The 11th plague — L.T. Peters

. . . is for that twelfth hour, one of those doomsday scenarios after the first cyanotic casualty turns up in a hospital and before you know it, there's a body count of some 64,000. An Arab microbiologist has released an organism unidentified by Max Schwartz, dean of infectious diseases, and his most brilliant disciple who will finally experiment on himself to secure the drug which will stop the holocaust and save the lives (that too) of his wife and child. You certainly won't drop dead from surprise since you've faced the possibility in one book after another but perhaps it's dire enough to bear repetition. Just perhaps.