Ancient herpes simplex 1 genomes reveal recent viral structure in Eurasia
Meriam Guellil, Lucy van Dorp, Sarah A. Inskip, Jenna M. Dittmar, Lehti Saag, Kristiina Tambets, Ruoyun Hui, Alice Rose, Eugenia D’Atanasio, Айвар Крийска, Liivi Varul, A.M.H.C. Koekkelkoren, Rimma D. Goldina, Craig Cessford, Anu Solnik, Mait Metspalu, Johannes Krause, Alexander Herbig, John Robb, Charlotte J. Houldcroft, Christiana L. Scheib
Abstract
Human herpes simplex virus 1 (HSV-1), a life-long infection spread by oral contact, infects a majority of adults globally. Phylogeographic clustering of sampled diversity into European, pan-Eurasian, and African groups has suggested the virus codiverged with human migrations out of Africa, although a much younger origin has also been proposed. We present three full ancient European HSV-1 genomes and one partial genome, dating from the 3rd to 17th century CE, sequenced to up to 9.5× with paired human genomes up to 10.16×. Considering a dataset of modern and ancient genomes, we apply phylogenetic methods to estimate the age of sampled modern Eurasian HSV-1 diversity to 4.68 (3.87 to 5.65) ka. Extrapolation of estimated rates to a global dataset points to the age of extant sampled HSV-1 as 5.29 (4.60 to 6.12) ka, suggesting HSV-1 lineage replacement coinciding with the late Neolithic period and following Bronze Age migrations.