Will there ever be a Vaccine to HIV?

Jack Hamilton jfh at crl.com
Wed Mar 1 23:38:46 EST 1995


>>Remember, a parasite is better off if it doesn't kill its host.
> 
>        Not necessarily, sometimes negative effects to the host are
>necessary for the propagation of the parasite.  Take malaria for example,
>it kills 1 million a year, this is how the parasite can get transmitted
>effectively, by reproducing to large enough numbers that a subsequent
>mosquito bite will cause parasites to be taken up and transmitted to new
>hosts.  Unfiortunately this often results in the death of the host.

This is not an example of a negative effect being necessary for the 
propagation of the parasite.  You would need to show that malaria couldn't
be transmitted with smaller host concentrations. 

-- 

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Jack Hamilton  jfh at crl.com  KD6TTL  '92 K75RTA  co-moderator, sci.med.aids



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