Prevalence of in Pigs in China from 1985 to 2020: A Systematic Review and Meta-Analysis.

Vector Borne Zoonotic Dis

Laboratory of Production and Product Application of Sika Deer of Jilin Province, Jilin Agricultural University, Changchun, P.R. China.

Published: July 2021

AI Article Synopsis

  • A systematic review and meta-analysis were conducted to assess the prevalence of a harmful gram-negative microorganism in swine in China, gathering data from 72 publications between 1985 and 2020.
  • The overall prevalence was found to be 22.48%, with a notable increase in southern China (30.97%) compared to northern China (10.79%), and the highest prevalence recorded in Hubei province (36.23%).
  • The study suggests improved detection methods in breeding pigs, particularly those with reproductive disorders, and recommends controlling environmental factors in large-scale farms to mitigate future infections.

Article Abstract

is a small gram-negative (G-) microorganism that can be dangerous to human and animals. In this study, we conducted a systematic review and meta-analysis of infection in swine in China. From PubMed, ScienceDirect, Chinese Web of knowledge (CNKI), VIP Chinese journal database, and Wanfang database, we collected a total of 72 publications reported in 1985-2020. The prevalence of was 22.48% in China. In the sampling year subgroup, the prevalence after 2011 was the highest (26.14%). In southern China, the prevalence was 30.97%. By contrast, the prevalence in northern China was only 10.79%. Also the difference was significant ( < 0.05). In the provincial level, Hubei had the highest rate of 36.23%. Boars had a higher prevalence (29.47%). The prevalence of detection in pigs with reproductive disorders (21.86%) was higher than that without reproductive disorders. Among the three age groups, finishing pigs (21.43%) had the highest prevalence. The prevalence in large-scale farmed pigs (28.58%) was the highest in the subgroup of feeding methods. The prevalence in farms was 24.29%, which was the highest in the survey areas. The prevalence in spring was the highest with 40.51%. Other methods had the highest prevalence (39.61%) than enzyme-linked immunosorbent assay (ELISA) and indirect hemagglutination assay. The prevalence of 18.41% was lower than the prevalence of (41.35%). We also analyzed the impact of different climate factor subgroups (rainfall, temperature, and humidity) on the probability of pigs suffering from the disease. The results showed that was widespread in pigs in China. We suggest that we should strengthen the detection of in the semen of breeding pigs and pigs with reproductive disorders, and reasonably control the environment of large-scale pig farms, so as to reduce further infection of in pigs.

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http://dx.doi.org/10.1089/vbz.2020.2694DOI Listing

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