Veterinary World (Dec 2024)

Herd-level seroprevalence, molecular prevalence, and trends of Coxiella burnetii (Q fever) in cattle worldwide: A systematic review and meta-analysis

  • Adithep Konputtar,
  • Nguyen Hoai Nam,
  • Sarinya Rerkyusuke,
  • Chaiyapas Thamrongyoswittayakul,
  • Suvaluk Seesupa,
  • Montira Yossapol,
  • Peerapol Sukon

DOI
https://doi.org/10.14202/vetworld.2024.2811-2828
Journal volume & issue
Vol. 17, no. 12
pp. 2811 – 2828

Abstract

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Materials and Methods: Relevant studies were retrieved from PubMed, Scopus, and Web of Science and then screened for possible inclusion. A random-effects model was used for all meta-analyses. Subgroup meta-analysis and meta-regression were used to explore some sources of heterogeneity associated with the pooled prevalence and to determine the trends of C. burnetii in cattle herds over the study years (1961–2020). A cumulative meta-analysis was used to determine the cumulative evidence of the pooled prevalence over the publication years. Results: Of the 1541 citations, 86 studies with 38,057 cattle herds from 42 countries on six continents were included in the meta-analysis. The global herd-level seroprevalence of C. burnetii in cattle was estimated to be 44.4% (95% confidence interval [CI], 37.9%–51.1%), with high heterogeneity among the included studies. The herd-level seroprevalence was significantly higher in dairy than in beef cattle herds (49.0% [95% CI: 41.9%–56.2%] vs. 14.5% [95% CI: 5.8%–32.1%], respectively). The global herd-level molecular prevalence of C. burnetii in cattle was estimated to be 32.3% (95% CI: 25.3%–40.01%), with high heterogeneity among the included studies. Herd-level molecular prevalence was significantly different among continents. The herd-level molecular prevalence ranged from 12.8% (95% CI: 7.1%–21.9%) in Asia to 70.0% (95% CI: 36.3%–90.5%) in North America. Regarding trends, the herd-level seroprevalence of C. burnetii in cattle did not change significantly over the study years. Conclusion: The global herd-level seroprevalence and herd-level molecular prevalence of C. burnetii in cattle were high, estimated at 44% and 32%, respectively. The herd-level seroprevalence trend did not significantly change over time. This result indicates that cattle remain a major reservoir host for C. burnetii and pose a potential risk to human health.

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