Hi
I have been reading this forum with interest and have learned immensely from the information here. Thank you all.
My question pertains to something that is puzzling me in my understanding of transmission. I have read many responses from the Drs that mutual masturbation (or fingering), even with some bodily fluids naturally coming in contact with sensitive body parts of the other partner, such as the glans, poses a very low or no risk threat of transmission. Yet, an unprotected insertive sex runs a much higher risk. What I would like to understand is, if a woman's vaginal secretions are transferred to my penis via her hand,(or from mine if fingering her first) how is this different than those same secretions coming in contact with the same glans but from inside her body? Is it environment, ie body temperature? Is it quantity? what makes the difference in transmission probability that makes one act safe and the other musch riskier?
Thank you