Most of them were identified by 1991, though C135 himself was not identified till 1996, when all recipients of transfusions from the donor, D36, were traced.
اکثر آنها در 1991 شناسایی شده بودند، اگر چه C135 خود تا 1996 شناسایی نشد، در حالی که تمام گیرندگان انتقال دهنده donors D36 قرار داشتند.