In Human(P.vivax and ovale)pre-erythrocytic stageEE(exo-erythrocyticstage)8 daysTStachy-sporozoitesBSbrady-sporozoites2.Es(erythrocyticstage)48hschizogony EEand ESresultinmore merozoites
In Human (P.vivax and ovale) 1. pre-erythrocytic stage EE (exo-erythrocytic stage) 8 days tachy-sporozoites TS brady-sporozoites BS 2. ES (erythrocytic stage) 48h schizogony EE and ES result in more merozoites
Redbloodcellsd?Merozoites福
MorphologyInhumanPre-erythrocyticstage福Ringforms(earlytrophozoites)LatetrophozoitesSchizontsMalegametocytesFemalegametocytes
Morphology In human Pre-erythrocytic stage Ring forms (early trophozoites) Late trophozoites Schizonts Male gametocytes Female gametocytes
Pre-erythrocyticschizontinliverThesematurein6-14days'time liberationmerozoites into theblood stream.Giemsa-colophonium. X 400Enlargedby5.4
Pre-erythrocytic schizont in liver. These mature in 6-14 days’ time liberation merozoites into the blood stream. Giemsacolophonium. ×400. Enlarged by 5.4
P.vivaxRingsin2slightlyenlargedRBCS;17y.o.man witharelapseduetoP.vivax(PCRconfirmed),6monthsafterreturningfroma visittoPapuaNewGuinea(specimencontributedbyVirginiaSHD)
P. vivax Rings in 2 slightly enlarged RBCs; 17 y.o. man with a relapse due to P. vivax (PCR confirmed), 6 months after returning from a visit to Papua New Guinea (specimen contributed by Virginia SHD)