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<p>Cystic echinococcosis (CE) is a significant zoonotic infection caused by the larval stage of <i>Echinococcus granulosus sensu lato</i>, and it is a serious public health problem in Türkiye. The study aims to determine the current prevalence of bovine CE in Erzurum, to identify its molecular genotypes, and to analyze long-term trends in infection prevalence. A total of 1,241 slaughtered cattle were examined, and the CE prevalence was 24.09% (299/1,241). The lungs were the most frequently infected organ, with a rate of 93.31% (<i>p</i> &lt; 0.05). The study revealed that the highest infection rates were observed in cattle over 5 years of age and in females (<i>p</i> &lt; 0.05). The vast majority of infected cattle exhibited single cysts (73.24%) (<i>p</i> &lt; 0.05), with cyst diameters ranging from 1 to 15&#xa0;cm. Medium-sized cysts (2–5&#xa0;cm) were predominant in 73.06% of cases (<i>p</i> &lt; 0.05). Microscopic examinations revealed that the fertility rate of cysts was 9.25%. Cyst fertility significantly increased with cyst size (<i>p</i> &lt; 0.05). A molecular analysis of 105 selected cyst samples targeting the 12&#xa0;S rRNA and COI gene regions identified all isolates as <i>E. granulosus sensu stricto</i>. The epidemiological data from the last thirty years demonstrate a decrease in the prevalence rate of approximately 10% per decade in the region, with a decline from 46.4% to 24.09%. Consequently, in order to maintain the current downward trend in prevalence observed in CE endemic regions and to minimize public health risks, it is crucial to implement comprehensive control programs based on a ‘One Health’ approach and to continue periodic epidemiological studies to monitor the parasite’s status in hosts.</p>

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Epidemiological study on bovine cystic echinococcosis in an endemic focus of Türkiye: ten-year trends, abattoir surveillance, and molecular characterization

  • 期刊论文

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  • 发表日期：

    2026年7月27日

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  • Ridvan Kirman,
  • Muzaffer Akyuz,
  • Mohammed Mebarek Bia,
  • Ibrahim Balkaya,
  • Esin Guven,
  • Hamza Avcioglu

摘要

Cystic echinococcosis (CE) is a significant zoonotic infection caused by the larval stage of Echinococcus granulosus sensu lato, and it is a serious public health problem in Türkiye. The study aims to determine the current prevalence of bovine CE in Erzurum, to identify its molecular genotypes, and to analyze long-term trends in infection prevalence. A total of 1,241 slaughtered cattle were examined, and the CE prevalence was 24.09% (299/1,241). The lungs were the most frequently infected organ, with a rate of 93.31% (p < 0.05). The study revealed that the highest infection rates were observed in cattle over 5 years of age and in females (p < 0.05). The vast majority of infected cattle exhibited single cysts (73.24%) (p < 0.05), with cyst diameters ranging from 1 to 15 cm. Medium-sized cysts (2–5 cm) were predominant in 73.06% of cases (p < 0.05). Microscopic examinations revealed that the fertility rate of cysts was 9.25%. Cyst fertility significantly increased with cyst size (p < 0.05). A molecular analysis of 105 selected cyst samples targeting the 12 S rRNA and COI gene regions identified all isolates as E. granulosus sensu stricto. The epidemiological data from the last thirty years demonstrate a decrease in the prevalence rate of approximately 10% per decade in the region, with a decline from 46.4% to 24.09%. Consequently, in order to maintain the current downward trend in prevalence observed in CE endemic regions and to minimize public health risks, it is crucial to implement comprehensive control programs based on a ‘One Health’ approach and to continue periodic epidemiological studies to monitor the parasite’s status in hosts.