Related Clues:
- How popular videos ''go''
- Fast-spreading, on the Web
- Like a popular YouTube video
- Of organisms causing 'flu, etc
- Caused by pathogenic agent
- Relating to a pathogenic agent of disease
- How some videos go
- Like some modern videos
- Like some Internet videos
- Like some marketing
- Like a popular Internet video
- Like super-popular YouTube clips
- Like some videos
- Like YouTube videos gone wild
- Go ___ (take off via the internet)