[Hank Kerchief]

There is also a risk, though small, that the serum from the donor could still contain viruses even though donors are screened for viruses like hepatitis,

Small risk, I guess.

I wasn't criticizing, just wondering if you had some specific risk in mind. You are right there is risk (but there is risk in everything), and you are also right, considering the alternative, the risk seems small.

Do you have any idea why they have waited so long to try serum therapy? It simply amazes me.

Hank

[riri]

Do you have any idea why they have waited so long to try serum therapy?

Actually, there were reports of serum (or maybe it was injection of antibodies) very early on. I will dig around and see if I can find it. Either way, if I remember correctly, it seemed promising at first and then I never read about it again.