Learn about this horse disease and how to prevent it.

The American Quarter Horse Journal -- It is a disease that lurks in a horse’s blood, with tiny protozoa attacking red blood cells. Equine piroplasmosis is common in tropical and sub-tropical regions of the world, including parts of Central and South America, the Caribbean, Africa, Europe, the Middle East and Asia, but is considered a foreign disease in the United States, and efforts are underway to keep it that way.