The history of latter-day plague outbreaks emphasizes certain dangers of that disease to which too little attention has hitherto been paid: first, the existence of an extreme variation in the susceptibility of individuals; second, a similar variation in the malignancy of the disease. Both of these variations are dependent on qualities as yet undetermined, but abundant instances are on record to show that they are real. Yet another danger is the tendency of plague to "lie low" for a while, as it were, to recur and recrudesce sporadically in a given community. And, finally, there is the danger of its great transportability through the medium of indirect, as well as of direct, infection. Of this also there is ample evidence. It becomes, therefore, a matter of the gravest concern when sporadic foci are found in any country—however destitute apparently the disease may appear to be of epidemicity for the time
THE PRESENT PLAGUE SITUATION ON THE PACIFIC COAST.. JAMA. 1907;XLIX(24):2011. doi:10.1001/jama.1907.02530240047007
Customize your JAMA Network experience by selecting one or more topics from the list below.