"For bacteria to actually die, the hot water would have to be at a temperature above what your skin could tolerate. Most people can tolerate a temperature of 110 degrees for little bits of time, but that's the most we can do."
Knowing that we could use a dialysis machine and hook up people to it and heat up their blood then cool it back down before putting it back into the person. The dialysis machine is already being made so that it would be easy to modify it to do this type of procedure.
The rest of the blood will not be affected by doing this at this temperature I wouldn't think. This would be a way of getting rid of any infectious bacteria that people have in their blood streams.