalier de l'Université Catholique de Lille, Lille, France
| | - Colette Creusy
- Service d'Anatomie et de Cytologie Pathologiques, Groupe Hospitalier de l'Université Catholique de Lille, Lille, France
| | - Eric Viscogliosi
- Biologie et Diversité des Pathogènes Eucaryotes Emergents (BDEEP), Centre d'Infection et d'Immunité de Lille (CIIL), Institut Pasteur de Lille, INSERM U1019, CNRS UMR 8402, Université de Lille, Lille, France
| | - Eduardo Dei-Cas
- Biologie et Diversité des Pathogènes Eucaryotes Emergents (BDEEP), Centre d'Infection et d'Immunité de Lille (CIIL), Institut Pasteur de Lille, INSERM U1019, CNRS UMR 8402, Université de Lille, Lille, France; Centre Hospitalier Régional et Universitaire de Lille, Université Lille Nord de France, Lille, France
| | - Cecile Marie Aliouat-Denis
- Biologie et Diversité des Pathogènes Eucaryotes Emergents (BDEEP), Centre d'Infection et d'Immunité de Lille (CIIL), Institut Pasteur de Lille, INSERM U1019, CNRS UMR 8402, Université de Lille, Lille, France; Faculté de Pharmacie, Université de Lille, Lille, France
| | - Jérôme Follet
- Laboratoire de Biotechnologie et Gestion des Agents Pathogènes en Agriculture, Institut Supérieur d'Agriculture de Lille, Lille, France; Laboratoire BioMEMS, Univ.Lille, CNRS, ISEN, Univ.Valenciennes, UMR 8520, IEMN, Institut d'Electronique de Microélectronique et de Nanotechnologie, F 59 000, Lille, France
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Al Mawly J, Grinberg A, Velathanthiri N, French N. Cross sectional study of prevalence, genetic diversity and zoonotic potential of Cryptosporidium parvum cycling in New Zealand dairy farms. Parasit Vectors 2015; 8:240. [PMID: 25896433 PMCID: PMC4423479 DOI: 10.1186/s13071-015-0855-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 04/13/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The estimation of the prevalence and zoonotic potential of Cryptosporidium parvum cycling in bovine populations requires the use of genotyping, as several morphologically similar non-parvum genetic variants of unproven clinical and public health impact are found in cattle. However, robust C. parvum prevalence estimates in cattle are lacking and comparative data of bovine and human isolates collected from the same regions are scarce. Thus, the relative contribution of the C. parvum oocysts released by farmed animals to animal and human cryptosporidiosis burden is, in general, poorly understood. METHODS The New Zealand farm-level C. parvum prevalence was estimated using a cross-sectional sample of 1283 faecal specimens collected from newborn calves on 97 dairy farms. Faeces were analysed by immunofluorescence and the Cryptosporidium parasites were genetically identified. Finally, bovine C. parvum were genetically compared with historical human clinical isolates using a bilocus subtyping scheme. RESULTS Immunofluoresence-positive faeces were found in 63/97 (65%) farms. C. parvum was identified in 49 (50.5%) farms, C. bovis in 6 (6.1%) farms, and on 8 (8.2%) farms the species could not be identified. The dominant C. parvum genetic variants were geographically widespread and found in both host populations, but several variants were found in humans only. CONCLUSIONS Phenotypic tests offered by New Zealand veterinary diagnostic laboratories for the diagnosis of C. parvum may have moderate to high positive predictive values for this species. The genetic similarities observed between the human and bovine parasites support a model considering calves as significant amplifiers of zoonotic C. parvum in New Zealand. However, data suggest that transmission routes not associated with dairy cattle should also be taken into account in future source-attribution studies of human cryptosporidiosis.
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Affiliation(s)
- Julanda Al Mawly
- mEpiLab, Hopkirk Research Institute, Massey University, Palmerston North, New Zealand.
| | - Alex Grinberg
- Infectious Diseases Group, Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11-222, Palmerston North, New Zealand.
| | - Niluka Velathanthiri
- Infectious Diseases Group, Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11-222, Palmerston North, New Zealand.
| | - Nigel French
- mEpiLab, Hopkirk Research Institute, Massey University, Palmerston North, New Zealand.
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Abeywardena H, Jex AR, Gasser RB. A perspective on Cryptosporidium and Giardia, with an emphasis on bovines and recent epidemiological findings. ADVANCES IN PARASITOLOGY 2015; 88:243-301. [PMID: 25911369 PMCID: PMC7103119 DOI: 10.1016/bs.apar.2015.02.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Cryptosporidium and Giardia are two common aetiological agents of infectious enteritis in humans and animals worldwide. These parasitic protists are usually transmitted by the faecal-oral route, following the ingestion of infective stages (oocysts or cysts). An essential component of the control of these parasitic infections, from a public health perspective, is an understanding of the sources and routes of transmission in different geographical regions. Bovines are considered potential sources of infection for humans, because species and genotypes of Cryptosporidium and Giardia infecting humans have also been isolated from cattle in molecular parasitological studies. However, species and genotypes of Cryptosporidium and Giardia of bovids, and the extent of zoonotic transmission in different geographical regions in the world, are still relatively poorly understood. The purpose of this article is to (1) provide a brief background on Cryptosporidium and Giardia, (2) review some key aspects of the molecular epidemiology of cryptosporidiosis and giardiasis in animals, with an emphasis on bovines, (3) summarize research of Cryptosporidium and Giardia from cattle and water buffaloes in parts of Australasia and Sri Lanka, considering public health aspects and (4) provide a perspective on future avenues of study. Recent studies reinforce that bovines harbour Cryptosporidium and Giardia that likely pose a human health risk and highlight the need for future investigations of the biology, population genetics and transmission dynamics of Cryptosporidium and Giardia in cattle, water buffaloes and other ruminants in different geographical regions, the fate and transport of infective stages following their release into the environment, as well as for improved strategies for the control and prevention of cryptosporidiosis and giardiasis, guided by molecular epidemiological studies.
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Affiliation(s)
- Harshanie Abeywardena
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Aaron R. Jex
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Robin B. Gasser
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria, Australia
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Vermeulen ET, Ashworth DL, Eldridge MD, Power ML. Diversity of Cryptosporidium in brush-tailed rock-wallabies (Petrogale penicillata) managed within a species recovery programme. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2015; 4:190-6. [PMID: 25834789 PMCID: PMC4372656 DOI: 10.1016/j.ijppaw.2015.02.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2014] [Revised: 02/11/2015] [Accepted: 02/13/2015] [Indexed: 11/19/2022]
Abstract
Cryptosporidium diversity was investigated in a BTRW as part of a recovery programme. Faecal samples from captive bred, supplemented and wild wallabies were screened. Cryptosporidium isolates were identified at three gene loci using PCR. Diverse species of Cryptosporidium were identified across populations. Both specific, C. fayeri, and broad host species, C. meleagridis, were identified.
Host–parasite relationships are likely to be impacted by conservation management practices, potentially increasing the susceptibility of wildlife to emerging disease. Cryptosporidium, a parasitic protozoan genus comprising host-adapted and host-specific species, was used as an indicator of parasite movement between populations of a threatened marsupial, the brush-tailed rock-wallaby (Petrogale penicillata). PCR screening of faecal samples (n = 324) from seven wallaby populations across New South Wales, identified Cryptosporidium in 7.1% of samples. The sampled populations were characterised as captive, supplemented and wild populations. No significant difference was found in Cryptosporidium detection between each of the three population categories. The positive samples, detected using 18S rRNA screening, were amplified using the actin and gp60 loci. Multi-locus sequence analysis revealed the presence of Cryptosporidium fayeri, a marsupial-specific species, and C. meleagridis, which has a broad host range, in samples from the three population categories. Cryptosporidium meleagridis has not been previously reported in marsupials and hence the pathogenicity of this species to brush-tailed rock-wallabies is unknown. Based on these findings, we recommend further study into Cryptosporidium in animals undergoing conservation management, as well as surveying wild animals in release areas, to further understand the diversity and epidemiology of this parasite in threatened wildlife.
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Affiliation(s)
- Elke T. Vermeulen
- Department of Biological Sciences, Macquarie University, North Ryde, NSW, 2109, Australia
- Corresponding author. Department of Biological Sciences, Macquarie University, North Ryde, NSW 2109, Australia. Tel.: +61 2 9850 9259; fax: +61 2 9850 8245.
| | - Deborah L. Ashworth
- Office of Environment and Heritage, PO Box 1967, Hurstville, NSW 2220, Australia
| | - Mark D.B. Eldridge
- Department of Biological Sciences, Macquarie University, North Ryde, NSW, 2109, Australia
- Australian Museum Research Institute, Australian Museum, 6 College Street, Sydney, NSW 2010, Australia
| | - Michelle L. Power
- Department of Biological Sciences, Macquarie University, North Ryde, NSW, 2109, Australia
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36
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Swaffer BA, Vial HM, King BJ, Daly R, Frizenschaf J, Monis PT. Investigating source water Cryptosporidium concentration, species and infectivity rates during rainfall-runoff in a multi-use catchment. WATER RESEARCH 2014; 67:310-320. [PMID: 25306487 DOI: 10.1016/j.watres.2014.08.055] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 08/21/2014] [Accepted: 08/29/2014] [Indexed: 06/04/2023]
Abstract
Protozoan pathogens present a significant human health concern, and prevention of contamination into potable networks remains a key focus for drinking water providers. Here, we monitored the change in Cryptosporidium concentration in source water during high flow events in a multi-use catchment. Furthermore, we investigated the diversity of Cryptosporidium species/genotypes present in the source water, and delivered an oocyst infectivity fraction. There was a positive and significant correlation between Cryptosporidium concentration and flow (ρ = 0.756) and turbidity (ρ = 0.631) for all rainfall-runoff events, despite variable source water pathogen concentrations. Cell culture assays measured oocyst infectivity and suggested an overall source water infectious fraction of 3.1%. No infectious Cryptosporidium parvum or Cryptosporidium hominis were detected, although molecular testing detected C. parvum in 7% of the samples analysed using PCR-based molecular techniques. Twelve Cryptosporidium species/genotypes were identified using molecular techniques, and were reflective of the host animals typically found in remnant vegetation and agricultural areas. The inclusion of molecular approaches to identify Cryptosporidium species and genotypes highlighted the diversity of pathogens in water, which originated from various sources across the catchment. We suggest this mixing of runoff water from a range of landuses containing diverse Cryptosporidium hosts is a key explanation for the often-cited difficulty forming strong pathogen-indicator relationships.
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Affiliation(s)
- Brooke A Swaffer
- South Australia Water Corporation, GPO Box 1751, Adelaide, SA 5001, Australia.
| | - Hayley M Vial
- South Australia Water Corporation, GPO Box 1751, Adelaide, SA 5001, Australia
| | - Brendon J King
- Australian Water Quality Centre, GPO Box 1751, Adelaide, SA 5001, Australia
| | - Robert Daly
- South Australia Water Corporation, GPO Box 1751, Adelaide, SA 5001, Australia
| | | | - Paul T Monis
- Australian Water Quality Centre, GPO Box 1751, Adelaide, SA 5001, Australia
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Liu X, Zhou X, Zhong Z, Zuo Z, Shi J, Wang Y, Qing B, Peng G. Occurrence of novel and rare subtype families of Cryptosporidium in bamboo rats (Rhizomys sinensis) in China. Vet Parasitol 2014; 207:144-8. [PMID: 25499825 DOI: 10.1016/j.vetpar.2014.11.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 11/04/2014] [Accepted: 11/09/2014] [Indexed: 11/28/2022]
Abstract
This report is the first to describe Cryptosporidium infection in bamboo rats (Rhizomys sinensis). Ninety-two fresh fecal specimens were collected from a pet market in Ya'an City, China. One Cryptosporidium isolate from an asymptomatic host and two isolates from separate hosts with diarrhea were obtained by using Sheather's sucrose flotation technique and modified acid-fast staining. The Cryptosporidium spp. were genotyped by nested PCR and nucleotide sequencing of the small subunit rRNA (SSU rRNA), 70-kDa heat shock protein (HSP70), oocyst wall protein (COWP), and actin genes: isolates were identified as Cryptosporidium parvum with minor nucleotide differences at all four loci. Further subtyping was performed by PCR amplification and DNA sequence analysis of the 60-kDa glycoprotein (gp60) gene: two subtype families were detected, including a novel C. parvum subtype IIpA9 and a rare subtype IIoA13G1 (only reported in diarrheal patients of Sweden). Our results suggest that the bamboo rat is a reservoir host of C. parvum. Significantly, we discovered that the rare C. parvum subtype family IIo is also a zoonotic subtype and confirmed C. parvum subtype IIpA9 as a novel subtype family.
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Affiliation(s)
- Xuehan Liu
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya(')an 625014, PR China
| | - Xiaoxiao Zhou
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya(')an 625014, PR China
| | - Zhijun Zhong
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya(')an 625014, PR China
| | - Zhicai Zuo
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya(')an 625014, PR China
| | - Jinjiang Shi
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya(')an 625014, PR China
| | - Yingzhu Wang
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya(')an 625014, PR China
| | - Baichun Qing
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya(')an 625014, PR China
| | - Guangneng Peng
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya(')an 625014, PR China.
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38
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Cryptosporidiumspecies in humans and animals: current understanding and research needs. Parasitology 2014; 141:1667-85. [DOI: 10.1017/s0031182014001085] [Citation(s) in RCA: 402] [Impact Index Per Article: 40.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
SUMMARYCryptosporidiumis increasingly recognized as one of the major causes of moderate to severe diarrhoea in developing countries. With treatment options limited, control relies on knowledge of the biology and transmission of the members of the genus responsible for disease. Currently, 26 species are recognized as valid on the basis of morphological, biological and molecular data. Of the nearly 20Cryptosporidiumspecies and genotypes that have been reported in humans,Cryptosporidium hominisandCryptosporidium parvumare responsible for the majority of infections. Livestock, particularly cattle, are one of the most important reservoirs of zoonotic infections. Domesticated and wild animals can each be infected with severalCryptosporidiumspecies or genotypes that have only a narrow host range and therefore have no major public health significance. Recent advances in next-generation sequencing techniques will significantly improve our understanding of the taxonomy and transmission ofCryptosporidiumspecies, and the investigation of outbreaks and monitoring of emerging and virulent subtypes. Important research gaps remain including a lack of subtyping tools for manyCryptosporidiumspecies of public and veterinary health importance, and poor understanding of the genetic determinants of host specificity ofCryptosporidiumspecies and impact of climate change on the transmission ofCryptosporidium.
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39
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Infections with multiple Cryptosporidium species and new genetic variants in young dairy calves on a farm located within a drinking water catchment area in New Zealand. Vet Parasitol 2014; 202:287-91. [DOI: 10.1016/j.vetpar.2014.03.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 03/23/2014] [Accepted: 03/31/2014] [Indexed: 11/20/2022]
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40
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Longitudinal prevalence, oocyst shedding and molecular characterisation of Cryptosporidium species in sheep across four states in Australia. Vet Parasitol 2014; 200:50-8. [DOI: 10.1016/j.vetpar.2013.11.014] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Revised: 11/18/2013] [Accepted: 11/18/2013] [Indexed: 11/21/2022]
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41
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Kváč M, Hofmannová L, Hlásková L, Květoňová D, Vítovec J, McEvoy J, Sak B. Cryptosporidium erinacei n. sp. (Apicomplexa: Cryptosporidiidae) in hedgehogs. Vet Parasitol 2014; 201:9-17. [PMID: 24529828 DOI: 10.1016/j.vetpar.2014.01.014] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 01/11/2014] [Accepted: 01/19/2014] [Indexed: 11/15/2022]
Abstract
The morphological, biological, and molecular characteristics of Cryptosporidium hedgehog genotype are described, and the species name Cryptosporidium erinacei n. sp. is proposed to reflect its specificity for hedgehogs under natural and experimental conditions. Oocysts of C. erinacei are morphologically indistinguishable from Cryptosporidium parvum, measuring 4.5-5.8 μm (mean=4.9 μm) × 4.0-4.8 μm (mean=4.4 μm) with a length to width ratio of 1.13 (1.02-1.35) (n=100). Oocysts of C. erinacei obtained from a naturally infected European hedgehog (Erinaceus europaeus) were infectious for naïve 8-week-old four-toed hedgehogs (Atelerix albiventris); the prepatent period was 4-5 days post infection (DPI) and the patent period was longer than 20 days. C. erinacei was not infectious for 8-week-old SCID and BALB/c mice (Mus musculus), Mongolian gerbils (Meriones unguiculatus), or golden hamsters (Mesocricetus auratus). Phylogenetic analyses based on small subunit rRNA, 60 kDa glycoprotein, actin, Cryptosporidium oocyst wall protein, thrombospondin-related adhesive protein of Cryptosporidium-1, and heat shock protein 70 gene sequences revealed that C. erinacei is genetically distinct from previously described Cryptosporidium species.
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Affiliation(s)
- Martin Kváč
- Institute of Parasitology, Biology Centre of the Academy of Sciences of the Czech Republic, v.v.i., České Budějovice, Czech Republic; Faculty of Agriculture, University of South Bohemia in České Budějovice, Czech Republic.
| | - Lada Hofmannová
- Department of Pathology and Parasitology, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic; CEITEC - VFU, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Lenka Hlásková
- Institute of Parasitology, Biology Centre of the Academy of Sciences of the Czech Republic, v.v.i., České Budějovice, Czech Republic
| | - Dana Květoňová
- Institute of Parasitology, Biology Centre of the Academy of Sciences of the Czech Republic, v.v.i., České Budějovice, Czech Republic
| | - Jiří Vítovec
- Faculty of Agriculture, University of South Bohemia in České Budějovice, Czech Republic
| | - John McEvoy
- Veterinary and Microbiological Sciences Department, North Dakota State University, Fargo, USA
| | - Bohumil Sak
- Institute of Parasitology, Biology Centre of the Academy of Sciences of the Czech Republic, v.v.i., České Budějovice, Czech Republic
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García-Presedo I, Pedraza-Díaz S, González-Warleta M, Mezo M, Gómez-Bautista M, Ortega-Mora LM, Castro-Hermida JA. The first report of Cryptosporidium bovis, C. ryanae and Giardia duodenalis sub-assemblage A-II in roe deer (Capreolus capreolus) in Spain. Vet Parasitol 2013; 197:658-64. [DOI: 10.1016/j.vetpar.2013.07.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 07/01/2013] [Accepted: 07/02/2013] [Indexed: 02/08/2023]
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Webber MA, Sari I, Hoefel D, Monis PT, King BJ. PCR Slippage Across the ML-2 Microsatellite of theCryptosporidiumMIC1 Locus Enables Development of a PCR Assay Capable of Distinguishing the ZoonoticCryptosporidium parvumFrom Other Human InfectiousCryptosporidiumSpecies. Zoonoses Public Health 2013; 61:324-37. [DOI: 10.1111/zph.12074] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Indexed: 12/01/2022]
Affiliation(s)
- M. A. Webber
- Department of Medical Biotechnology; School of Medicine; Flinders University; Bedford Park SA Australia
| | - I. Sari
- School of Pharmacy and Medical Sciences; University of South Australia; Adelaide SA Australia
| | - D. Hoefel
- Australian Water Quality Centre; South Australian Water Corporation; Adelaide SA Australia
| | - P. T. Monis
- Department of Medical Biotechnology; School of Medicine; Flinders University; Bedford Park SA Australia
- School of Pharmacy and Medical Sciences; University of South Australia; Adelaide SA Australia
- Australian Water Quality Centre; South Australian Water Corporation; Adelaide SA Australia
| | - B. J. King
- Department of Medical Biotechnology; School of Medicine; Flinders University; Bedford Park SA Australia
- Australian Water Quality Centre; South Australian Water Corporation; Adelaide SA Australia
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Human cryptosporidiosis diagnosed in Western Australia: a mixed infection with Cryptosporidium meleagridis, the Cryptosporidium mink genotype, and an unknown Cryptosporidium species. J Clin Microbiol 2013; 51:2463-5. [PMID: 23637295 DOI: 10.1128/jcm.00424-13] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
This report describes a case of cryptosporidiosis from an immunocompetent patient from Perth, Western Australia, suffering from diarrhea and a spectrum of other symptoms. Molecular identification revealed that this patient was infected with three Cryptosporidium species-Cryptosporidium meleagridis, the Cryptosporidium mink genotype, and an unknown Cryptosporidium species.
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45
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Chalmers RM, Katzer F. Looking for Cryptosporidium: the application of advances in detection and diagnosis. Trends Parasitol 2013; 29:237-51. [PMID: 23566713 PMCID: PMC7106352 DOI: 10.1016/j.pt.2013.03.001] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 02/27/2013] [Accepted: 03/01/2013] [Indexed: 01/18/2023]
Abstract
The protozoan Cryptosporidium is a major public and animal health concern. Young children, immunocompromised people, and pre-weaning animals are especially vulnerable, but treatment options are limited and there is no vaccine. A laboratory diagnosis is required to confirm cases of cryptosporidiosis, and species and genotype determination is essential in distinguishing human from non-human sources, understanding transmission, and strengthening the epidemiological evidence for causative links in outbreaks. However, testing is not consistent, as demonstrated by investigation of a significant increase in cases in some European countries during 2012. Many methods employed are laborious and time-consuming; recent advances, translated into diagnostic assays, can improve testing and facilitate typing to support clinical and environmental investigations.
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Affiliation(s)
- Rachel M Chalmers
- Cryptosporidium Reference Unit, Public Health Wales Microbiology, Singleton Hospital, Swansea, UK.
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Presence of Cryptosporidium scrofarum, C. suis and C. parvum subtypes IIaA16G2R1 and IIaA13G1R1 in Eurasian wild boars (Sus scrofa). Vet Parasitol 2013; 196:497-502. [PMID: 23643454 DOI: 10.1016/j.vetpar.2013.04.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Revised: 04/04/2013] [Accepted: 04/10/2013] [Indexed: 11/24/2022]
Abstract
The aim of the present study was to identify the species of Cryptosporidium infecting Eurasian wild boars (Sus scrofa) in Galicia (NW, Spain). A sampling of 209 wild boars shot in different game preserves was carried out during the hunting season in 2009-2010. All samples were examined for Cryptosporidium infection, using both immunological and molecular tools. Cryptosporidium oocysts in faecal samples were identified using a direct immunofluorescence technique with monoclonal antibodies (DFA). The presence of Cryptosporidium DNA was determined using nested PCR involving amplification of a fragment of the small-subunit (SSU) ribosomal RNA gene (SSU rRNA). A total of 35 (16.7%) samples tested positive with both techniques. However, sequencing was only possible in 27 samples. Cryptosporidium scrofarum, Cryptosporidium suis and Cryptosporidium parvum oocysts were identified in 19, 5 and 3 of the samples, respectively. Moreover, C. scrofarum was detected as a dominant species infecting all age groups (juveniles, sub adults and adults). Sequence analyses of the glycoprotein (GP60) gene revealed the presence of C. parvum subtypes IIaA16G2R1 in 2 juveniles and IIaA13G1R1 in 1 sub adult wild boar. These species and subtypes have previously been described in human patients, indicating that isolates from asymptomatic wild boars might have zoonotic potential. This is the first report of the presence of C. scrofarum, C. suis and C. parvum subtypes IIaA16G2R1 and IIaA13G1R1 in wild boars (S. scrofa) in Spain.
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