Russell Foreman – The Ringway Virus (Nel, Aug. 1977)
Blurb:
A British family, on holiday in Australia, suddenly found itself prey to a mysterious illness. At first, it was diagnosed simply as flu, but within a matter of weeks, all of them were to die.
It was at this point that the existence of a new and utterly lethal virus was confirmed – a virus the human body could have no possible resistance to. The result? One hundred percent mortality. The end of the human race.
Unless … if a tiny few could somehow isolate themselves sufficiently to survive, there might still be hope for mankind. It was a big ‘if’ – a gamble which builds into one of the most nightmarish tales you’ll ever read.