In times of stress and danger such as come about as the result of an epidemic, many tragic and cruel phases of human nature are brought out, as well as many brave and unselfish ones.
~ William Crawford Gorgas
Humanity shares a common ancestry with all living things on Earth. We often share especially close intimacies with the microbial world. In fact, only a small percentage of the cells in the human body are human at all. Yet, the common biology and biochemistry that unites us also makes us susceptible to contracting and transmitting infectious disease.
~ Brenda Wilmoth Lerner
He grinned. It was the sort of grin that Agnes supposed was called infectious but, then, so was measles.
~ Terry Pratchett
That's the world out there, little green apples and infectious disease.
~ Don Delillo