نتایج جستجو برای: cryptosporidium infection
تعداد نتایج: 459384 فیلتر نتایج به سال:
The protozoan intestinal parasite Cryptosporidium commonly infects cattle throughout the world and Iran. The present study was undertaken to determine the abundance and associated risk factors of Cryptosporidium infection in cattle herds of northwestern Iran. A total number of 246 fecal samples from 138 (56.1%) diarrheic (D) and 108 (43.9%) non-diarrheic (ND) cattle were randomly collected and ...
Background: Cryptosporidium is a protozoan parasite with worldwide distribution mainly affecting children and HIV infected individuals with low CD4 counts. The infection is self limiting in immunocompetent hosts but can be severe and persist in the immunocompromised and malnourished individuals. The aim of this study was to estimate the prevalence of Cryptosporidium infection in faeces among im...
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 infection, or cryptosporidiosis, was first described in mice by Ernest Tyzzer in 1907, yet infection of humans went unrecognized until 1976 [1,2]. The emergence of HIV brought human cryptosporidiosis to the fore, in the 1980s, as a chronic and life threatening opportunistic infection. Most recently, a series of epidemiological studies have revealed the truly ubiquitous nature of...
BACKGROUND Cryptosporidiosis is a common cause of infectious diarrhea in young children worldwide, and is a significant contributor to under-five mortality. Current treatment options are limited in young children. In this study, we describe the natural history of Cryptosporidium spp. infection in a birth cohort of children in Bangladesh and evaluate for association with malnutrition. METHODOL...
BACKGROUND Cryptosporidium is a leading cause of moderate to severe childhood diarrhea in resource-poor settings. Understanding the natural history of cryptosporidiosis and the correlates of protection are essential to develop effective and sustainable approaches to disease control and prevention. METHODS Children (N = 497) were recruited at birth in semiurban slums in Vellore, India, and fol...
Cryptosporidium parvum is usually considered to be the pathogen responsible for human cryptosporidiosis. We genotyped Cryptosporidium in 132 stool specimens from 80 Peruvian children, representing 85 infection episodes, using techniques that differentiate Cryptosporidium species and C. parvum genotypes. Five types of Cryptosporidium were identified: C. parvum human (67), bovine (8), and dog (2)...
Although pigs are commonly infected with Cryptosporidium spp. and Giardia duodenalis, including potentially zoonotic species or genotypes, little is known about age-related infection levels, seasonal differences and genetic variation in naturally infected pigs raised in organic management systems. Therefore, the current study was conducted to assess seasonal and age-related variations in preval...
Persistent infection was established in SCID mice given 10(7) Cryptosporidium parvum oocysts. Nine groups of infected SCID mice were inoculated with 10(6), 10(5), or 10(4) total spleen cells, CD8-depleted spleen cells, or CD4-depleted spleen cells from naive BALB/c donors. Infection was significantly reduced in all treatment groups. The most profound effect occurred with spleen cell preparation...
Cryptosporidium parvum is a zoonotic protozoan parasite that causes cryptosporidial enteritis. Numerous outbreaks of cryptosporidiosis have been reported worldwide. Cryptosporidium is transmitted to hosts via consumption of contaminated water and food but also by direct contact with contaminated soil or infected hosts. The present study investigated farm soil collected from 34 locations along t...
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