Thank you George. I understand that about Giardia cysts. But then, since Dr. Derlet is actually out taking samples, I wonder if he's been able to substantiate that in the Sierra.
The reason is that I am wondering how likely it is to get an infection. Only a few cysts surviving is different than most of them remaining viable after a winter. And after so much water has coursed through an area, I am curious how concentrated they would be in the streams I was drinking from.
Please do ask him, and ask if he's done any testing of water draining through those contaminated sites where the livestock had NOT been present since the winter.
