The Chesson strain of Plasmodium vivax malaria; relationship between prepatent period, latent period and relapse rate.

It has commonly stated that quinine and quinacrine (atabrine), which are suppressive agents in vivax malaria, cure few, if any patients. The concept that suppressive drugs are non-curative has been strongly reinforced by experience in World War II with Southwest Pacific vivax. However, not every patient treated with suppressive drugs experienced relapse.