I looked at the figures too, and thought they didn't [seem to] addup
What about sterilisation using heat fto destroy viruses + bacteria in blood [is it possible/routinely done?]

I think on the pharmacy course they mentioned heating at 60oC for 30 minutes kills viruses but doesn't harm blood [blood consists partly of proteins which would denature at high temperatures]

does this happen, and would this not just increase bacterial growth?