On 24/10/2012 9:47 AM, Peter L Borst wrote:
>> In many (most?) cases there is a tendency for the invasive organism to become less virulent.
>
> So, anyone who suggests that non-virulence is inevitable in a parasite is mistaken. Evolution has no foresight, so a species can run rampant through its supply of hosts and then go extinct itself, not having "fore-seen" this eventuality.
Ah, er, nowhere in the above can I see any reference to inevitable.
Geoff Manning
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