P1569: COVID19 AND ITS IMPACT ON HEMATO-ONCOLOGICAL PATIENTS. DIFFERENCES IN OUTCOMES IN RELATION TO OMICRON CIRCULATION AND VACCINATION STATUS? oleh A. Addiego, A. I. Prado, V. Moraes, P. Cano, I. Gervaz, L. Perez, R. De Giuda, A. Flores, E. Riva, M. Ferrando, S. Grille, G. Borelli, A. Vazquez, M. Stevenazzi, R. Gabus, A. I. Landoni, C. Guillermo, M. Boada