Tracing the evolution and diversity of human parvovirus B19 across human history.

Ancient human parvovirus B19 lineages trace back to around 12,000 years ago, with evidence of recombination events shaping its current diversity.

• Why it matters: Understanding B19V's evolutionary history helps clarify its long-term impact on human health and disease transmission, filling a significant knowledge gap.
• What they did: Genomic data from 53 ancient individuals spanning over 8,000 years were analyzed, revealing the timing of the most recent common ancestor and identifying extinct Eurasian lineages involved in recombination.
• The result: The findings illuminate how ancient B19V variants emerged and spread, providing insights into their role in human health evolution and informing future disease research.