“…Thus, immunity to the transferred virus should be assumed, but antibody production is usually highly impaired in the first months after PBPC or BMT, 36 and symptomatic infection by this transmission route has been described. 23,37 In both allogeneic and autologous PBPCs, transmission of parvovirus B19 cannot be avoided by donor selection. Therefore, recipients from IgG-positive PBPC donors should be monitored for B19 DNA in serum.…”