Possible European Origin of Circulating Varicella Zoster Virus Strains.

Varicella zoster virus (VZV) is the causative agent of chickenpox and shingles. The geographic distribution of VZV clades was taken as evidence that VZV migrated out of Africa with human populations. We show that extant VZV strains most likely originated in Europe and not in Africa. Europe was also identified as the ancestral location for most internal nodes of the VZV phylogeny, including the ancestor of clade 5 strains. We also show that strains from clades 1, 2, 3, and 5 derived a major proportion of their ancestry from each of 4 ancestral populations. Conversely, viruses from other clades displayed variable levels of admixture. Some low-level admixture was also observed for clade 5 genomes, but only for non-African viruses. This pattern indicates that the clade 5 VZV strains do not represent recent introductions from Africa due to migratory fluxes. These data have also relevance for the definition and classification of VZV clades. © The Author(s) 2019. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: journals.permissions@oup.com.

Citation

Chiara Pontremoli, Diego Forni, Mario Clerici, Rachele Cagliani, Manuela Sironi. Possible European Origin of Circulating Varicella Zoster Virus Strains. The Journal of infectious diseases. 2020 Mar 28;221(8):1286-1294

Mesh Tags

PMID: 31051029

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