An outbreak of abortion caused by the equine arteritis virus.
D000028:Abortion, Induced; D000818:Animals; D001167:Arteritis / Q000382:microbiology*; D004196:Disease Outbreaks; D007240:Equartevirus; D005260:Female; D006734:Horse Diseases; D006736:Horses; D011247:Pregnancy
ARTERITIS/microbiology; HORSES/diseases