Ovine Progressive Pneumonia

Ovine Progressive Pneumonia

Which virus of small ruminants is abbreviated OPP, is a retrovirus, is RNA and enveloped, is not zoonotic, and has a long incubation time? Head jerking, nasal discharge, and cough are most commonly seen and the lungs do not collapse when the thoracic cavity is opened.

Retroviridae

What viral family includes the OPP virus?

RNA

Is the OPP virus RNA or DNA?

Enveloped

Is the OPP virus enveloped or naked?

No

Is the OPP virus known to be zoonotic?

2-3

Usually, OPP does not become recognizable until the animal is about how many years old? The course of clinical signs can last 3-8 months, and pregnant ewes may abort or deliver weak lambs.

Yes

Does OPP infection include immunosuppression, homogenous consolidation of the lungs, and hyperplasia of fibrinous tissue/muscle of the alveolar septa?

Antibody

What type of ELISA, along with WB, PCR, and isolation, are used to diagnose OPP? The virus can be seen in blood, semen, bronchial secretions, saliva, and milk.

Yes

Can OPP be spread both directly (droplet) and indirectly (water/feces/vector/iatrogenic)?

Milk

Asymptomatic sheep with OPP usually do not spread the virus except through what route?

No

Is there a vaccine for OPP? Animals should be tested once or twice a year and removed if positive.