Plasmodium vivax is one of the most common human parasites causing malaria, a life-threatening vector borne disease. Gametocytes are the sexual-stage parasites that infect Anopheles mosquitoes and mediate the onward transmission of the disease. Plasmodium vivax gametocytes are round to oval with scattered brown pigment and fills the RBC. The infected RBC is noticeably larger than the uninfected RBC. Schüffner's dots may be seen with proper staining. Thanks to Dr. Preethi Chari for her contribution in this.