endemic

Of or relating to a disease (or anything resembling a disease) constantly present to greater or lesser extent in a particular locality.

“diseases endemic to the tropics”

“endemic malaria”

Originating where it is found.

“endemic folkways”

Native to or confined to a certain region.

“the islands have a number of interesting endemic species”

A disease that is constantly present to a greater or lesser degree in people of a certain class or in people living in a particular location.

A plant that is native to a certain limited area.

“it is an endemic found only this island”