Clavaviridae is a family of double-stranded viruses that infect archaea. This family was first described by the team led by D. Prangishvili in 2010. There is one genus in this family (Clavavirus). Within this genus, a single species has been described to date: Aeropyrum pernix bacilliform virus 1 (APBV1, Clavavirus yamagawaense).

The name is derived from the Latin word clava, meaning cudgel, and referring to the thick, stick-like nature of the virus.

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