CYGB and anemia: The median age of the patients with HPVB19 infection was 25 years, and the median time of infection occurrence was +107 days after transplantation, and 22(91.7%)had anemia with a median hemoglobin(HGB)level of 77.5(46–149)g/L, and 13(54.2%)had new-onset anemia or persistent decline in HGB.