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. 2021 May 26;7(22):eabe2592. doi: 10.1126/sciadv.abe2592

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Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).

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Fig. 1 — (A) Maximum clade credibility time-scaled phylogenetic tree based on the S1 genome segments (n = 270) and full genome sequences (n = 122) where available. Branches are colored by reconstruction of the origin of PRV-1. Samples were classed as Atlantic (Europe and Atlantic Canada), NE Pacific (Pacific Canada and USA), or South East Pacific (i.e., Chile). Vertical bars show the 95% HPD of the age estimate. Branch tips are colored and shaped by the species of the host and region in which the samples were collected. As the origin of samples collected from markets cannot always be determined, we assigned these to their own group. (B) Schematic representation of the global emergence of PRV-1. Arrows depict estimated translocations of PRV lineages. Movements are determined by the tree in (A).