ArticlePreventive veterinary medicine2015
Cryptosporidium parvum infection and associated risk factors in dairy calves in western France.
Article in Preventive veterinary medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.
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Who cites it
30 citing papers in PubMed, 1 synthesis or guideline pooled it, 66 citations in OpenAlex.
- Invited review: A systematic review of the effects of early separation on dairy cow and calf health.Journal of dairy science · 2019Pooled it
- Prevalence of cryptosporidiosis and other enteric pathogens in calves in France: effects of rotavirus, coronavirus and E. coli vaccination and transmission routes.Veterinary research · 2026Article
- Management-associated herd-level risk factors for cryptosporidiosis in dairy calves in Finland.Frontiers in parasitology · 2026Article
- In Vitro Inhibition ofPathogens (Basel, Switzerland) · 2025Article
- Point-of-Care Diagnosis of Cryptosporidiosis in Neonatal Ruminant Faecal Samples by a Portable Field Microscope Integrated With a Smartphone.Veterinary medicine and science · 2025Article
- Molecular pathogenesis of Cryptosporidium and advancements in therapeutic interventions.Parasite (Paris, France) · 2025Review
- Prevalence ofInternational journal of veterinary science and medicine · 2025Article
- Article
- Effect of Dietary Supplementation of Chestnut and Quebracho Tannin Supplementation on Neonatal Diarrhoea in Preweaning Calves.Antioxidants (Basel, Switzerland) · 2024Article
- Diagnosis and control of cryptosporidiosis in farm animals.Journal of parasitic diseases : official organ of the Indian Society for Parasitology · 2022Review
- Evaluation of a novel multiplex qPCR method for rapid detection and quantification of pathogens associated with calf diarrhoea.Journal of applied microbiology · 2022Article
- Cross-Border Investigations on the Prevalence and Transmission Dynamics ofMicroorganisms · 2021Article
- Assessment of Influential Factors for Scours Associated withAnimals : an open access journal from MDPI · 2021Article
- In Silico Identification and Functional Characterization of Conserved miRNAs in the Genome ofBioinformatics and biology insights · 2021Article
- Design of a High-Throughput Real-Time PCR System for Detection of Bovine Respiratory and Enteric Pathogens.Frontiers in veterinary science · 2021Article
- Article
- Cryptosporidium parvum as a risk factor of diarrhea occurrence in neonatal alpacas in Peru.Parasitology research · 2020Article
- Asymptomatic Cryptosporidium infections in ewes and lambs are a source of environmental contamination with zoonotic genotypes of Cryptosporidium parvum.Parasite (Paris, France) · 2020Article
- Molecular characterization of Cryptosporidium isolates from diarrheal dairy calves in France.Veterinary parasitology, regional studies and reports · 2019Article
- Biosecurity practices in Belgian veal calf farming: Level of implementation, attitudes, strengths, weaknesses and constraints.Preventive veterinary medicine · 2019Article
Corrections and comments
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Authors and funding
6 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This study was conducted to determine the prevalence and risk factors for Cryptosporidium infection in calf neonates on dairy farms in Normandy. Fecal samples were randomly collected between July 2010 and September 2011 from 968 calves (7-21 days old) on 97 farms. Up to 10 calves were selected and sampled per farm, and feces examined for oocysts by microscopy. C. parvum oocyst shedding was scored semi-quantitatively (0-5). A questionnaire about calf-level care and management was completed, and mortality rates were obtained from the French national registration database (BDNI). Bivariable and multivariable analyses of potential risk factors for C. parvum oocyst shedding were conducted using generalized estimating equation (GEE) models (family=Binomial).Overall, 402 out of 968 calves (41.5%) were positive for oocysts, and 25.1% of animals had a shedding score >2. Seven of the 97 farms (7%) were negative for oocysts in all fecal samples. At the time of collection, 375 calves (39%) had diarrhea, and its prevalence strongly correlated with the score for C. parvum oocyst shedding (p<0.0001). The mortality rate at 90 days was significantly greater for calves with high combined scores of diarrhea and shedding. Factors associated with the shedding of C. parvum were the Normande breed (odds ratio=1.49; 95% confidence interval (CI): 0.93-2.37), dispensing of colostrum using a bucket (odds ratio=1.37; 95% CI: 1.00-1.89), treatment with halofuginone (odds ratio=0.46; 95% CI: 0.19-1.15) and feeding with fermented milk (odds ratio=0.32; 95% CI: 0.17-0.63). C. parvum is widespread among calves under 21 days old in dairy herds of western France. Shedding of C. parvum is associated with a high incidence of diarrhea and increased risk of mortality in young calves. This study identified some associated calf-level factors, although further investigations are necessary to determine appropriate measures that farmers and veterinary practitioners should take to reduce the prevalence of C. parvum.
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