Earth Abides by George R Stewart written 1949. The world gets decimated by a plague, and only few have immunity. One of them is man named Isherwood Williams, he finds other survivors and attempts to keep civilization and learning alive . This book is a beautifully written and a very powerful read. One the best end of civilization novels ever written.
One of the best.
Agreed, read this many years ago but it has stuck in the memory.