in a way that is caused by a virus

virally infected cells 受病毒感染的细胞

used to describe how something quickly becomes very popular or well known by being published on the internet or sent from person to person by email, phone, etc.

The video grabbed people’s attention and it spread virally around the world. 这段视频吸引了人们的注意力，并在全世界像病毒一样传播开来。