Identification and characterization of a Chinese isolate of Cryptosporidium serpentis from dairy cattle

Fu, Chen; Qiu, Huiling

doi:10.1007/s00436-012-3024-5

Cited by 18 publications

(6 citation statements)

References 35 publications

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“…Cryptosporidium meleagridis, an important zoonotic species that inhabits birds, was also detected in pre-weaned dairy calves in Heilongjiang Province, north-eastern China (Zhang et al, 2013). Additionally, Cryptosporidium hominis and Cryptosporidium serpentis were also found in dairy cattle in some provinces of eastern China (Chen & Huang, 2012;Chen & Qiu, 2012).…”

Section: Introductionmentioning

confidence: 95%

Molecular characterization of Cryptosporidium spp. in pre-weaned calves in Shaanxi Province, north-western China

Fang

Wang

et al. 2015

Journal of Medical Microbiology

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Section: Introductionmentioning

confidence: 95%

Molecular characterization of Cryptosporidium spp. in pre-weaned calves in Shaanxi Province, north-western China

Fang

Wang

et al. 2015

Journal of Medical Microbiology

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“…Both intestinal and gastric cryptosporidiosis has been described in snakes and lizards. To date, two species are recognised; C. serpentis (gastric) and C. varanii ( C. saurophilum ) (intestinal) (Levine, 1980, Pavlásek et al., 1995, Koudela and Modry, 1998, Pavlásek and Ryan, 2008); neither of which have been reported in humans, but C. serpentis has been identified in cattle (Azami et al., 2007, Chen and Qiu, 2012). A new intestinal species, Cryptosporidium ducismarci (tortoise genotype II) has been reported in several species of tortoises, snakes and lizards (Traversa, 2010).…”

Section: Wildlife Associated Outbreaks and Water Contaminationmentioning

confidence: 99%

Public health significance of zoonotic Cryptosporidium species in wildlife: Critical insights into better drinking water management

Zahedi

Paparini

Jian

et al. 2016

International Journal for Parasitology: Parasites and Wildlife

162

144

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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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“…Studies are urgently needed to address public health issues related to the rapid economic development in China, such as changes in incidence and epidemiology of cryptosporidiosis in humans, impacts of concentrated animal feeding operations on Cryptosporidium transmission and environmental contamination, and potential introduction and dispersal of virulent and zoonotic Cryptosporidium species and subtypes from the Belt and Road countries. Efforts also could be made to substantiate some unusual molecular epidemiologic observations of cryptosporidiosis in China by research teams, such as the finding of C. tyzzeri and C. serpentis in several species of farm animals (Chen and Huang, 2007 , 2012 ; Chen and Qiu, 2012 ) and the unexpectedly high occurrence of C. andersoni in urban human populations (Jiang et al, 2014 ; Liu H. et al, 2014 ). These observations are in stark contrast to other reports, and have important public health and regulatory implications.…”

Section: Challenges and Opportunities Of Cryptosporidium mentioning

confidence: 99%

Molecular Epidemiology of Cryptosporidiosis in China

2017

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Molecular epidemiology of cryptosporidiosis is an active research area in China. The use of genotyping and subtyping tools in prevalence studies has led to the identification of unique characteristics of Cryptosporidium infections in humans and animals. Human cryptosporidiosis in China is exemplified by the high diversity of Cryptosporidium spp. at species and subtype levels, with dominant C. hominis and C. parvum subtypes being rarely detected in other countries. Similarly, preweaned dairy calves, lambs, and goat kids are mostly infected with non-pathogenic Cryptosporidium species (C. bovis in calves and C. xiaoi in lambs and goat kids), with C. parvum starting to appear in dairy calves as a consequence of concentrated animal feeding operations. The latter Cryptosporidium species is dominated by IId subtypes, with IIa subtypes largely absent from the country. Unlike elsewhere, rodents in China appear to be commonly infected with C. parvum IId subtypes, with identical subtypes being found in these animals, calves, other livestock, and humans. In addition to cattle, pigs and chickens appear to be significant contributors to Cryptosporidium contamination in drinking water sources, as reflected by the frequent detection of C. suis, C. baileyi, and C. meleagridis in water samples. Chinese scientists have also made significant contributions to the development of new molecular epidemiological tools for Cryptosporidium spp. and improvements in our understanding of the mechanism involved in the emergence of hyper-transmissible and virulent C. hominis and C. parvum subtypes. Despite this progress, coordinated research efforts should be made to address changes in Cryptosporidium transmission because of rapid economic development in China and to prevent the introduction and spread of virulent and zoonotic Cryptosporidium species and subtypes in farm animals.

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Identification and characterization of a Chinese isolate of Cryptosporidium serpentis from dairy cattle

Cited by 18 publications

References 35 publications

Molecular characterization of Cryptosporidium spp. in pre-weaned calves in Shaanxi Province, north-western China

Molecular characterization of Cryptosporidium spp. in pre-weaned calves in Shaanxi Province, north-western China

Public health significance of zoonotic Cryptosporidium species in wildlife: Critical insights into better drinking water management

Molecular Epidemiology of Cryptosporidiosis in China

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