Etiology: Sendai virus and PVM are RNA viruses of the paramyxovirus group. Sendai virus is a parainfluenza virus type 1 and PVM is a pneumovirus that is serologically distinct from Sendai virus.
Incidence: Incidence of infection with these viruses is rare in research hamsters.
Transmission: Direct contact is the primary means of transmission. The virus is not stable in the environment, losing 99% infectivity at room temperature in an hour.
Clinical Signs: Infection is usually asymptomatic.
Pathology: No lesions are observed on gross or histologic tissue examinations.
Diagnosis: Diagnosis is based on identification of antibody by serological testing, usually by MFI.