The number of juveniles in the general population has fallen by a fifth in the past 10 years.

在过去的10年中，青少年在总人口中所占的比重下降了1/5。

But it has spread to the general population.

但它已经扩散到普通人群。

Well I think it stands for the general population.

我想它表示了普通大众。

Little research so far has dealt with the general population.

迄今很少有关于全体人口的研究。

As a result, Europe cannot detect spread in the general population.

结果，欧洲没有检测到人群传播。