ArticleVeterinary research2015
Calves shedding Mycobacterium avium subspecies paratuberculosis are common on infected dairy farms.
Article in Veterinary research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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Who cites it
16 citing papers in PubMed, 37 citations in OpenAlex.
- Risk factors associated with Johne's disease in a captive wood bison herd.The Canadian veterinary journal = La revue veterinaire canadienne · 2025Article
- Lining the small intestine with mycobacteriophages protects fromProceedings of the National Academy of Sciences of the United States of America · 2024Article
- Faecal microbial diversity in a cattle herd infected by Mycobacterium avium subsp. paratuberculosis: a possible effect of production status.World journal of microbiology & biotechnology · 2024Article
- Performance of immunohistochemistry versus real-time PCR method for detecting mycobacterial infections of cattle screened by comparative tuberculin test.Veterinary research forum : an international quarterly journal · 2022Article
- Predicting Positive ELISA Results in Dairy Herds with a Preferred Status in a Paratuberculosis Control Program.Animals : an open access journal from MDPI · 2022Article
- A Novel Real-Time PCR-Based Screening Test with Pooled Fecal Samples for Bovine Johne's Disease.Journal of clinical microbiology · 2020Article
- Regional Dichotomy in Enteric Mucosal Immune Responses to a PersistentFrontiers in immunology · 2020Article
- Is the transmission of Mycobacterium avium subspecies paratuberculosis (MAP) infection through milk intended to feed calves an overlooked item in paratuberculosis control programs?Tropical animal health and production · 2020Article
- Quantifying transmission of Mycobacterium avium subsp. paratuberculosis among group-housed dairy calves.Veterinary research · 2019Article
- ISMapVeterinary world · 2018Article
- Fecal shedding and tissue infections demonstrate transmission of Mycobacterium avium subsp. paratuberculosis in group-housed dairy calves.Veterinary research · 2017Article
- Experimental infection withThe Canadian veterinary journal = La revue veterinaire canadienne · 2017Article
- Paratuberculosis in buffaloes in Northeast Brazil.Tropical animal health and production · 2016Article
- Detection of Mycobacterium avium subspecies paratuberculosis in tie-stall dairy herds using a standardized environmental sampling technique and targeted pooled samples.Canadian journal of veterinary research = Revue canadienne de recherche veterinaire · 2016Article
- The isolation and molecular characterization of Mycobacterium avium subsp. paratuberculosis in Shandong province, China.Gut pathogens · 2016Article
- Within- and between-host mathematical modeling of Mycobacterium avium subspecies paratuberculosis (MAP) infections as a tool to study the dynamics of host-pathogen interactions in bovine paratuberculosis.Veterinary research · 2015Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Mycobacterium avium subspecies paratuberculosis (MAP) causes Johne's disease, a chronic progressive enteritis. It is generally assumed that calves rarely shed MAP bacteria and that calf-to-calf transmission is of minor importance. The objectives were 1) to estimate the prevalence of MAP-shedding young stock in MAP-infected dairy herds, and identify predictors for test-positive young stock; and 2) to estimate proportions of MAP-contaminated young stock group housing pens and air spaces, and furthermore, identify predictors for test-positive pens. Fecal samples were collected from 2606 young stock on 18 MAP-infected dairy farms. Environmental fecal samples were collected from all group-housing pens and dust samples were collected from all barns. All individual samples were analysed using IS900 and F57 qPCR; fecal samples positive by either PCR and all environmental and dust samples were cultured. Overall, 8.1, 1.2 and 2.0% of cattle were positive on IS900 qPCR, F57 qPCR and bacterial culture, respectively. Young stock housed on farms with culture-positive environmental samples collected from adult cow housing and manure storage had higher odds of testing IS900 qPCR-positive than young stock housed on farms with only negative environmental samples. Furthermore, 14% of collected environmental samples, but no dust samples, were test-positive. Age of cattle in the pen was a significant predictor for environmental sample results. Young stock excreted MAP bacteria in their feces which provided strong evidence for calves as sources of within-herd transmission of MAP on dairy farms known to be infected with this organism.
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