Novel lineage of anelloviruses with large genomes identified in dolphins.

Unlabelled: Anellovirus infections are ubiquitous in mammals but lack any clear disease association, suggesting a commensal virus-host relationship. Although anelloviruses have been identified in numerous mammalian hosts, their presence in members of the family Delphinidae has yet to be reported. Here, using a metagenomic approach, we characterize complete anellovirus genomes ( = 69) from four Delphinidae host species: short-finned pilot whale (, = 19), killer whale (, = 9), false killer whale (, = 6), and pantropical spotted dolphin (, = 1).

The pigeon circovirus evolution, epidemiology and interaction with the host immune system under One Loft Race rearing conditions.

This study was aimed to investigate the frequency of PiCV recombination, the kinetics of PiCV viremia and shedding and the correlation between viral replication and host immune response in young pigeons subclinically infected with various PiCV variants and kept under conditions mimicking the OLR system. Fifteen racing pigeons originating from five breeding facilities were housed together for six weeks. Blood and cloacal swab samples were collected from birds every seven days to recover complete PiCV genomes and determine PiCV genetic diversity and recombination dynamics, as well as to assess virus shedding rate, level of viremia, expression of selected genes and level of anti-PiCV antibodies.

Two Lineages of Papillomaviruses Identified from Caracals () in South Africa.

Papillomaviruses (PV) infect epithelial cells and can cause hyperplastic or neoplastic lesions. In felids, most described PVs are from domestic cats (; n = 7 types), with one type identified in each of the five wild felid species studied to date (, , , and ). PVs from domestic cats are highly diverse and are currently classified into three genera (, , and ), whereas those from wild felids, although diverse, are all classified into the genus.