''Strongylus vulgaris'' is a clinically important parasite causing verminous arteritis and was a very common cause of colic in horses. Its prevalence has been on the decrease since the use of wormers containing ivermectin. | ''Strongylus vulgaris'' is a clinically important parasite causing verminous arteritis and was a very common cause of colic in horses. Its prevalence has been on the decrease since the use of wormers containing ivermectin. |