Response from Mr. Sowadsky
Hi. Thank you for your questions. Let me answer them one at a time.
1. In one of your responses I believe that you thought the process may be
done in Toronto in addition to Italy and Germany. Do you have any new info on
that?
As of this date, to my knowledge, this experimental procedure is only being
done in Munich, Germany and Milan, Italy. I am not aware of this procedure
being done anywhere else in the world at this time. I recently checked to
see if this procedure was being tried in the USA. I was unable to find any
place in the USA where this procedure is being tried.
2. Am I correct in understanding that the transmission rate from male to
female sexual contact is acutally quite low assuming no open lesions etc.
No. Over 15 years of worldwide data have shown that both partners during
intercourse are at high risk of HIV infection. During intercourse (vaginal
or anal), the insertive partner is at high risk, and the receptive partner is
at even higher risk. Note that when the other partner is infected, neither
partner is at low risk.
Let's look at HIV transmission in greater detail. To understand why both
partners are at risk of infection during intercourse, we need to review the
basic requirements for HIV transmission to occur.
In order for infection to occur, 3 things must happen:
Requirement #1) You must be exposed to pre-cum, semen, vaginal secretions,
blood, or breastmilk, AND
Requirement #2) The virus must get directly into your bloodstream through
some fresh cut, open sore, abrasion etc., AND
Requirement #3) Transmission must go directly from 1 person to the other
very quickly...the virus does not survive more than a few minutes outside
the body.
Let's now apply this information to vaginal intercourse specifically. In
regard to the receiving partner:
Requirement #1:
This partner is exposed to pre-cum and/or semen. The more of these body
fluids they are exposed to, the greater the risk of infection.
Requirement #2:
HIV can get into the bloodstream through microscopic cuts and abrasions in
the walls of the vagina that normally occur during vaginal intercourse. The
more cuts/abrasions there are, the greater the risk for infection. In
addition, if the partner has another STD that has open lesions (for example
syphilis or herpes), this can make HIV enter the bloodstream even easier.
Requirement #3:
HIV is directly going from one partner to the other during intercourse
itself.
Now let's look at the risks as far as the insertive partner is concerned:
Requirement #1:
This partner is being exposed to vaginal secretions, and potentially
menstrual blood, which normally occurs during vaginal intercourse. The more
of these body fluids the man is exposed to, the greater the risk of
infection.
Requirement #2:
HIV can enter his bloodstream through microscopic cuts and abrasions that
normally occur on the head of the penis. These microscopic openings are a
result of the friction that normally occurs during intercourse, and are too
small to visually see, but large enough for HIV to enter. These small
cuts/abrasions are most likely to occur on the head of the penis, since this
is made of mucous membranes, which tend to abrade easier than regular skin.
The more cuts/abrasions there are, the greater the risk for infection. Also,
if a man were to have any open lesions on his penis due to other STD's (like
herpes, syphilis etc.), it would be much easier for HIV to enter his
bloodstream.
Requirement #3:
HIV is directly going from one partner to the other during intercourse
itself.
These same principals of transmission risk can be applied to other sexual
activities as well (anal intercourse, oral sex etc.). No matter what the
circumstances are, if you think about these 3 requirements for transmission,
you'll be able to determine whether you're at risk for HIV or not. But do
remember that other sexually transmitted diseases (STD's) can be transmitted
easier than HIV, so what might be low risk for HIV may be high risk for other
STD's.
For a related question, see the post, "Why
male-to-female not 100%?"
3. Any studies or theories on the affect of the virus in the semen due to the
protease inhibitors.
Recent studies suggest that if protease inhibitors reduce the viral load in
the blood, that viral load is reduced in other parts of the body as well. If
the viral load is reduced "below detectable levels," this merely means your
risk would be lower through his semen, than exposure to semen from a man
with a high viral load. But "lower" risk is NOT the same
as "low" risk.
There is no evidence to date that low viral loads (or viral loads below
detectable levels) would lead to a low risk of infection from semen. It may
lead to a lower risk, but not a low risk. Having unprotected sex with a man
whose viral load is low (or below detectable levels), is still considered
risky, as far as transmission of HIV is concerned.
For related questions on this topic see, "HIV Transmission From Patient with
Nondetectable Viral Load," and "AFFECT OF MAGIC'S WIFE'S
REVELATION THAT MAGIC HAS BEEN CURED."
4. Any studies or theories as to the affect on a fetus when the male is
taking the protease inhibitors.
Because protease inhibitors are so new, the answer to this question is
presently unknown.
In summary, in a couple where the man is positive and the woman is negative,
they have several options if they wish to have a child:
1) Contact the researchers in Italy or Germany to see if they can get into
the experimental sperm washing procedures. For more information on this
issue, see the posting, "washing semen of HIV in
the lab."
2) Adopt a child (this would then pose no risk to the mother). There are
many children out there who need caring parents.
3) Take their chances using the sperm of the man. This is the riskiest and
least desirable of your options, since this is the riskiest option, in terms
of the woman and her baby becoming infected. Remember, there's still a
significant chance of infection, even if the viral load of the man is low.
If you have any further questions, please feel free to call the Centers for Disease Control at 1.800.232.4636 (Nationwide).
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