A (t) Concerning
fellatio, the risk of HIV transmission is possible in case
of a bleeding lesion, like gingivitis, or even just after a
teeth brushing. But the lesion may be microscopic, giving a
non visible bleeding. To our knowledge, the HIV cannot
penetrate a mucosa without lesion.
Taking about mucosa
permeability, or skin permeability, means that, indeed,
these surfaces are not continuous, and exchanges from one
side to the other are possible. Indeed, the majority of the
skin surface is not continued by skin, but by empty spaces,
wich are the scene of important exchanges with the
outer.
Concerning the fragility of the HIV in the air, this notion
is based on the fact that it is much more fragile than other
viruses, like HBV or HCV (this is why it is much more
probable to be infected by this two viruses, when stung by a
needle on a beach, than with the HIV).
Until now, the contaminating power of the HIV was evaluated
by measuring the reverse transcriptase activity : it has
been shown that a solution containing 100,000 times more
virus than in the blood of contaminated person, after a
56°C heating of 30 minutes, keeps an infecting power
during three hours.
Concerning the risk of contamination from dried sperm
containing HIV, its infecting power is certainly diminued;
but only biological measurements could tell us in wich
proportion (we could no find any publication on this
particular subject); a fellatio made in these conditions
could present a risk, if there is a bleeding lesion in the
mouth, even invisible. (9711)
