San Antonio College Library

From tapeworms and lice to fungi and down to tiny viruses, we are surrounded by agents of infectious disease which can be caught from other people, animals, and the environment. The variety of such agents is enormous and their methods of infection often ingenious. Some have life cycles that also involve non-human hosts. The discovery of these agents of disease has involved luck and accident as well as dedication, even on occasion to the point of self-experimentation....