The Dengue-Sand-Fly Fever Problem

have been described; other writers apply the name of the place in which the outbreak has been seen and so suggest that the disease is peculiar to that locality. The claim for the discovery of a new disease would, in most cases, have been recognised to be unjustified if the authors had been aware of the following facts in connection with the fevers of the dengue group I. Fevers of the dengue-sand-fly group may last from one to seven days, very exceptionally