What is the probability of contracting AIDs from a one time sexual experience?

My 15 year-old son confided that last night he had unprotected intercourse with a 15 year-old classmate. The girl has had sex with 4 other guys, three are suppostly virgins and the other guy is 17 and has "Been around". My son is totally freaked out and I have told him that he shouldn't be having this type of relationship unless it is serious and monogamous. He is so worried about AIDs. I don't need to lecture him on safe sex; he is his own teacher and punisher on this. But what about AIDs? What is the chance? What about testing? Is it too soon? Please help! I'll call his doctor on Tuesday, this Monday is a holiday.

I'm certainly no expert but I have researched this many times before out of my own curiosity.

From my understanding, it's really is a gamble. You can contract it from the first encounter, or it might be several encounters later. I think it also has to do with how far into the HIV infection the person is (how much of the disease is present in the body). You can't contract AIDS as such, HIV can eventually progress into AIDS but not always.

I can tell you it's easier for a female to contract HIV than it is for a male (that is in heterosexual intercourse, homosexual is a little different but that's not an issue in your case)

I don't know the statistics on the probability although I have read them somewhere - studies are generally hesitant to provide that information in the case that people become complacent (eg. if there is a 1 in 1000 chance of becoming infected....). Basically, it is just a gamble.

Please don't stress until your son gets some tests done and you have the results in your hands as stress will do nothing for your own health and your sons. So long as you are calm, he will be too. And once the results come back negative (fingers crossed!!!) THEN he can get the lecture.. I'm sure he's suffering immeasurably right now. Which I'm certain you understand.

Although a difficult circumstance, it should be comforting to know that your son can confide in you about something so serious and personal. I'm 20 years old with the closest of relationships with my parents and I could never admit something like that so your 15 year old son has one up on me.

Call your doctor on Tuesday and see what the doctor has to say. Until then, please don't stress =]

All the best for you and your son's health =] xo

There is a chance with any exposure.

Depending on what the ER doctor may assess his risk at, you're still within the window for preventative antiretroviral therapy (ie, drugs taken to prevent becoming HIV+)

Whether or not that's an option, he will need testing probably now and definitely in 6 months, not just for HIV but other STDs.
Go to an emergency room.

First of all, have testing done as soon as the doctor advises it.
It is possible to get AIDS from a one time sexual experience, just as women have gotten pregnant from a one time sexual experience.
The odds are that he didn't catch it - BUT - it is still possible.

well this definately sounds like a learning experience for him i hope everything is okay... and it could possibly be too early for symptoms to show up... but just talk to him dr and let him know if he doesnt have anything lets hope he doesnt think its okay to go out having meaningless sex again... good luck and i hope everything goes okay:)

Their is always a chance , but the only true way to tell is to go to the health department and get tested. Good luck i pray hat the test results will be negative.

he could only catch it if she had it. he should be tested though for syphillis and gonorhea which is more common in teens. the doc would prescribe an antiobiotic

100% possible if she has HIV.

First off, HIV virus is what causes AIDS. People exposed to HIV would get the HIV virus. The probability of a man getting HIV from 1 exposure is certainly less than a woman as the man is usually the "giver" and the woman is the "receiver". However, there have been cases of men who had received the HIV virus from a female. So his chances, I cannot guess whether or not he would get it. He may just be those "lucky ones". 1 out of every 4 teens have a STD, so his chances of a STD with a 15 year old girl who may be scared and have no clue of STDs would put him at high risk especially when the partner has associated herself with 4 men at 15 years old (I fault the parents for not punishing this young lady, that is beyond ridiculous, as I am a young adult and haven't even had that many) and there are a lot of teens with STDs that are untreated because they are scared to tell mom and dad.

There is nothing you can do but to have your son get tested at a 6 week mark, 9 week, and a 12 week mark which that would be a total of 3 months to determine whether or not he is HIV + or HIV- . Unless he has a suppressed immune system due to cancer (radiation/chemotheraphy), suppresant medication, it may take up to 6 months to determine HOWEVER that is highly rare and most would show at 3 months (12 weeks) 99% of the time.

I understand you may be mad at your son, but he has put himself in the biggest crap of the waiting game. I would suggest you as the parent start taking charge until this boy is 18 years old. You need to be teaching him as he is underage and has to have "mom to call the doctor" for him. That explains to you, right there, that he is still a child. There is nothing you can do but to wait and get tested and I WOULD suggest you tell him that if he continues this behavior, he is definitely going to get something by the time he is 18 & to ALWAYS wear condoms with oral and sex.

The probability is low. HIV (the virus that leads to AIDS) is more often transmited from males to females than the other way around. However, since there is a remote possibility that he has been infected, your son should be tested now, and at the 6 month mark (6 months after the last possible exposure), just in case, since it can take 6 months for the antibodies to show up on some tests.

(No one should ever have unprotected sex outside of a monogamous relationship. You say you don't need to lecture your son on safe sex, but considering his recent behavior, he has not learned this lesson yet. How can he be his own teacher at age 15?)

The probability that your son contracted HIV is extremely low.

That is not to say it's zero, of course, so you should consult a doctor and proceed from there.

One estimate of HIV cases in the US, cited on the avert.org page linked below, is that the number is around one million. Sure, that's a big number, but not SO big in a country of 300 million. It's not as though a quarter of the population is infected, which is the case in some countries in Africa.

From your description, the higher risk factors (drugs, homosexuality, and ethnicity) appear to be absent.

In short, what he did was risky, but his chances of other adverse consequences (other STDs or pregnancy) far outweigh the chances of contracting HIV, and those aren't particularly high either. In particular, the girl would have to be HIV-positive which is possible, but unlikely, and even then she would have had to transmit the virus to him, which is also not a certainty, indeed far from it, since even if she were infected, it would be quite recent and her virus levels would still be very low.

Rather than freaking out, spend your holiday doing some research, contact your doctor on Tuesday, and hope your son has indeed learned an important lesson.

your sons his own teacher at 15? i feel bad for you son not only may he contract aids but his parent has down syndrome.

You contract hiv, not aids, and to the average joe it is known as a deadly disease, contracted by various stereotypical groups of persons, but what the majority of people dont know is that HIV was invented by the united states government, and in what form it was invented still remains a clue. We are guinea pigs in a country who experiments on its people by creating disease and spreading it through vaccinations, but even as a tool for biowarfare, it is common to have a control system put in lace to allow for control of the weapon. This control can be a system used for political socioeconomic reasons, ranging from control of the population to various others including genocide, racism, research and well I'll just leave the rest for you to figure out. EVERYTHING you think you know about HIV, YOURE WRONG, you dont have a clue and you really dont want to. Your son does not have HIV, he does not have AIDS, he will not get AIDS, he does NOT have HIV. He is fine and you are paranoid, I am 100% he did not contract HIV, how could I know?...figure it out.