Molecular Epidemiology Reveals the Co-Circulation of Two Genotypes of Coxsackievirus B5 in China

Viruses. 2022 Nov 30;14(12):2693. doi: 10.3390/v14122693.

Abstract

Coxsackievirus B5 (CVB5) is an important enterovirus B species (EV-Bs) type. We used the full-length genomic sequences of 53 viral sequences from the national hand, foot, and mouth disease surveillance network in the Chinese mainland (2001-2021). Among them, 69 entire VP1 coding region nucleotide sequences were used for CVB5 genotyping and genetic evolution analysis. Phylogenetic analysis based on a data set of 448 complete VP1 sequences showed that CVB5 could be divided into four genotypes (A-D) worldwide. Sequences from this study belonged to genotypes B and D, which dominated transmission in the Chinese mainland. Two transmission lineages of CVB5 have been discovered in the Chinese mainland, lineage 2 was predominant. Markov chain Monte Carlo analysis indicated that the tMRCA of CVB5 in the Chinese mainland could be traced to 1955, while the global trend could be traced to 1862, 93 years earlier than China. The evolution rate of CVB5 was higher in the Chinese mainland than worldwide. The spatiotemporal dynamics analysis of CVB5 assessed that virus transportation events were relatively active in Central, Northeast, North and Northwest China. Recombination analysis revealed frequent intertypic recombination in the non-structural region of CVB5 genotypes B and D with the other EV-Bs, revealing eight recombination lineages. Our study showed the molecular evolution and phylogeography of CVB5 that could provide valuable information for disease prevention.

Keywords: coxsackievirus B5; evolutionary dynamics; foot; genetic diversity; genotyping; hand; mouth disease; recombination analysis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • China / epidemiology
  • Enterovirus B, Human* / genetics
  • Genotype
  • Hand, Foot and Mouth Disease* / epidemiology
  • Humans
  • Molecular Epidemiology
  • Phylogeny

Grants and funding

This research was funded by the National Key Research and Development Program of China (Project No. 2021YFC2302003), Natural Science Foundation of Beijing (Project No. L192014), and the National Key Science and Technology Projects of China (Project No. 2018ZX10101002-001-003), and was supported by the Academic Promotion Programme of Shandong First Medical University (2019RC010), the National Natural Science Foundation of China (No. 81903401), the Shandong Province Higher Educational Young and Innovation Technology Supporting Program (2019KJL004) and Doctoral Scientific Research Foundation of Shandong First Medical University.