Prevalence of porcine circovirus 2 throughout China in 2015-2019: A systematic review and meta-analysis

Liu, Y. and Gong, Q. L. and Nie, L. B. and Wang, Q. and Ge, G. Y. and Li, D. L. and Ma, B. Y. and Sheng, C. Y. and Su, N. and Zong, Y. and Li, J. M. and Shi, K. and Leng, X. and Du, R.

Microb Pathog (2020) 149: 104490

DOI: 10.1016/j.micpath.2020.104490

Abstract

Porcine circovirus type 2 (PCV2) causes infectious diseases in pigs leading to considerable economic losses in the pig industry. To prevent and control PCV2 infections, is important to understand the prevalence and geographical distribution of the virus. We performed the first systematic review and meta-analysis to estimate the prevalence of PCV2 in China. From PubMed, ScienceDirect, Chinese Web of Knowledge, Wanfang, and VIP Chinese Journal, we extracted 53 studies published in China between 2015 and 2019. There were 29,051 samples, 14,230 of which were positive for PCV2. The pooled prevalence of PCV2 was 46.0%, with the highest in Northeastern China (58.1%). The highest prevalence was 86.3% in Xinjiang province. Nursery pigs had the highest prevalence of PCV2 (50.9%), and the serological test detected the highest number of cases (58.5%). PCV2 prevalence was 50.1% in intensive farms and 37.5% in extensive farms. Our findings showed that PCV2 is common throughout China. Effective control measures are necessary to reduce PCV2 infections.

Citation

Liu, Y., Gong, Q. L., Nie, L. B., Wang, Q., Ge, G. Y., Li, D. L., Ma, B. Y., Sheng, C. Y., Su, N., Zong, Y., Li, J. M., Shi, K., Leng, X., & Du, R. (2020). Prevalence of porcine circovirus 2 throughout China in 2015-2019: A systematic review and meta-analysis. Microb Pathog, 149, 104490. https://doi.org/10.1016/j.micpath.2020.104490 China, Pigs, Prevalence, Porcine circovirus type 2, Meta-analysis

Keywords

• China
• Pigs
• Prevalence
• Porcine circovirus type 2
• Meta-analysis