Potomac Horse Fever In Oklahoma

...The recent confirmation of Potomac horse fever (PHF) in an Oklahoma horse was possible because of relatively new--and inexpensive--testing techniques that aide in quickly diagnosing the disease. This allows horse owners to be alerted to the active presence of the disease's causative agent in their area. Recognition of the disease in areas unused to seeing PHF is important. This burden falls to treating veterinarians, horse owners, and diagnostic laboratory officials, who take or request blood or tissue samples from horses with clinical signs of PHF...

See the original story of finding PHF here.