Viruses

African horse sickness virus (AHSV) infects all equine species and is often fatal in horses and mules. It is from the family Reoviridae of the genus Orbivirus and there are 9 types (serotypes). AHSV is unenveloped and made up of...

African swine fever virus (ASFV) causes a devastating disease of pigs. It is a large complex DNA virus and is the only member of the Asfarviridae family, genus Asfivirus. ASFV has several layers that surround a dense core...

Avian influenza (AI) viruses, commonly known as bird flu, infect a wide range of hosts, including humans and swine. The natural reservoir lies in populations of wild aquatic birds such as ducks and shorebirds. AI viruses are members of...

Avian leukosis virus (ALV) infects mainly chickens but can also infect pheasants, partridges and quail. It belongs to the Alpharetrovirus genus of the family Retroviridae. It is divided into subgroups A, B, C, D, E and J, depending...