1) Endemic 2) Enzootic 
• (a.) Peculiar to a district or particular locality, or class of persons; as, an endemic disease.
<medicine> Peculiar to a district or particular locality, or class of persons; as, an endemic disease. ... An endemic disease is one which is constantly present to a greater or less degree in any place, as distinguished from an epidemic disease, which prevails widely at some one time, or periodically, and from a sporadic disease, of which a f...