purpose of viruses??

[Rob Jordan]

 The aggressiveness can be really very high, Ebola Zaire 
> for example kills 9 out of 10 human hosts in <14 days.  I'd speculated that, 
> for the virus, this is not too good an idea as if you want to spread your 
> genetic material if your are too pathogenic then you eventually loose your 
> host.  Whereas AIDS although equally agressive allows the host to live thus 
> allowing its (somewhat rapid) propagation.
> 
True, probably the most successful virus would be one that could replicate
without causing any pathogenesis. Who knows perhaps we are infected with
many more viruses than we know.

Rob J.

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