22 Tennessee racing horses sick with equine blood parasite

NASHVILLE, Tenn. (AP) - Tennessee's state veterinarian's office is investigating an outbreak of a blood parasite in a group of racing quarter horses.

The office says 22 horses have tested positive for equine piroplasmosis (pir-uh-plaz-MOH'-sis) in five locations within Bedford, Rutherford and Williamson counties.

It can take up to 30 ...
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