What does "virally" mean?

Due to, or by means of, a virus or viruses.

What is a synonym for "virally"?

Common synonyms include: contagiously, online, pathogenically, rapidly, widely.

/ˈvaɪɹəli/ adv

adv ·Rare ·Advanced level

Adverb

1
Due to, or by means of, a virus or viruses.
"The cells have been virally infected."
2
In a viral fashion; often specifically in the context of viral marketing.
"The widespread use of mobile phones which support free Bluetoothing has enabled promotional videos to be distributed virally between handsets."

"The cells have been virally infected."

From viral + -ly.