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<p>This study investigates the abundance of <i>Theileria orientalis</i> and its correlation with climatic factors in Wayanad, Kerala, India, through a retrospective analysis of clinical cases from January 2021 to December 2023. Data from local veterinary facilities were analysed alongside biometeorological parameters, including temperature, relative humidity (RH), and rainfall, sourced from the College of Agriculture, Ambalavayal. Over a thousand cases of oriental theileriosis were recorded, with a significant positive correlation between the abundance of the infection and minimum and average temperatures, suggesting that warmer conditions favored the infection. Conversely, RH in the second lag period showed a significant negative correlation with the infection abundance, indicating that higher humidity may suppress vector activity. No significant correlations were observed for other climatic factors or lag periods. These findings underscore the climatic influence on <i>T. orientalis</i> dynamics and highlight the importance of incorporating temperature and humidity into surveillance and control strategies to reduce the infection burden in affected regions.</p>

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Climatic influences on the abundance of Theileria orientalis: a retrospective study

  • 期刊论文

  • 发表日期：

    2026年3月23日

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  • S. Vaisakhi Vikraman,
  • P. M. Deepa,
  • R. L. Rathish,
  • A. Janus,
  • R. Rajasekhar

摘要

This study investigates the abundance of Theileria orientalis and its correlation with climatic factors in Wayanad, Kerala, India, through a retrospective analysis of clinical cases from January 2021 to December 2023. Data from local veterinary facilities were analysed alongside biometeorological parameters, including temperature, relative humidity (RH), and rainfall, sourced from the College of Agriculture, Ambalavayal. Over a thousand cases of oriental theileriosis were recorded, with a significant positive correlation between the abundance of the infection and minimum and average temperatures, suggesting that warmer conditions favored the infection. Conversely, RH in the second lag period showed a significant negative correlation with the infection abundance, indicating that higher humidity may suppress vector activity. No significant correlations were observed for other climatic factors or lag periods. These findings underscore the climatic influence on T. orientalis dynamics and highlight the importance of incorporating temperature and humidity into surveillance and control strategies to reduce the infection burden in affected regions.