We investigated the efficiency of residual ozone from an advanced water treatment plant with an applied dose of 2.5 mg l(-1) to inactivate viable Cryptosporidium oocysts during summer (i.e. 24 degrees C) and winter (i.e. 18.9 degrees C) in Queensland, Australia. Containers for sample collection were inoculated with 1,000 oocysts l(-1) and filled with ozonated water. Ozone residual concentration...

CE Email comments/questions to [email protected], fax 800-556-3288, or log on to www.VetLearn.com Cryptosporidiosis was recognized as an important zoonosis in the early 1980s. Early studies assumed that all infections in mammals, including humans, were caused by the parasite Cryptosporidium parvum. Recent studies using molecular biologic tools and hostspecificity studies indicate that ca...

BACKGROUND Despite their wide occurrence, cryptosporidiosis and giardiasis are considered neglected diseases by the World Health Organization. The epidemiology of these diseases and microsporidiosis in humans in developing countries is poorly understood. The high concentration of pathogens in raw sewage makes the characterization of the transmission of these pathogens simple through the genotyp...

BACKGROUND Cryptosporidium and Giardia are the two important zoonotic pathogens causing diarrhea of humans and animals worldwide. Considering the human cryptosporidiosis outbreak and sporadic cases caused by C. cuniculus, the important public health significance of G. duodenalis and little obtained information regarding rabbit infected with Cryptosporidium and Giardia in China, the aim of this ...

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...

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Cryptosporidium parvum is a zoonotic protozoan parasite with a wide range of vertebrate hosts. The present study was conducted to determine the prevalence of Cryptosporidium parvum in urban and rural dogs of the Ahvaz area. Faecal samples were collected randomly from 93 dogs between May 2005 and September 2007. The studied dogs were divided into two groups (urban and rural) and based on age int...

background: cryptosporidium spp. is a coccidian parasite infected humans and animals. prevalence rate of cryptosporidium spp. infection associated with is some parameters such as sampling, age, season, country and contact to domestic animals. this study aimed to determine cryptosporidium spp. infection in humans and some animals in rural areas of shushtar district from khuzestan province, south...

Four lambs 4 months old were inoculated with Cryptosporidium andersoni oocysts (bovine isolate) in a dose of 5 x 10(6) per animal followed later by 1 x 10(7) oocysts per animal. No animal shed Cryptosporidium oocysts during 56 days post infection, no lamb showed clinical symptoms of cryptosporidiosis and no macroscopic changes were detected in the abomasum immediately after autopsy. Histologica...