ArticleVeterinary parasitology2019
Infection dynamics of Cryptosporidium bovis and Cryptosporidium ryanae in a Swedish dairy herd.
Article in Veterinary parasitology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Seroprevalence and risk factors associated with calves' cryptosporidiosis in Egypt.BMC veterinary research · 2026Article
- Investigation of Cryptosporidium infection in a broad range of hosts in northern China.Parasites & vectors · 2025Article
- Detection and molecular characterization of major enteric pathogens in calves in central Ethiopia.BMC veterinary research · 2024Article
- Article
- Cryptosporidium infections in asymptomatic calves up to 4 months in Poland: a cross-sectional population study.Scientific reports · 2023Article
- First report ofFrontiers in veterinary science · 2023Article
- Molecular Detection and Distribution ofTransboundary and emerging diseases · 2023Article
- Epidemiological and Molecular Study ofAnimals : an open access journal from MDPI · 2022Article
- Cross-Border Investigations on the Prevalence and Transmission Dynamics ofMicroorganisms · 2021Article
- Development and Application of aMicroorganisms · 2021Article
- Cryptosporidium parvum, Cryptosporidium ryanae, and Cryptosporidium bovis in samples from calves in Austria.Parasitology research · 2020Article
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4 authors.
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Abstract
In order to investigate the infection dynamics of Cryptosporidium bovis and Cryptosporidium ryanae, a Swedish dairy farm known to be free of C. parvum was recruited for a one-year study. Fecal samples were collected every four weeks (a total of 13 occasions) from 20 randomly selected calves younger than 65 days. A total of 238 feces samples were collected directly from the rectum and then examined with immunofluorescence microscopy; those positive for Cryptosporidium spp. oocysts were further processed by molecular species determination. Oocysts were found in 92 samples, and in 72 of these the species was successfully determined: 87.5% C. bovis, 9.7% C. ryanae and 2.8% a mix of both species. No C. parvum was found. The prevalence of shedding calves was highest at ages 4 and 5 weeks; however, the feces with the highest oocyst per gram (OPG) were registered at 2-4 weeks of age. This is earlier than what has been found in most other studies, indicating that the infection dynamics of C. bovis/C. ryanae may be affected by the presence of C. parvum. The OPG for the positive calves ranged from 200 to 1.1 × 10
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