This is the 5808th most frequent Japanese word.
はやる
"To be popular" or "to be in fashion."
In this sentence, はやる is used to express popularity or trendiness, indicating that the song is widely favored or trending among the youth.
この歌は若者の間で今とてもはやっています。
This song is very popular among young people now.
Here, はやる indicates the spreading or prevalence of something, in this case, an illness, within a certain group or location.
風邪が学校で広がり、はやっています。
The cold is spreading and prevailing in the school.
In this context, はやる expresses eagerness or enthusiasm towards engaging in an activity, describing the person's proactive attitude towards technology adoption.