Virus-Host Interactions

To the tune of "Rockin' Around the Christmas Tree" by Brenda Lee
There are four types of interactions between a host and virus
Stable, evolving, and dead end, and those that are resistant
Both virus and host survive and multiply in a stable interaction
May infect multiple species, some are effectively permanent
Passage of a virus into a naive species
Evolving relationships are defined by instability
Dead-end interactions are a frequent outcome
Of most cross-species infections
From a new host there is no transmission
To others the same species — does not cause natural infection
Finally there are resistant virus-host interactions
Where there is an exposure event, but cells are not permissive



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