Infections after thymus transplantation. The number of infections per patient per year is presented for the first 6 months after transplantation before normal T-cell function has developed and for the remainder of follow-up time. All 44 patients who received a transplant are included in the data for the initial 6 months, resulting in 19 patient-years of follow-up. The follow-up time from 6 months after transplantation until the end of November 2006 totaled 82 patient-years of follow-up. A decrease in rate of infections is seen.