Viral systemic diseases

Viral means "relating to viruses" (small infectious agents).

Viral may also refer to:

Viral behavior, or virality

Memetic behavior likened that of a virus, for example:

* Viral marketing, the use of existing social networks to spread a marketing message
* Viral phenomenon, relating to contagion theory or the "virality" of network culture, such as a meme
* Viral video, a video that quickly attains a high popularity

Titled works

* ''Viral'' (2016 American film), a 2016 American science fiction horror drama
* ''Viral'' (2016 Hindi film), an Indian Bollywood film based on social media
* ''Viral'' (web series), a 2014 Brazilian comedy web series
* '' V/H/S: Viral'', an American anthology horror film
* '' Viral: The Search for the Origin of COVID-19'', a book by Alina Chand and Matt Ridley

See also

* '' Virals'', a novel series by Kathy Reichs
* Virulence, pathogen's ability to infect or damage host

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