olemus
(a) viirusepõhine; viirustesse puutuv
(b) viirusetaoline, massiliselt leviv, näiteks meem

Wiktionary:
adj
1. (computing, virology) of or relating to virus; caused by a virus
2. (advertising, marketing, social media) circulated rapidly and widely from one user to another

vt ka
- viirusturundus