Obelisks have genomes of loops of RNA that resemble viroids, which are viruses that infect plants, leaving experts puzzled to why they were found in human-associated bacteria.

Scientists in Switzerland have cracked open a century-old viral mystery by decoding the genome of the 1918 influenza virus from a preserved Zurich patient. This ancient RNA revealed that the virus had ...

Missed viruses In 2022, Babaian and his colleagues searched 5.7 million genomic samples archived in publicly available databases and identified almost 132,000 new RNA viruses 2.