A

Transfused blood carries asexual intra-erythrocytic forms (trophozoites); once these infected red cells enter the recipient, the parasites can continue the blood cycle immediately, bypassing the hepatic (sporozoite) phase and therefore producing a much shorter incubation period [Kinde-Gazard, 2001, PMID 11226934; Andrieu, 1982, PMID 6291168].