Seroprevalence of Rhodococcus equi in horses in Israel.
Abstract: Rhodococcus equi is a common cause of pneumonia in foals and has extensive clinical, economic and possibly zoonotic consequences. This bacterium survives well in the environment and may be considered as normal flora of adult horses. Certain strains of this bacterium are extremely virulent in foals, and early identification and intervention is crucial for prognosis. Rhodococcus equi is endemic in many parts of the world and occasionally isolated in Israel. This study was designed to evaluate R. equi seroprevalence in adult horses in Israel to indirectly indicate the potential level of exposure of susceptible foals. Sera were collected from 144 horses during spring 2011 and from 293 horses during fall 2014, and the presence of antibodies against virulent R. equi was detected by enzyme-linked immunosorbent assay. Equine seroprevalence of R. equi was found to be 7.6% in 2011 and 5.1% in 2014. Only one farm had seropositive horses in 2011, whereas several farms had seropositive horses in 2014. No significant risk factors for seropositivity were found. Rhodococcus equi appears to be endemic in Israel. This is the first survey of R. equi in Israel that provides information on the epidemiology of this important bacterium.
Publication Date: 2017-06-26 PubMed ID: 28697612PubMed Central: PMC6138172DOI: 10.4102/jsava.v88i0.1508Google Scholar: Lookup
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- Journal Article
Summary
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The research article discusses a study conducted to determine the seroprevalence of Rhodococcus equi, a bacterium causing pneumonia in foals, in adult horses in Israel. The study indirectly hints at the potential exposure risk to susceptible foals and denotes the endemic presence of the bacterium in the country.
Purpose of the Research
- The primary goal of the study was to measure the seroprevalence of Rhodococcus equi in adult horses in Israel. Determining the seroprevalence allowed the researchers to evaluate the potential exposure level of susceptible foals to this bacterium.
- The bacterium can cause significant health issues in foals, including pneumonia, potentially leading to serious clinical and economic consequences. Therefore, it is essential to understand the level of exposure to initiate timely prevention and treatment measures.
Methodology of the Research
- The study collected serum from 144 horses in spring 2011 and 293 horses in fall 2014. The samples were then tested for the presence of antibodies against virulent R. equi using an enzyme-linked immunosorbent assay (ELISA).
- ELISA is a common diagnostic tool used to detect the presence of antibodies that would indicate past or present infection with the bacterium. It provides a reliable and accurate measure of seroprevalence in the horse population.
Findings of the Research
- The study found that the seroprevalence of R. equi in horses was 7.6% in 2011 and 5.1% in 2014, suggesting an ongoing presence of the bacterium in the horse population in Israel.
- The research also noted that only one farm had seropositive horses in 2011, while there were several farms with seropositive horses in 2014. This suggests an increase in the spread of the bacterium across multiple sites over the period.
- However, the study did not identify any significant risk factors for seropositivity, indicating the need for further research into the contributing factors and conditions that may favor the bacterium’s prevalence and proliferation.
Significance of the Research
- This study is the first to provide information on the epidemiology of R. equi in Israel, indicating that the bacterium appears to be endemic in the region.
- The findings underscore the important role of monitoring R. equi seroprevalence in preventing and controlling the disease that it causes, especially in foals.
Cite This Article
APA
Tirosh-Levy S, Gürbilek SE, Tel OY, Keskin O, Steinman A.
(2017).
Seroprevalence of Rhodococcus equi in horses in Israel.
J S Afr Vet Assoc, 88, e1-e6.
https://doi.org/10.4102/jsava.v88i0.1508 Publication
Researcher Affiliations
- Koret School of Veterinary Medicine, The Hebrew University of Jerusalem. sharontirosh@gmail.com.
MeSH Terms
- Actinomycetales Infections / epidemiology
- Actinomycetales Infections / veterinary
- Animals
- Antibodies, Bacterial / blood
- Female
- Horse Diseases / epidemiology
- Horses
- Israel / epidemiology
- Male
- Rhodococcus equi / immunology
- Seroepidemiologic Studies
Conflict of Interest Statement
The authors declare that they have no financial or personal relationships that may have inappropriately influenced them in writing this article.
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Citations
This article has been cited 1 times.- Nielsen SS, Bicout DJ, Calistri P, Canali E, Drewe JA, Garin-Bastuji B, Gonzales Rojas JL, Gortázar C, Herskin M, Michel V, Miranda Chueca MÁ, Padalino B, Pasquali P, Roberts HC, Spoolder H, Ståhl K, Velarde A, Viltrop A, Winckler C, Baldinelli F, Broglia A, Kohnle L, Alvarez J. Assessment of listing and categorisation of animal diseases within the framework of the Animal Health Law (Regulation (EU) No 2016/429): antimicrobial-resistant Rhodococcus equi in horses.. EFSA J 2022 Feb;20(2):e07081.
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