Paramyxovirus 2 - Yucaipa Disease


An infection of chickens, turkeys and passerine cage birds with Paramyxovirus PMV-2 results in disease with variable mortality, depending on the species affected and whether infection is complicated by other factors and diseases. In chickens it is usually mild, whereas turkeys are more severely affected. Transmission is by wild birds and fomites. Wild birds are believed to be especially important. Vertical transmission does not usually occur.


  • Depression.
  • Inappetance.
  • Coughing.
  • Drop in egg production.

Post-mortem lesions

  • Not characteristic.


Isolation in CE, HA+, HI with ND serum or DID (less cross reactions), IFA. Differentiate from Infectious bronchitis, laryngotracheitis, EDS-76, haemorrhagic disease.


No specific treatment, antibiotics to control secondary bacteria.


Quarantine, biosecurity, all-in/all-out production.