Rhinopneumonitis, is a virus that can cause respiratory disease, neurologic disease or abortion.

Outbreaks in Ohio and Iowa, horses showed neurologic signs

The Rhino vaccine is included in the spring vaccines, and is also given in the "Fall boosters".

It is not 100% effective, however vaccination can reduce the spread of the disease.

The best effectiveness for this vaccine is the first 3 months after it is given. It is more effective against the respiratory and abortion forms than the neurologic form. CVVS strongly recommends that any horse that is boarded or travels to shows/events be vaccinated every 3 months against Rhino.