> What are the chances of catching a disease from previous donor during this procedure?
Effectively zero, as onemoreact says.
The chance of becoming infected due to unsterile conditions or opportunistic infections is higher than zero, however. This page is the best I've been able to find so far:
That page says you're taking about a 1 in 370 chance of serious complications:
> life-threatening complications for all marrow donors have been rare; there were 13 reported in 4,800 [0.27%, or one in 370] analyzed marrow donations.
edit: I found a small-n study that is very positive:
edit 2: I omitted the small-n study, because I found a much bigger one:
> The experience at a single institution in harvesting marrow for allogeneic transplantation on 1,270 occasions from 1,160 normal donors is presented in detail, together with an analysis of all the donor complications... Hospitalization time was three days or less for 99% of the procedures. Six donors had life-threatening complications; three of a cardiopulmonary and two of an infectious nature, and one cerebrovascular embolic episode. Significant operative site morbidity, usually transient neuropathies, occurred in ten procedures.
You have vary close to zero risk from prior donor's. Sterilization tools are incredibly effective, and for hard to sterilize things like needles they just dispose of them.
Now reviving a donating is still risky, but usually it's a choice between death and some lessor risks.
