Re: [Paddlewise] Sweet Water Filters

All - 

My information was confused and incorrect.  My apologies.  The water-borne virus that is a real threat is "Norwalk-like virus".  Paddler magazine (which arrived last night after my confused post) has a fine article about all the ugly stuff that you get from polluted water.

jerry.


At 09:45 AM 01/26/2000 -0400, Ulli Hoeger wrote:
>On 26 Jan 00, at 1:03, PaddleWise wrote:
>
>> 
>> Date: Tue, 25 Jan 2000 17:41:28 -0800
>> From: Jerry Hawkins <jhawkins_at_cisco.com>
>> Subject: Re: [Paddlewise] Sweet Water Filters
>> 
>-snip-
>>> human viruses were being spread by this means.  I hope not!
>> 
>> Unfortunately the "big 3" virus diseases spread through polluted drinking water are cholera, typhus, and listeria.
>> 
>snip
>> jerry.  In sunny but not unpolluted California.
>
>Hi,
>I am not a medic, but as far as I know cholera and typhus are not 
>viral infections (bacteria and protozoa).  I am not sure about listeria.
>Crucial details, if you catch one of these bugs, because their 
>treatment in our part of the world is no big problem.  
>But many viruses can be spread by water, just thinking of  
>menengitis or polio (?).  Viral infections are much harder to cure 
>than bacterial infections (like cold vs. flu).
>I am think most viruses are to small to be filtered, so additional 
>chemical treatment would be necessary to inactivate them.  Some 
>filters offer this additional step.
>
>My $0.02
>
>Ulli
>
>
>
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