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Meng X, Chu W, Tang Y, Wang W, Chen Y, Li N, Feng Y, Xiao L, Guo Y. High zoonotic potential and heavy environmental burden of Cryptosporidium spp. and Enterocytozoon bieneusi in farmed and pet African pygmy hedgehogs (Atelerix albiventris). One Health 2023. [DOI: 10.1016/j.onehlt.2023.100532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023] Open
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Larsen TG, Kähler J, Lebbad M, Aftab H, Müller L, Ethelberg S, Xiao L, Stensvold CR. First human infection with Cryptosporidium erinacei XIIIb - a case report from Denmark. Travel Med Infect Dis 2023; 52:102552. [PMID: 36746266 DOI: 10.1016/j.tmaid.2023.102552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 02/03/2023] [Indexed: 02/08/2023]
Affiliation(s)
- Tine Graakjær Larsen
- Department of Infectious Disease Epidemiology and Prevention, Statens Serum Institut, Copenhagen, Denmark.
| | - Jonas Kähler
- Division of Infectious Disease Preparedness, Statens Serum Institut, Copenhagen, Denmark
| | - Marianne Lebbad
- Sjöbjörnsvägen, Stockholm, Sweden; Formerly at the Department of Microbiology, Public Health Agency of Sweden, Solna, Sweden
| | - Huma Aftab
- The Regional Department of Clinical Microbiology, Zealand University Hospital, Koege, Region Zealand, Denmark
| | - Luise Müller
- Department of Infectious Disease Epidemiology and Prevention, Statens Serum Institut, Copenhagen, Denmark
| | - Steen Ethelberg
- Department of Infectious Disease Epidemiology and Prevention, Statens Serum Institut, Copenhagen, Denmark; Department of Public Health, Global Health Section, University of Copenhagen, Copenhagen, Denmark
| | - Lihua Xiao
- Guangdong Laboratory for Lingnan Modern Agriculture, Center for Emerging and Zoonotic Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
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Ryan U, Zahedi A, Feng Y, Xiao L. An Update on Zoonotic Cryptosporidium Species and Genotypes in Humans. Animals (Basel) 2021; 11:3307. [PMID: 34828043 PMCID: PMC8614385 DOI: 10.3390/ani11113307] [Citation(s) in RCA: 75] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/12/2021] [Accepted: 11/16/2021] [Indexed: 12/14/2022] Open
Abstract
The enteric parasite, Cryptosporidium is a major cause of diarrhoeal illness in humans and animals worldwide. No effective therapeutics or vaccines are available and therefore control is dependent on understanding transmission dynamics. The development of molecular detection and typing tools has resulted in the identification of a large number of cryptic species and genotypes and facilitated our understanding of their potential for zoonotic transmission. Of the 44 recognised Cryptosporidium species and >120 genotypes, 19 species, and four genotypes have been reported in humans with C. hominis, C. parvum, C. meleagridis, C. canis and C. felis being the most prevalent. The development of typing tools that are still lacking some zoonotic species and genotypes and more extensive molecular epidemiological studies in countries where the potential for transmission is highest are required to further our understanding of this important zoonotic pathogen. Similarly, whole-genome sequencing (WGS) and amplicon next-generation sequencing (NGS) are important for more accurately tracking transmission and understanding the mechanisms behind host specificity.
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Affiliation(s)
- Una Ryan
- Harry Butler Institute, Murdoch University, Perth, WA 6152, Australia;
| | - Alireza Zahedi
- Harry Butler Institute, Murdoch University, Perth, WA 6152, Australia;
| | - Yaoyu Feng
- Center for Emerging and Zoonotic Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (Y.F.); (L.X.)
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Lihua Xiao
- Center for Emerging and Zoonotic Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (Y.F.); (L.X.)
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
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Ryan UM, Feng Y, Fayer R, Xiao L. Taxonomy and molecular epidemiology of Cryptosporidium and Giardia - a 50 year perspective (1971-2021). Int J Parasitol 2021; 51:1099-1119. [PMID: 34715087 DOI: 10.1016/j.ijpara.2021.08.007] [Citation(s) in RCA: 129] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 08/25/2021] [Accepted: 08/31/2021] [Indexed: 12/11/2022]
Abstract
The protozoan parasites Cryptosporidium and Giardia are significant causes of diarrhoea worldwide and are responsible for numerous waterborne and foodborne outbreaks of diseases. Over the last 50 years, the development of improved detection and typing tools has facilitated the expanding range of named species. Currently at least 44 Cryptosporidium spp. and >120 genotypes, and nine Giardia spp., are recognised. Many of these Cryptosporidium genotypes will likely be described as species in the future. The phylogenetic placement of Cryptosporidium at the genus level is still unclear and further research is required to better understand its evolutionary origins. Zoonotic transmission has long been known to play an important role in the epidemiology of cryptosporidiosis and giardiasis, and the development and application of next generation sequencing tools is providing evidence for this. Comparative whole genome sequencing is also providing key information on the genetic mechanisms for host specificity and human infectivity, and will enable One Health management of these zoonotic parasites in the future.
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Affiliation(s)
- Una M Ryan
- Harry Butler Institute, Murdoch University, Perth, Western Australia, Australia.
| | - Yaoyu Feng
- Center for Emerging and Zoonotic Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou, Guangdong, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, Guangdong, China
| | - Ronald Fayer
- Environmental Microbial and Food Safety Laboratory, Agricultural Research Service, United States Department of Agriculture, 10300 Baltimore Avenue, BARC-East, Building 173, Beltsville, MD 20705, USA
| | - Lihua Xiao
- Center for Emerging and Zoonotic Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou, Guangdong, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, Guangdong, China
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Lebbad M, Winiecka-Krusnell J, Stensvold CR, Beser J. High Diversity of Cryptosporidium Species and Subtypes Identified in Cryptosporidiosis Acquired in Sweden and Abroad. Pathogens 2021; 10:pathogens10050523. [PMID: 33926039 PMCID: PMC8147002 DOI: 10.3390/pathogens10050523] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 04/23/2021] [Accepted: 04/23/2021] [Indexed: 11/16/2022] Open
Abstract
The intestinal protozoan parasite Cryptosporidium is an important cause of diarrheal disease worldwide. The aim of this study was to expand the knowledge on the molecular epidemiology of human cryptosporidiosis in Sweden to better understand transmission patterns and potential zoonotic sources. Cryptosporidium-positive fecal samples were collected between January 2013 and December 2014 from 12 regional clinical microbiology laboratories in Sweden. Species and subtype determination was achieved using small subunit ribosomal RNA and 60 kDa glycoprotein gene analysis. Samples were available for 398 patients, of whom 250 (63%) and 138 (35%) had acquired the infection in Sweden and abroad, respectively. Species identification was successful for 95% (379/398) of the samples, revealing 12 species/genotypes: Cryptosporidium parvum (n = 299), C. hominis (n = 49), C. meleagridis (n = 8), C. cuniculus (n = 5), Cryptosporidium chipmunk genotype I (n = 5), C. felis (n = 4), C. erinacei (n = 2), C. ubiquitum (n = 2), and one each of C. suis, C. viatorum, C. ditrichi, and Cryptosporidium horse genotype. One patient was co-infected with C. parvum and C. hominis. Subtyping was successful for all species/genotypes, except for C. ditrichi, and revealed large diversity, with 29 subtype families (including 4 novel ones: C. parvum IIr, IIs, IIt, and Cryptosporidium horse genotype Vic) and 81 different subtypes. The most common subtype families were IIa (n = 164) and IId (n = 118) for C. parvum and Ib (n = 26) and Ia (n = 12) for C. hominis. Infections caused by the zoonotic C. parvum subtype families IIa and IId dominated both in patients infected in Sweden and abroad, while most C. hominis cases were travel-related. Infections caused by non-hominis and non-parvum species were quite common (8%) and equally represented in cases infected in Sweden and abroad.
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Affiliation(s)
- Marianne Lebbad
- Department of Microbiology, Public Health Agency of Sweden, 171 82 Solna, Sweden; (M.L.); (J.W.-K.)
| | | | - Christen Rune Stensvold
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, DK-2300 Copenhagen S, Denmark;
| | - Jessica Beser
- Department of Microbiology, Public Health Agency of Sweden, 171 82 Solna, Sweden; (M.L.); (J.W.-K.)
- Correspondence:
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Zaheer T, Imran M, Abbas RZ, Zaheer I, Malik MA. Avian cryptosporidiosis and its zoonotic significance in Asia. WORLD POULTRY SCI J 2021. [DOI: 10.1080/00439339.2020.1866961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Tean Zaheer
- Department of Parasitology, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Imran
- Department of Parasitology, University of Agriculture, Faisalabad, Pakistan
| | - Rao Zahid Abbas
- Department of Parasitology, University of Agriculture, Faisalabad, Pakistan
| | - Iqra Zaheer
- Department of Pathology, University of Agriculture, Faisalabad, Pakistan
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Zahedi A, Ryan U. Cryptosporidium – An update with an emphasis on foodborne and waterborne transmission. Res Vet Sci 2020; 132:500-512. [DOI: 10.1016/j.rvsc.2020.08.002] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/24/2020] [Accepted: 08/03/2020] [Indexed: 12/15/2022]
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Garcia-R JC, Pita AB, Velathanthiri N, French NP, Hayman DTS. Species and genotypes causing human cryptosporidiosis in New Zealand. Parasitol Res 2020; 119:2317-2326. [PMID: 32494897 DOI: 10.1007/s00436-020-06729-w] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 05/25/2020] [Indexed: 01/03/2023]
Abstract
Cryptosporidium is one of the most common causes of diarrhoea around the world. Successful management and prevention of this infectious disease requires knowledge of the diversity of species and subtypes causing human disease. We use sequence data from 2598 human faecal samples collected during an 11-year period (2009-2019) to better understand the impact of different species and subtypes on public health and to gain insights into the variation of human cryptosporidiosis in New Zealand. Human cryptosporidiosis in New Zealand is caused by a high diversity of species and subtypes. Six species cause human disease in New Zealand: C. hominis, C. parvum, C. cuniculus, C. erinacei, C. meleagridis and C. tyzzeri. Sequence analysis of the gp60 gene identified 16 subtype families and 101 subtypes. Cryptosporidium hominis IbA10G2 and C. parvum IIaA18G3R1 were the most frequent causes of human cryptosporidiosis with 27% and 29% of infections, respectively. Cryptosporidium hominis presented a peak of notified human cases during autumn (March-May) whereas most cases of human cryptosporidiosis caused by C. parvum are found during the calving and lambing season in spring (September-November). We also reported some subtypes that have been rarely detected in other countries such as IbA20G2 and IIoA13G1 and a low prevalence of the hypertransmissible and virulent IIaA15G2R1. This study provides insight into the variability of cryptosporidiosis in New Zealand essential for disease management and surveillance to prevent the introduction or spread of new species and subtypes in the country.
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Affiliation(s)
- Juan C Garcia-R
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, School of Veterinary Science, Massey University, Private Bag 11-222, Palmerston North, New Zealand.
| | - Anthony B Pita
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, School of Veterinary Science, Massey University, Private Bag 11-222, Palmerston North, New Zealand
| | - Niluka Velathanthiri
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, School of Veterinary Science, Massey University, Private Bag 11-222, Palmerston North, New Zealand
| | - Nigel P French
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, School of Veterinary Science, Massey University, Private Bag 11-222, Palmerston North, New Zealand
| | - David T S Hayman
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, School of Veterinary Science, Massey University, Private Bag 11-222, Palmerston North, New Zealand
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9
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Pielok Ł, Nowak S, Kłudkowska M, Frąckowiak K, Kuszel Ł, Zmora P, Stefaniak J. Massive Cryptosporidium infections and chronic diarrhea in HIV-negative patients. Parasitol Res 2019; 118:1937-1942. [PMID: 30976968 PMCID: PMC6520477 DOI: 10.1007/s00436-019-06302-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 03/25/2019] [Indexed: 12/15/2022]
Abstract
Protozoa of the genus Cryptosporidium are common parasites of domestic and wild animals—mammals, birds, reptiles, and fishes. The invasive forms are thick-walled oocysts, which can be present in water supplies, on fruits, vegetables, or in the soil contaminated with feces. In this work, we describe three cases of middle-aged persons with massive Cryptosporidium hominis infection and chronic diarrhea with no immunological abnormalities and no history of previous travels to tropical countries. The lesions discovered during colonoscopy within the large intestine–cryptitis and the histopathological changes were related to massive cryptosporidiosis. All these statements indicate necessity of parasitological stool examination in cases with chronic diarrhea in which no etiological agents are detected, but not only in HIV positive individuals. Parasite’s eradication leads to symptom disappearance as well as improvement of histopathological mucosa alterations.
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Affiliation(s)
- Łukasz Pielok
- Department and Clinic of Tropical and Parasitic Diseases, Poznań University of Medical Sciences, Przybyszewskiego Street, 60-355, Poznań, Poland.
| | - Szymon Nowak
- Department and Clinic of Tropical and Parasitic Diseases, Poznań University of Medical Sciences, Przybyszewskiego Street, 60-355, Poznań, Poland
| | - Matylda Kłudkowska
- Department and Clinic of Tropical and Parasitic Diseases, Poznań University of Medical Sciences, Przybyszewskiego Street, 60-355, Poznań, Poland.,Central Laboratory of Microbiology, H. Święcicki University Hospital, Poznań, Poland
| | - Krystyna Frąckowiak
- Central Laboratory of Microbiology, H. Święcicki University Hospital, Poznań, Poland
| | - Łukasz Kuszel
- Department of Medical Genetics, Poznań University of Medical Sciences, Poznań, Poland
| | - Paweł Zmora
- Institute of Bioorganic Chemistry Polish Academy of Sciences, Poznań, Poland
| | - Jerzy Stefaniak
- Department and Clinic of Tropical and Parasitic Diseases, Poznań University of Medical Sciences, Przybyszewskiego Street, 60-355, Poznań, Poland
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Zhao W, Zhou H, Huang Y, Xu L, Rao L, Wang S, Wang W, Yi Y, Zhou X, Wu Y, Ma T, Wang G, Hu X, Peng R, Yin F, Lu G. Cryptosporidium spp. in wild rats ( Rattus spp.) from the Hainan Province, China: Molecular detection, species/genotype identification and implications for public health. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2019; 9:317-321. [PMID: 31338292 PMCID: PMC6626849 DOI: 10.1016/j.ijppaw.2019.03.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 03/21/2019] [Accepted: 03/22/2019] [Indexed: 12/16/2022]
Abstract
Wild rats (Rattus spp.) carry many zoonotic pathogens including Cryptosporidium. Due to the close proximity of rats to humans in urban environments, the potential for disease transmission is high. Cryptosporidium is a protozoan parasite which when ingested causes serious human illness. Despite its importance, genetic characterization of Cryptosporidium in wild rats in the Hainan province of China has not been performed. In this study, we analyzed the occurrence and genetics of Cryptosporidium in wild rats from Hainan, China. From December 2017 to October 2018, 150 wild rats were captured and fresh fecal material was collected from intestinal sections. Rat species were identified by PCR-based amplification and analysis of the vertebrate cytochrome b (cytb) gene. Cryptosporidium was examined by PCR amplification of the partial small subunit of ribosomal DNA (SSU rDNA). C. viatorum were subtyped by PCR analysis of the gp60 gene. A total of four rat species were identified including Asian house rats (Rattus tanezumi) (n = 46), brown rats (Rattus norvegicus) (n = 56), Edward's long-tailed rats (Leopoldamys edwardsi) (n = 38) and muridae (Niviventer fulvescens) (n = 10), with Cryptosporidium positive rates of 73.9%, 28.6%, 55.3% and 40.0%, respectively (average infection rate: 50.0%, 75/150. Sequence analysis confirmed the presence of four Cryptosporidium species and two genotypes including C. viatorum (n = 11); C. occultus (n = 2); C. muris (n = 1); and C. erinacei (n = 1); rat genotypes III (n = 13) and IV (n = 47). Three novel subtypes of C. viatorum were identified in 6 of the 11 infected Edward's long-tailed rats: XVcA2G1a (n = 4), XVcA2G1b (n = 1) and XVdA3 (n = 1). The identification of human pathogenic C. viatorum and zoonotic C. occultus, C. muris and C. erinacei, suggested that wild rats infected with Cryptosporidium pose a threat to human health. Taken together, these findings highlight the need to control the rat population in Hainan, China. The need to improve the public awareness of the risk of disease transmission from wild rats to humans is also highlighted. This is the first report of the identification of Cryptosporidium in wild rats in Hainan Province, China. A total of 75 out of 150 (50.0%) specimens were PCR-positive for Cryptosporidium. Six known species or genotypes and three novel subtypes of C. viatorum were identified. The possibility of transmission of Cryptosporidium between wild rats and humans was suggested.
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Affiliation(s)
- Wei Zhao
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Translation Medicine Tropical Diseases, Hainan Medical University, Haikou, Hainan, China
| | - Huanhuan Zhou
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Translation Medicine Tropical Diseases, Hainan Medical University, Haikou, Hainan, China
| | - Yi Huang
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Translation Medicine Tropical Diseases, Hainan Medical University, Haikou, Hainan, China
| | - Liulian Xu
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Translation Medicine Tropical Diseases, Hainan Medical University, Haikou, Hainan, China
| | - Langyu Rao
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Translation Medicine Tropical Diseases, Hainan Medical University, Haikou, Hainan, China
| | - Shanshan Wang
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Translation Medicine Tropical Diseases, Hainan Medical University, Haikou, Hainan, China
| | - Wenqi Wang
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Translation Medicine Tropical Diseases, Hainan Medical University, Haikou, Hainan, China
| | - Yufang Yi
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Translation Medicine Tropical Diseases, Hainan Medical University, Haikou, Hainan, China
| | - Xiaojun Zhou
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Translation Medicine Tropical Diseases, Hainan Medical University, Haikou, Hainan, China
| | - Yue Wu
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Translation Medicine Tropical Diseases, Hainan Medical University, Haikou, Hainan, China
| | - Tianming Ma
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Translation Medicine Tropical Diseases, Hainan Medical University, Haikou, Hainan, China
| | - Gaoyu Wang
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Translation Medicine Tropical Diseases, Hainan Medical University, Haikou, Hainan, China
| | - Xiaoyuan Hu
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Translation Medicine Tropical Diseases, Hainan Medical University, Haikou, Hainan, China
| | - Ruoyan Peng
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Translation Medicine Tropical Diseases, Hainan Medical University, Haikou, Hainan, China
| | - Feifei Yin
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Translation Medicine Tropical Diseases, Hainan Medical University, Haikou, Hainan, China
- Corresponding author. Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China.
| | - Gang Lu
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, China
- Key Laboratory of Translation Medicine Tropical Diseases, Hainan Medical University, Haikou, Hainan, China
- Corresponding author. Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, China.
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Plutzer J, Lassen B, Jokelainen P, Djurković-Djaković O, Kucsera I, Dorbek-Kolin E, Šoba B, Sréter T, Imre K, Omeragić J, Nikolić A, Bobić B, Živičnjak T, Lučinger S, Stefanović LL, Kučinar J, Sroka J, Deksne G, Keidāne D, Kváč M, Hůzová Z, Karanis P. Review of Cryptosporidium and Giardia in the eastern part of Europe, 2016. ACTA ACUST UNITED AC 2019; 23. [PMID: 29382412 PMCID: PMC5801338 DOI: 10.2807/1560-7917.es.2018.23.4.16-00825] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
This paper reviews the current knowledge and understanding of Cryptosporidium spp. and Giardia spp. in humans, animals and the environment in 10 countries in the eastern part of Europe: Bosnia and Herzegovina, Croatia, Czech Republic, Estonia, Hungary, Latvia, Poland, Romania, Serbia and Slovenia. Methods: Published scientific papers and conference proceedings from the international and local literature, official national health service reports, national databases and doctoral theses in local languages were reviewed to provide an extensive overview on the epidemiology, diagnostics and research on these pathogens, as well as analyse knowledge gaps and areas for further research. Results: Cryptosporidium spp. and Giardia spp. were found to be common in eastern Europe, but the results from different countries are difficult to compare because of variations in reporting practices and detection methodologies used. Conclusion: Upgrading and making the diagnosis/detection procedures more uniform is recommended throughout the region. Public health authorities should actively work towards increasing reporting and standardising reporting practices as these prerequisites for the reported data to be valid and therefore necessary for appropriate control plans.
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Affiliation(s)
- Judit Plutzer
- Department of Water Hygiene, National Public Health Institute, Budapest, Hungary
| | - Brian Lassen
- Department of Veterinary Disease Biology, University of Copenhagen, Frederiksberg, Denmark.,Department of Basic Veterinary Sciences and Population Medicine, Institute of Veterinary Medicine and Animal Science, Estonian University of Life Sciences, Tartu, Estonia
| | - Pikka Jokelainen
- Department of Bacteria, Parasites & Fungi, Infectious Disease Preparedness, Statens Serum Institut, Copenhagen, Denmark.,Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.,Department of Basic Veterinary Sciences and Population Medicine, Institute of Veterinary Medicine and Animal Science, Estonian University of Life Sciences, Tartu, Estonia
| | - Olgica Djurković-Djaković
- Centre of Excellence for Food- and Vector-borne Zoonoses, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - István Kucsera
- Department of Parasitology, National Public Health Institute, Budapest, Hungary
| | - Elisabeth Dorbek-Kolin
- Department of Basic Veterinary Sciences and Population Medicine, Institute of Veterinary Medicine and Animal Science, Estonian University of Life Sciences, Tartu, Estonia
| | - Barbara Šoba
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Tamás Sréter
- National Food Chain Safety Office, Veterinary Diagnostic Directorate, Budapest, Hungary
| | - Kálmán Imre
- Banat's University of Agricultural Sciences and Veterinary Medicine 'King Michael I of Romania' from Timişoara, Faculty of Veterinary Medicine, Department of Animal Production and Veterinary Public Health, Timişoara, Romania
| | - Jasmin Omeragić
- University of Sarajevo, Veterinary Faculty, Department of Parasitology and Invasive Diseases of Animals, Sarajevo, Bosnia and Herzegovina
| | - Aleksandra Nikolić
- Centre of Excellence for Food- and Vector-borne Zoonoses, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Branko Bobić
- Centre of Excellence for Food- and Vector-borne Zoonoses, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Tatjana Živičnjak
- Department for Parasitology and Parasitic Diseases with Clinic, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
| | - Snježana Lučinger
- Department for Parasitology and Parasitic Diseases with Clinic, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
| | | | - Jasmina Kučinar
- Department of Microbiology, Public Health Institute of Istrian Region, Pula, Croatia
| | - Jacek Sroka
- Department of Parasitology, National Veterinary Research Institute, Puławy, Poland
| | - Gunita Deksne
- Institute of Food Safety, Animal Health and Environment - 'BIOR', Riga, Latvia
| | - Dace Keidāne
- Faculty of Veterinary Medicine, Latvia University of Agriculture, Jelgava, Latvia
| | - Martin Kváč
- Faculty of Agriculture, University of South Bohemia in České Budějovice, České Budějovice, Czech Republic.,Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, České Budějovice, Czech Republic
| | - Zuzana Hůzová
- Health Institute in Ústí nad Labem, Prague, Czech Republic
| | - Panagiotis Karanis
- Medical School, University of Cologne, Cologne, Germany.,State Key Laboratory for Plateau Ecology and Agriculture, Centre for Biomedicine and Infectious Diseases Qinghai University, Xining, China
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12
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Native and introduced squirrels in Italy host different Cryptosporidium spp. Eur J Protistol 2017; 61:64-75. [PMID: 28992520 DOI: 10.1016/j.ejop.2017.09.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 09/13/2017] [Accepted: 09/15/2017] [Indexed: 11/20/2022]
Abstract
The present study was undertaken to describe Cryptosporidium spp. infection in tree squirrels from 17 locations in Northern Italy. A total of 357 squirrels were examined, including species native to Europe (Sciurus vulgaris; n=123), and species introduced from North America (Sciurus carolinensis; n=162) and Southeast Asia (Callosciurus erythraeus; n=72). Faecal samples of all squirrels were examined for the presence of Cryptosporidium infection by microscopy (flotation method) and PCR/sequence analysis of the Cryptosporidium 18S rRNA, actin, and gp60 genes. Despite the overlapping ranges of native and introduced tree squirrel species in the study area, they host different Cryptosporidium spp. Sciurus vulgaris were exclusively infected with Cryptosporidium ferret genotype (n=13) belonging to three novel gp60 subtypes, VIIIb-VIIId. Sciurus carolinensis hosted C. ubiquitum subtype XIIb (n=2), Cryptosporidium skunk genotype subtype XVIa (n=3), and chipmunk genotype I subtype XIVa (n=1). Cryptosporidium chipmunk genotype I subtype XIVa was also found in two C. erythraeus. Comparing data from this and previous studies, we propose that Cryptosporidium skunk genotype and possibly C. ubiquitum subtype XIIb were introduced to Europe with eastern grey squirrels. Cryptosporidium chipmunk genotype I and ferret genotype were associated with high intensity infections, but there was no association with diarrhoea.
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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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Xiao L, Feng Y. Molecular epidemiologic tools for waterborne pathogens Cryptosporidium spp. and Giardia duodenalis. Food Waterborne Parasitol 2017; 8-9:14-32. [PMID: 32095639 PMCID: PMC7034008 DOI: 10.1016/j.fawpar.2017.09.002] [Citation(s) in RCA: 142] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 09/19/2017] [Accepted: 09/19/2017] [Indexed: 01/26/2023] Open
Abstract
Molecular diagnostic tools have played an important role in improving our understanding of the transmission of Cryptosporidium spp. and Giardia duodenalis, which are two of the most important waterborne parasites in industrialized nations. Genotyping tools are frequently used in the identification of host-adapted Cryptosporidium species and G. duodenalis assemblages, allowing the assessment of infection sources in humans and public health potential of parasites found in animals and the environment. In contrast, subtyping tools are more often used in case linkages, advanced tracking of infections sources, and assessment of disease burdens attributable to anthroponotic and zoonotic transmission. More recently, multilocus typing tools have been developed for population genetic characterizations of transmission dynamics and delineation of mechanisms for the emergence of virulent subtypes. With the recent development in next generation sequencing techniques, whole genome sequencing and comparative genomic analysis are increasingly used in characterizing Cryptosporidium spp. and G. duodenalis. The use of these tools in epidemiologic studies has identified significant differences in the transmission of Cryptosporidium spp. in humans between developing countries and industrialized nations, especially the role of zoonotic transmission in human infection. Geographic differences are also present in the distribution of G. duodenalis assemblages A and B in humans. In contrast, there is little evidence for widespread zoonotic transmission of giardiasis in both developing and industrialized countries. Differences in virulence have been identified among Cryptosporidium species and subtypes, and possibly between G. duodenalis assemblages A and B, and genetic recombination has been identified as one mechanism for the emergence of virulent C. hominis subtypes. These recent advances are providing insight into the epidemiology of waterborne protozoan parasites in both developing and developed countries.
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Affiliation(s)
- Lihua Xiao
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30329, USA
| | - Yaoyu Feng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
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15
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Local and global genetic diversity of protozoan parasites: Spatial distribution of Cryptosporidium and Giardia genotypes. PLoS Negl Trop Dis 2017; 11:e0005736. [PMID: 28704362 PMCID: PMC5526614 DOI: 10.1371/journal.pntd.0005736] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 07/25/2017] [Accepted: 06/21/2017] [Indexed: 01/09/2023] Open
Abstract
Cryptosporidiosis and giardiasis are recognized as significant enteric diseases due to their long-term health effects in humans and their economic impact in agriculture and medical care. Molecular analysis is essential to identify species and genotypes causing these infectious diseases and provides a potential tool for monitoring. This study uses information on species and genetic variants to gain insights into the geographical distribution and spatial patterns of Cryptosporidium and Giardia parasites. Here, we describe the population heterogeneity of genotypic groups within Cryptosporidium and Giardia present in New Zealand using gp60 and gdh markers to compare the observed variation with other countries around the globe. Four species of Cryptosporidium (C. hominis, C. parvum, C. cuniculus and C. erinacei) and one species of Giardia (G. intestinalis) were identified. These species have been reported worldwide and there are not unique Cryptosporidium gp60 subtype families and Giardiagdh assemblages in New Zealand, most likely due to high gene flow of historical and current human activity (travel and trade) and persistence of large host population sizes. The global analysis revealed that genetic variants of these pathogens are widely distributed. However, genetic variation is underestimated by data biases (e.g. neglected submission of sequences to genetic databases) and low sampling. New genotypes are likely to be discovered as sampling efforts increase according to accumulation prediction analyses, especially for C. parvum. Our study highlights the need for greater sampling and archiving of genotypes globally to allow comparative analyses that help understand the population dynamics of these protozoan parasites. Overall our study represents a comprehensive overview for exploring local and global protozoan genotype diversity and advances our understanding of the importance for surveillance and potential risk associated with these infectious diseases. Infectious diseases threaten the health and well-being of wildlife, livestock and human populations and contribute to significant economic impact in agriculture and medical care. Cryptosporidium and Giardia are enteric protozoan pathogens that cause diarrhea and nutritional disorders on a global level. Using molecular analysis and a review framework we showed that species and genetic variants within genera Cryptosporidium and Giardia (including two species recently infecting humans) found in an island system are not different from other parts of the world. This similarity is likely due to high gene flow of historical and current human activity (travel and trade) and persistence of large host population sizes, such as cattle and people. We also show that, although species and genotypes are widely distributed, new variants will arise when sampling effort increase and their dispersal will be facilitated by human activity. These findings suggest that geographical distribution of species and genotypes within Cryptosporidium and Giardia parasites may yield important clues for designing effective surveillance strategies and identification of factors driving within and cross species transmission.
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16
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Hofmannová L, Hauptman K, Huclová K, Květoňová D, Sak B, Kváč M. Cryptosporidium erinacei and C. parvum in a group of overwintering hedgehogs. Eur J Protistol 2016; 56:15-20. [PMID: 27344109 DOI: 10.1016/j.ejop.2016.05.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 05/16/2016] [Accepted: 05/26/2016] [Indexed: 11/29/2022]
Abstract
This study describes cryptosporidiosis in an overwintering group of 15 European hedgehogs (Erinaceus europaeus), comprising 3 adults and 12 juveniles. Four juvenile hedgehogs were hospitalised with anorexia, malodorous diarrhoea and dehydration. Immediate parasitological examinations revealed the presence of Cryptosporidium sp. in these animals and also in 5 other juveniles. All hedgehogs were coproscopically monitored for 4 months over the winter season. Shedding of Cryptosporidium oocysts persisted from 6 to 70 days. Repeated shedding of Cryptosporidium oocysts occurred in 3 animals after 4 months subsequent to the first outbreak. Clinical signs were observed only at the beginning of the outbreak (apathy, anorexia, general weakness, mild dehydration, and malodorous faeces with changed consistence - soft/diarrhoea) in the 4 hospitalised juveniles. Overall 11 hedgehogs were Cryptosporidium-positive, both microscopically and by PCR methods. Sequence analyses of SSU rRNA and gp60 genes revealed the presence of C. parvum IIdA18G1 subtype in all positive hedgehogs. Moreover, 3 hedgehogs had a mixed infection of the zoonotic C. parvum and C. erinacei XIIIaA19R13 subtype. Cryptosporidium infections can be rapidly spread among debilitated animals and the positive hedgehogs released back into the wild can be a source of the infection for individuals weakened after hibernation.
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Affiliation(s)
- Lada Hofmannová
- Department of Pathological Morphology and Parasitology, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences Brno, Palackého tř. 1946/1, 612 42 Brno, Czech Republic; Central European Institute of Technology, University of Veterinary and Pharmaceutical Sciences Brno, Palackého tř. 1946/1, 612 42 Brno, Czech Republic.
| | - Karel Hauptman
- Avian & Exotic Animal Clinic, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences Brno, Palackého tř. 1946/1, 612 42 Brno, Czech Republic
| | - Kristýna Huclová
- Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 31, 370 05 České Budějovice, Czech Republic
| | - Dana Květoňová
- Institute of Parasitology, Biology Centre of Czech Academy of Sciences, v.v.i., Branišovská 31, 370 05 České Budějovice, Czech Republic
| | - Bohumil Sak
- Institute of Parasitology, Biology Centre of Czech Academy of Sciences, v.v.i., Branišovská 31, 370 05 České Budějovice, Czech Republic
| | - Martin Kváč
- Institute of Parasitology, Biology Centre of Czech Academy of Sciences, v.v.i., Branišovská 31, 370 05 České Budějovice, Czech Republic; Faculty of Agriculture, University of South Bohemia in České Budějovice, Branišovská 31, 370 05 České Budějovice, Czech Republic
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17
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Sangster L, Blake DP, Robinson G, Hopkins TC, Sa RCC, Cunningham AA, Chalmers RM, Lawson B. Detection and molecular characterisation of Cryptosporidium parvum in British European hedgehogs (Erinaceus europaeus). Vet Parasitol 2015; 217:39-44. [PMID: 26827859 DOI: 10.1016/j.vetpar.2015.12.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Revised: 11/28/2015] [Accepted: 12/11/2015] [Indexed: 10/22/2022]
Abstract
Surveillance was conducted for the occurrence of protozoan parasites of the genus Cryptosporidium in European hedgehogs (Erinaceus europaeus) in Great Britain. In total, 108 voided faecal samples were collected from hedgehogs newly admitted to eight wildlife casualty treatment and rehabilitation centres. Terminal large intestinal (LI) contents from three hedgehog carcasses were also analysed. Information on host and location variables, including faecal appearance, body weight, and apparent health status, was compiled. Polymerase Chain Reaction (PCR) targeting the 18S ribosomal RNA gene, confirmed by sequencing, revealed an 8% (9/111) occurrence of Cryptosporidium parvum in faeces or LI contents, with no significant association between the host or location variables and infection. Archived small intestinal (SI) tissue from a hedgehog with histological evidence of cryptosporidiosis was also positive for C. parvum by PCR and sequence analysis of the 18S rRNA gene. No other Cryptosporidium species were detected. PCR and sequencing of the glycoprotein 60 gene identified three known zoonotic C. parvum subtypes not previously found in hedgehogs: IIdA17G1 (n=4), IIdA19G1 (n=1) and IIdA24G1 (n=1). These subtypes are also known to infect livestock. Another faecal sample contained C. parvum IIcA5G3j which has been found previously in hedgehogs, and for which there is one published report in a human, but is not known to affect livestock. The presence of zoonotic subtypes of C. parvum in British hedgehogs highlights a potential public health concern. Further research is needed to better understand the epidemiology and potential impacts of Cryptosporidium infection in hedgehogs.
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Affiliation(s)
- Lucy Sangster
- Institute of Zoology, Zoological Society of London, Regents Park, London NW1 4RY, United Kingdom; The Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire AL9 7TA, United Kingdom
| | - Damer P Blake
- The Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire AL9 7TA, United Kingdom
| | - Guy Robinson
- Cryptosporidium Reference Unit, Public Health Wales Microbiology ABM, Singleton Hospital, Sgeti, Swansea SA2 8QA, United Kingdom
| | - Timothy C Hopkins
- Institute of Zoology, Zoological Society of London, Regents Park, London NW1 4RY, United Kingdom
| | - Ricardo C C Sa
- Institute of Zoology, Zoological Society of London, Regents Park, London NW1 4RY, United Kingdom
| | - Andrew A Cunningham
- Institute of Zoology, Zoological Society of London, Regents Park, London NW1 4RY, United Kingdom
| | - Rachel M Chalmers
- Cryptosporidium Reference Unit, Public Health Wales Microbiology ABM, Singleton Hospital, Sgeti, Swansea SA2 8QA, United Kingdom
| | - Becki Lawson
- Institute of Zoology, Zoological Society of London, Regents Park, London NW1 4RY, United Kingdom.
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18
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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: 123] [Impact Index Per Article: 13.7] [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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19
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Emergence of Cryptosporidium hominis Monkey Genotype II and Novel Subtype Family Ik in the Squirrel Monkey (Saimiri sciureus) in China. PLoS One 2015; 10:e0141450. [PMID: 26509708 PMCID: PMC4624928 DOI: 10.1371/journal.pone.0141450] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 10/08/2015] [Indexed: 01/12/2023] Open
Abstract
A single Cryptosporidium isolate from a squirrel monkey with no clinical symptoms was obtained from a zoo in Ya'an city, China, and was genotyped by PCR amplification and DNA sequencing of the small-subunit ribosomal RNA (SSU rRNA), 70-kDa heat shock protein (HSP70), Cryptosporidium oocyst wall protein, and actin genes. This multilocus genetic characterization determined that the isolate was Cryptosporidium hominis, but carried 2, 10, and 6 nucleotide differences in the SSU rRNA, HSP70, and actin loci, respectively, which is comparable to the variations at these loci between C. hominis and the previously reported monkey genotype (2, 3, and 3 nucleotide differences). Phylogenetic studies, based on neighbor-joining and maximum likelihood methods, showed that the isolate identified in the current study had a distinctly discordant taxonomic status, distinct from known C. hominis and also from the monkey genotype, with respect to the three loci. Restriction fragment length polymorphisms of the SSU rRNA gene obtained from this study were similar to those of known C. hominis but clearly differentiated from the monkey genotype. Further subtyping was performed by sequence analysis of the gene encoding the 60-kDa glycoprotein (gp60). Maximum homology of only 88.3% to C. hominis subtype IdA10G4 was observed for the current isolate, and phylogenetic analysis demonstrated that this particular isolate belonged to a novel C. hominis subtype family, IkA7G4. This study is the first to report C. hominis infection in the squirrel monkey and, based on the observed genetic characteristics, confirms a new C. hominis genotype, monkey genotype II. Thus, these results provide novel insights into genotypic variation in C. hominis.
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Nahrevanian H, Assmar M, Zahraei SM, Mafi M, Masoumi Asl H, Ghasemi FS. Sporozoan Protozoa and Enteroparasites in the Gastroenteritic Patients Referring to the Healthcare Centers of Seven Provinces of Iran. INTERNATIONAL JOURNAL OF ENTERIC PATHOGENS 2015. [DOI: 10.17795/ijep27087] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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21
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Abe N, Matsubara K. Molecular identification of Cryptosporidium isolates from exotic pet animals in Japan. Vet Parasitol 2015; 209:254-7. [PMID: 25801359 DOI: 10.1016/j.vetpar.2015.02.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 02/10/2015] [Accepted: 02/28/2015] [Indexed: 10/23/2022]
Abstract
The Cryptosporidium horse genotype, a zoonotic protozoan parasite first found in a Prezewalski wild horse, has not been found in any other mammal but calves, horses, and humans. Hedgehogs, popular exotic pet animals in Japan, are a reservoir of two zoonotic Cryptosporidum: C. parvum and C. erinacei (previously known as the hedgehog genotype). Recently, after finding Cryptosporidium infection in a four-toed hedgehog (Atelerix albiventris), we identified the isolate genetically as the Cryptosporidium horse genotype. Its subtype (VIbA13) was the same as that of an isolate from a pet shop employee with severe clinical symptoms, as reported previously from sequencing analysis of the partial Cryptosporidum 60kDa glycoprotein gene sequence. The occurrence of this genotype in hedgehog indicates that the horse genotype has broad host specificity. This report is the first of a study identifying isolates from pet reptiles genetically in Japan. The study identified a new host (Teratoscincus scincus) in C. serpentis lizard genotype by sequencing analysis of partial SSU rRNA and actin genes.
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Affiliation(s)
- Niichiro Abe
- Department of Microbiology, Osaka City Institute of Public Health and Environmental Sciences, Tojo-cho 8-34, Tennoji-ku, Osaka 543-0026, Japan.
| | - Katsuki Matsubara
- Banquet Animal Hospital, Ikejiri 3-16-4, Setagaya-ku, Tokyo 154-0001, Japan
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Wagnerová P, Sak B, McEvoy J, Rost M, Perec Matysiak A, Ježková J, Kváč M. Genetic diversity of Cryptosporidium spp. including novel identification of the Cryptosporidium muris and Cryptosporidium tyzzeri in horses in the Czech Republic and Poland. Parasitol Res 2015; 114:1619-24. [DOI: 10.1007/s00436-015-4353-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 01/22/2015] [Indexed: 10/23/2022]
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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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Significantly higher occurrence of Cryptosporidium infection in Roma children compared with non-Roma children in Slovakia. Eur J Clin Microbiol Infect Dis 2014; 33:1401-6. [DOI: 10.1007/s10096-014-2082-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 02/17/2014] [Indexed: 11/30/2022]
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25
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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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