Peste des petits ruminants (PPR) is a highly contagious, infectious, often fatal disease caused by peste des petits ruminants virus (PPRV), which is of the genus Morbillivirus in the family Paramyxoviridae. Goats, sheep, and wild ruminants can be infected, however goats are more susceptible. Disease outbreaks occur most frequently during the rainy season.

Transmission
PPRV is shed in the secretions of infected animals, affecting other goats and sheep by direct and indirect contact. The virus can remain active in the environment for up to 36 hours.

Incubation period
The incubation period is 4 to 6 days.