1.
If a disease or illness is ~ in a place, it is frequently found among the people who live there. (TECHNICAL)
Polio was then ~ among children my age.
ADJ
2.
If you say that a condition or problem is ~, you mean that it is very common and strong, and cannot be dealt with easily. (WRITTEN)
Street crime is virtually ~ in large cities.
...powerful radicals with an ~ hatred and fear of the West.
ADJ