Fiersviridae

Fiersviridae is a family of positive-strand RNA viruses which infect prokaryotes. Bacteria serve as the natural host. They are small viruses with linear, positive-sense, single-stranded RNA genomes that encode four proteins. All phages of this family require bacterial pili to attach to and infect cells. The family has 308 genera, most discovered by metagenomics. In 2020, the family was renamed from Leviviridae to its current name.

==Structure== Viruses in Fiersviridae are non-enveloped, with icosahedral and spherical geometries, and T=3 symmetry. Their virion diameter is around 26 nm.