<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 12 (filtered medium)">
<style>
<!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.Section1
{page:Section1;}
-->
</style>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang=EN-US link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal>Something to ponder: <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>For several years, Potable Aqua (iodine tablets) has said on
the bottle that iodine is ineffective against cryptosporidium.
Google “Iodine vs cryptosporidium” or however you want to word
it. I stopped checking after the first two entries, below.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><a href="http://www.outdoorsafe.com/safewater.htm">http://www.outdoorsafe.com/safewater.htm</a>
“Iodine is NOT an effective halogen when Cryptosporidium is present in
the water.”<br>
<br>
<o:p></o:p></p>
<p class=MsoNormal><a
href="http://findarticles.com/p/articles/mi_qa3912/is_200501/ai_n9478285/">http://findarticles.com/p/articles/mi_qa3912/is_200501/ai_n9478285/</a>
“Using two different challenge waters
and excystation to evaluate infectivity, Gerba et al.3 reported that iodine
tablets inactivated only 10% of the oocysts tested given a 20-minute exposure
and approximately 70% given a 240-minute exposure time.”<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>There may be more recent research to the contrary, but it is
something to be aware of. Iodine seems effective
against everything else.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Dr Bob <o:p></o:p></p>
</div>
</body>
</html>