Yaravirus: A novel 80-nm virus infecting Acanthamoeba castellanii

Significance Most of the known viruses of amoeba have been seen to share some features that eventually prompted authors to classify them into common evolutionary groups. Here we describe Yaravirus, an entity that could represent either the first isolated virus of Acanthamoeba spp. out of the group of NCLDVs or, in an alternative scenario, a distant and extremely reduced virus of this group. Contrary to what is observed in other isolated viruses...