Post your questions in the Expert forum. You have been given your assessment.
But does it deactivate ALL virus present in blood or some can escape and remain infectious?
Saliva has over a dozen different enzymes and proteins that inhibit HIV transmission.
Yes even if blood is present.
Is it zero risk even with blood present?
It's old and they've haven't updated their website in years. The same info has been on there since the 80's.
But why do they say that?
I know you respect the CDC. They are an important and serious organization, no?