نتایج جستجو برای: cryptosporidium xiaoi
تعداد نتایج: 4673 فیلتر نتایج به سال:
Molecular and biological characteristics of a new species of Cryptosporidium from the feces of pigs (Sus scrofa) is described. Oocysts are structurally indistinguishable from those of Cryptosporidium parvum; they are passed fully sporulated, lack sporocysts, and measure 4.9-4.4 microm (mean = 4.6 microm) x 4.0-4.3 microm (mean = 4.2 microm); length to width ratio 1.1 (n = 50). Cryptosporidium s...
Background: Cryptosporidiosis is prevalent in animals and human beings, both immuno-competent and immuno-compromised persons, worldwide. Epidemiologically, it is important to differentiate between human and animal species. The aim of this study is to define the utility of a 1055 bp fragment of 18s rRNA for differentiation of Human and Cattle Cryptosporidiosis. Material and methods: 1020 human...
Fifteen dairy farms in seven states on the east coast of the US were each visited on two consecutive years to determinate the prevalence of Cryptosporidium species in pre-weaned (5 days to 2 months) and post-weaned calves (3-11 months), respectively. After each of 971 fecal specimens collected directly from each calf was sieved and subjected to density gradient centrifugation to remove debris a...
Cryptosporidiosis is a clinical disease, usually presenting as a gastro-enteritis-like syndrome, caused by infection with protozoan parasites of the Apicomplexan genus Cryptosporidium. Disease ranges in seriousness from mild to severe and signs and symptoms depend on the site of infection and nutritional and immune status of the host Cryptosporidium in vitro was first achieved in endodermal cel...
Cryptosporidium is one of the most important parasites in poultry, and this pathogen can infect more than 30 avian species. The present study investigated the infection rate of Cryptosporidium among broiler chicken flocks. A total of 385 fecal samples from broiler chickens in 7 regions of Zhejiang Province collected from November 2010 to January 2012 were examined by microscopy. Thirty-eight (1...
BACKGROUND The importance of Cryptosporidium as a pediatric enteropathogen in developing countries is recognized. METHODS Data from the Global Enteric Multicenter Study (GEMS), a 3-year, 7-site, case-control study of moderate-to-severe diarrhea (MSD) and GEMS-1A (1-year study of MSD and less-severe diarrhea [LSD]) were analyzed. Stools from 12,110 MSD and 3,174 LSD cases among children aged <...
Cryptosporidium isolates identified in fourteen stool samples, collected from five HIV-infected patients and nine immunocompetent children, living in the State of São Paulo, Brazil, were submitted to a molecular analysis using a nested PCR followed of restriction fragment length polymorphism (RFLP), for genetic characterization. The analysis was based on digestion with RsaI restriction enzyme o...
A survey on the presence of Cryptosporidium oocyst and Giardia cyst in livestock drinking water as well as the urban tap water throughout Taiwan was carried out. Water examination for the presence of the protozoa was conducted by filtering through a PTFE membrane followed by immunomagnetic separation (IMS) and immunostaining the sediment with commercially available monoclonal antibody against C...
Cryptosporidium parvum is an important cause of diarrhea worldwide. Cryptosporidium causes a potentially life-threatening disease in people with AIDS and contributes significantly to morbidity among children in developing countries. In immunocompetent adults, Cryptosporidium is often associated with waterborne outbreaks of acute diarrheal illness. Recent studies with human volunteers have indic...
This paper summarizes the conclusions of two recently completed projects that examined the occurrence of the protozoan pathogen Cryptosporidium in wastewater streams, and the efficacy of ultraviolet (UV) light for treatment of wastewaters to control Cryptosporidium. A 15-month survey of Cryptosporidium oocyst occurrence was conducted at ten US wastewater treatment plants. Cryptosporidium oocyst...
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