Benjamin Rush,
Medical Inquiries and Observations…
“ The circumstances which seem to favour the communication of the yellow fever from one person to another, by means of what has been supposed to be contagion, are as follow:1. A patient being attended in a small, filthy, and close room. The excretions of the body, when thus accumulated, undergo an additional putrefactive process, and acquire the same properties as those putrid animal matters which are known to produce malignant fevers. ”
