Ovine rinderpest Ovine rinderpest Ovine rinderpest, also commonly known as peste des petits ruminants (PPR), is a contagious disease primarily affecting goats and sheep; however, camels and wild small ruminants can also be affected. PPR is currently present in North, Central, West and East Africa, the Middle East, and South Asia. It is caused by "small ruminants morbillivirus" in the genus "Morbillivirus," and is closely related to, among others," rinderpest morbillivirus, measles morbillivirus", and "canine morbillivirus" (previously known as canine distemper virus). The disease is highly contagious, and can have a 80–100% mortality rate in acute cases in an epidemic setting. This
Ovine pulmonary adenocarcinoma of lung fluid produced by the affected lung tissue; lifting the hind legs of the animal above the level of its head will cause large volumes of this fluid to flow from the nostrils. There are no reliable tests for the diagnosis of OPA in live animals which are suitable for use on farms, so diagnosis can only be confirmed at necropsy (post-mortem examination). On necropsy, lungs are interspersed with multifocal tumors. Some of these are small discrete nodules and others will involve the entire half of a lung lobule. JSRV acutely transforms the lung epithelia into cancerous cells, with