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Home / Equine Research Bank / J Clin Microbiol / Quantitative aspects of fecal Rhodococcus (Corynebacterium) ...
Journal of clinical microbiology1986; 23(4); 794-796; doi: 10.1128/jcm.23.4.794-796.1986

Quantitative aspects of fecal Rhodococcus (Corynebacterium) equi in foals.

Abstract: Quantitative aspects of fecal Rhodococcus (Corynebacterium) equi in newborn foals for 12 weeks after birth were investigated on two horse breeding farms. R. equi was found in the feces of foals during week 1 of life. The greatest numbers of R. equi were present in the feces of foals during the first 8 weeks of their lives, which coincides with the age when foals are most liable to be exposed to R. equi.
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Publication Date: 1986-04-01 PubMed ID: 3700632PubMed Central: PMC362841DOI: 10.1128/jcm.23.4.794-796.1986Google Scholar: Lookup
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  • Non-U.S. Gov't

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

This research investigates the presence and quantity of a bacterium, Rhodococcus equi, in the feces of newborn foals. The study finds that the greatest quantities of this bacterium are present within the first eight weeks of life, which is also when foals are at most risk of exposure.

Objective and Setting

  • The study aims to understand the quantitative aspects of the bacterium Rhodococcus equi present in the feces of newborn foals.
  • The study was conducted on two horse breeding farms over a span of 12 weeks from birth.
  • The bacterium Rhodococcus equi can cause infections in foals and is commonly found in the environment, especially in the soil at horse breeding farms.

Findings

  • The research found that right from week 1 of their life, these foals had the bacterium in their feces.
  • Notably, the highest quantities of Rhodococcus equi were present in the foals’ feces during the first 8 weeks of their lives. This overlap with the period when foals are most susceptible to exposure to R. equi.

Implications

  • These findings underscore the importance of monitoring and managing the bacterial load in the environment, especially in the early weeks of a foal’s life to prevent infection.
  • This research can inform strategies for early detection and prevention of R. equi infections in foals by effectively limiting their exposure at the most susceptible stage.
  • Moreover, more studies and interventions might be needed to fully understand and control the transmission of this bacterium among foals.

Cite This Article

APA
Takai S, Ohkura H, Watanabe Y, Tsubaki S. (1986). Quantitative aspects of fecal Rhodococcus (Corynebacterium) equi in foals. J Clin Microbiol, 23(4), 794-796. https://doi.org/10.1128/jcm.23.4.794-796.1986

Publication

Journal of clinical microbiology
ISSN: 0095-1137
NlmUniqueID: 7505564
Country: United States
Language: English
Volume: 23
Issue: 4
Pages: 794-796

Researcher Affiliations

Takai, S
    Ohkura, H
      Watanabe, Y
        Tsubaki, S

          MeSH Terms

          • Age Factors
          • Animals
          • Animals, Newborn / microbiology
          • Coprophagia
          • Corynebacterium / isolation & purification
          • Feces / microbiology
          • Female
          • Horses / microbiology
          • Male
          • Soil Microbiology

          References

          This article includes 20 references
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          Citations

          This article has been cited 11 times.
          1. Cohen ND, Kahn SK, Bordin AI, Gonzales GM, da Silveira BP, Bray JM, Legere RM, Ramirez-Cortez SC. Association of pneumonia with concentrations of virulent Rhodococcus equi in fecal swabs of foals before and after intrabronchial infection with virulent R. equi.. J Vet Intern Med 2022 May;36(3):1139-1145.
            doi: 10.1111/jvim.16409pubmed: 35322902google scholar: lookup
          2. Madrigal RG, Shaw SD, Witkowski LA, Sisson BE, Blodgett GP, Chaffin MK, Cohen ND. Use of Serial Quantitative PCR of the vapA Gene of Rhodococcus equi in Feces for Early Detection of R. equi Pneumonia in Foals.. J Vet Intern Med 2016 Mar-Apr;30(2):664-70.
            doi: 10.1111/jvim.13828pubmed: 26806422google scholar: lookup
          3. Shaw SD, Cohen ND, Chaffin MK, Blodgett GP, Syndergaard M, Hurych D. Estimating the Sensitivity and Specificity of Real-Time Quantitative PCR of Fecal Samples for Diagnosis of Rhodococcus equi Pneumonia in Foals.. J Vet Intern Med 2015 Nov-Dec;29(6):1712-7.
            doi: 10.1111/jvim.13631pubmed: 26436545google scholar: lookup
          4. Kuskie KR, Smith JL, Wang N, Carter CN, Chaffin MK, Slovis NM, Stepusin RS, Cattoi AE, Takai S, Cohen ND. Effects of location for collection of air samples on a farm and time of day of sample collection on airborne concentrations of virulent Rhodococcus equi at two horse breeding farms.. Am J Vet Res 2011 Jan;72(1):73-9.
            doi: 10.2460/ajvr.72.1.73pubmed: 21194338google scholar: lookup
          5. Prescott JF, Machang'u R, Kwiecien J, Delaney K. Prevention of foal mortality due to Rhodococcus equi pneumonia on an endemically affected farm.. Can Vet J 1989 Nov;30(11):871-5.
            pubmed: 17423454
          6. Takai S, Kawazu S, Tsubaki S. Immunoglobulin and specific antibody responses to Rhodococcus (Corynebacterium) equi infection in foals as measured by enzyme-linked immunosorbent assay.. J Clin Microbiol 1986 May;23(5):943-7.
            doi: 10.1128/jcm.23.5.943-947.1986pubmed: 3711280google scholar: lookup
          7. Chirino-Trejo JM, Prescott JF, Yager JA. Protection of foals against experimental Rhodococcus equi pneumonia by oral immunization.. Can J Vet Res 1987 Oct;51(4):444-7.
            pubmed: 3453264
          8. Prescott JF. Rhodococcus equi: an animal and human pathogen.. Clin Microbiol Rev 1991 Jan;4(1):20-34.
            doi: 10.1128/CMR.4.1.20pubmed: 2004346google scholar: lookup
          9. Takai S, Sekizaki T, Ozawa T, Sugawara T, Watanabe Y, Tsubaki S. Association between a large plasmid and 15- to 17-kilodalton antigens in virulent Rhodococcus equi.. Infect Immun 1991 Nov;59(11):4056-60.
            doi: 10.1128/iai.59.11.4056-4060.1991pubmed: 1937765google scholar: lookup
          10. Takai S, Ohbushi S, Koike K, Tsubaki S, Oishi H, Kamada M. Prevalence of virulent Rhodococcus equi in isolates from soil and feces of horses from horse-breeding farms with and without endemic infections.. J Clin Microbiol 1991 Dec;29(12):2887-9.
            doi: 10.1128/jcm.29.12.2887-2889.1991pubmed: 1757567google scholar: lookup
          11. Takai S, Iie M, Watanabe Y, Tsubaki S, Sekizaki T. Virulence-associated 15- to 17-kilodalton antigens in Rhodococcus equi: temperature-dependent expression and location of the antigens.. Infect Immun 1992 Jul;60(7):2995-7.
            doi: 10.1128/iai.60.7.2995-2997.1992pubmed: 1612765google scholar: lookup
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