The above title evidences our belief that the epidemic which has been prevailing throughout the United States and our new possessions for the past two years, is not identical with the old-fashioned smallpox of twenty years ago. I have been identified with two epidemics— twenty years apart—and though they were evidently both species of smallpox, they were nevertheless very dissimilar in many characteristics. Without exception, the descriptive adjectives applied to our later epidemic, whether through the reports in our daily papers, or in the more authoritative reports in the medical journals, all contain such terms as "mild," "modified," "light type," etc., and many medical men, even up to this day, deny that our present disease is, in fact, smallpox.
It is safe to assert that more of the recent cases have been diagnosed chicken-pox than smallpox, and I am free to confess that in the first two cases that I
BEEBE WL. SMALLPOX—OLD AND NEW.. JAMA. 1901;XXXVII(5):299. doi:10.1001/jama.1901.62470310005001a