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flag Scientists found ancient HHV-6 genomes in 2,500-year-old remains, showing the viruses have co-evolved with humans since the Iron Age.

flag Scientists have recovered ancient genomes of HHV-6A and HHV-6B from human remains over 2,500 years old, revealing the viruses have co-evolved with humans since at least the Iron Age. flag The study, involving researchers from the University of Vienna, University of Tartu, and others, identified 11 ancient viral genomes in samples from Europe, including medieval England and Belgium. flag Some individuals carried chromosomally integrated HHV-6B, the earliest known evidence of inherited herpesvirus, a trait still present in about 1% of people today. flag Comparisons suggest these integrations have persisted for millennia. flag HHV-6A appears to have lost integration ability over time, indicating divergent evolution. flag The findings confirm a deep, long-term relationship between humans and these viruses.

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