Thanks TheMetalChef for your info...appreciate it!
There are two of us posting with different late blight issues...the original poster has heirloom tomatoes and wants to know if she can safely save her seed.
I am not interested in heirloom tomatoes...for the most part I raise hybrid vegetables and can not save seed. I do rotate the vegetables every year in the garden..always have. Late blight is a spore producing pathagen. The plants I ripped from my garden were HUGH and looked healthy, except for the beginnings of the blight. I am trying to find the best tomato to grow in the future, still haven't found one, or any.
Here is an intersting web site...it says you can safely keep seed from late blight contaminated tomatoes.
Disease photos - Vegetable Pathology - Long Island Horticultural Research & Extension Center