ENDEMIC

[adjective] - (esp. of disease or a condition) regularly found and very common among a particular group or in a particular area, so that it is part of the general situationMalaria is endemic in many of the hotter regions of the world.The disease is endemic among British sheep/to many British flocks.He said that corruption was endemic in parts of the police force.There is endemic racism/poverty/violence in many of the country's cities.