Is there a 'guarantee' that your saliva with infect you....NO. Think about it though.....these bacteria are already IN your body. So your immune system will probably not 'see' them as too big a threat. But human bites are far worse than a dog or cat (Solely on the bacteria thing---not on trauma, ripping, jaw pressure etc) in the regards of infection. Ask any ER doc... they can be the worst. Do "I" have the 'documentable proof' you want. Maybe if I dig through 20+ year old college notes (Dang....has it really been that long?!?!?) from my microbiology class. But it is established.