The family Anelloviridae includes viruses with circular, negative-sense, ssDNA genomes of 1.7-3.9 kb. Anelloviruses form non-enveloped icosahedral virions constructed of the ORF1 protein, which adopts the single jelly-roll structural fold. Anelloviruses have been isolated from a broad range of birds and mammals, including humans, but are not associated with pathogenicity, except for members of the genus Gyrovirus. This is a summary of the International Committee on Taxonomy of Viruses (ICTV) Report on the family Anelloviridae, which is available at www.ictv.global/report/anelloviridae.
Kraberger et al. (2026) studied this question.