Toxoplasmosis transmitted by blood transfusions

Blood from humans collected into heparin or citrate was inoculated with toxoplasma organisms. After storage at 4 C up to 28 days, samples were injected into the ear veins of rabbits. The test rabbits developed toxoplasmosis. Similar results were obtained by transfusing rabbits with blood obtained from rabbits subcutaneously injected with toxoplasma organisms.