Cowpox virus (family Poxviridae
, genus Orthopoxvirus [OPV]) was originally considered to infect milking cows and to have zoonotic potential.
Myxoma virus is a member of the family Poxviridae
The genus Parapoxvirus (family Poxviridae
, subfamily Chordopoxvirinae) comprises several members: orf virus (OV), bovine papular stomatitis virus (BPSV), pseudocowpox virus (PCPV), and parapox of red deer in New Zealand virus (PVNZ).
Six ORFs encode proteins with closest relatives in virus families such as Poxviridae
and Iridoviridae (9).
Cowpox virus (CPXV) belongs to the family Poxviridae
, genus Orthopoxvirus (OPV), and is closely related to other species, such as variola virus, vaccinia virus (VV), and monkeypox virus.