prevalent

prevalent adjective uk/ˈprevələnt/ us
existing a lot in a particular group, area, or at a particular time

распространенный
These diseases are more prevalent among young children. prevalence noun [ U ] uk/ˈprevələns/ us
the large amount of something in a particular group, area, or at a particular time

распространенность, большое количество
the prevalence of smoking among teenagers