answersLogoWhite

0

Viruses have to come from a source (Chain of Infection: Source, Portal of Exit, Mode of Transmission, Portal of Entry, Susceptible Host) but the thing about Viruses is that once you have them they're there for good. Often they remain latent and only raise their head if the host is run down, stressed, mal-nourished...

User Avatar

Wiki User

17y ago

What else can I help you with?