Results in an infantry regiment of several plans of treatment for vivax malaria.

It is generally recognized that strain differences exist in vivax malaria. These differences may be reflected in widely differing tendencies to relapse, and in widely differing relapse intervals. This study is concerned with the strain or strains of malaria endemic originally upon the malarious island, plus possibly other strains introduced with troops. This experience may be at variance with experiences with other strains of vivax malaria encountered elsewhere.