Analysis of Risk Factors Associated with the Prevalence of Escherichia coli-H7 in Bovines from Namakkal Region, Tamil Nadu

Authors

  • Dhivya Praba Ramasamy Abimanyu R.A., M.V.Sc. Scholar, Department of Veterinary Public Health and Epidemiology, Veterinary College and Research Institute, TANUVAS, Namakkal-637002, Tamil Nadu, India.
  • Saravanan Subramanian Department of Veterinary Public Health and Epidemiology, Veterinary College and Research Institute, Tamil Nadu Veterinary and Animal Sciences University, Namakkal-637002, India
  • Selvaraju Ganapathy Department of Veterinary Public Health and Epidemiology, Veterinary College and Research Institute, Tamil Nadu Veterinary and Animal Sciences University, Namakkal-637002, India
  • Balasubramaniam Annamalai Department of Veterinary Microbiology, Veterinary College and Research Institute, Tamil Nadu Veterinary and Animal Sciences University, Namakkal-637002, India

DOI:

https://doi.org/10.48165/ijvsbt.22.3.16

Keywords:

Bovine, E. coli-H7, Prevalence, Risk factors and Relative risk

Abstract

The cattle serve as major reservoirs for Escherichia coli thereby facilitating zoonotic transmission. In this study, prevalence and epidemiological risk factors associated with E. coli-H7 in bovine faeces from Namakkal region were investigated. Rectal swabs were collected from 100 bovines between January and July 2025 and the bacteria were detected using polymerase chain reaction. Host and management risk factors were evaluated using Chi-square and logistic regression analysis, and forest tree analysis of Relative Risk (RR). The prevalence of E. coli-H7 was 12.0%. The prevalence with RR of E. coli-H7 was higher in Sahiwal breed (100%, 6.52) and older farms (18.18%, 4.09). However, statistically there was no significant difference (p>0.05) in the prevalence and the causal association with respect to all factors (p>0.05). The findings highlight the potential risk posed by bovines and underscore the necessity of farm management protocols to prevent the zoonotic spill over.

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Published

2026-04-17

Issue

Vol. 22 No. 3 (2026): The Indian Journal of Veterinary Sciences and Biotechnology (IJVSBT) (May-Jun) 2026

Section

Research Article

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Copyright (c) 2026 Indian Journal of Veterinary Sciences and Biotechnology

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How to Cite

Ramasamy Abimanyu, D. P., Subramanian, S., Ganapathy, S., & Annamalai, B. (2026). Analysis of Risk Factors Associated with the Prevalence of Escherichia coli-H7 in Bovines from Namakkal Region, Tamil Nadu . Indian Journal of Veterinary Sciences and Biotechnology, 22(3), 83-87. https://doi.org/10.48165/ijvsbt.22.3.16