SOLVED. Russian Scientist unleashes a virus on North America, killing people. I man realizing what is going on rushes his family to a remote Canadian lodge. A very small percentage of people survive the virus and become carriers. [s]

[Terry]

I read this book in the late 70's, 80's.
It was a more serious version of The Last Man on Earth tv show.

[Shanna_redwind]

Not sure about the details, but how about The White Plague by Frank Herbert.

[Andy Phillips]

I haven't read it so can't be sure, but it sounds like The Last Canadian.

[Terry]

Than you! The Last Canadian, The Last American, and Death Wind are three names of the same novel by William Heine.
Reading the reviews, that is the book!
Thanks!

[Andy Phillips]

Great! Glad you found it. I've been looking for a copy of the book for ages and didn't realise it is available under different names, so that might help me too.