Figure 3
From: Determinants of relapse periodicity in Plasmodium vivax malaria

Combined results of the preliminary mosquito infection studies of James and Shute in the Horton Hospital, Epsom, England and the self experimentation of Shüffner, Korteweg, Swellengrebel-de Graaf, Swellengrebel, de Buck and de Moor in The Netherlands as illustrated by Shüffner et al [27]. This confirmed the 8 to 9 month interval from being bitten by one or two infected anopheline mosquitoes and developing vivax malaria