The Chance Of Hiv Transmission Through Needles: With Blood Transfusion Needle Sharing And Needle Prick
This table shows the chance of contracting HIV by means other than sex. Please note the much higher likelihood of getting HIV through needle sharing.
|1 transmission per 500 exposures||1 transmission per 160 exposures|
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How To Prevent The Spread Of Hiv
People living with HIV can use the following to prevent transmitting it to others:
- Pre-exposure prophylaxis : This is a daily pill that contains two antivirals called tenofovir and emtricitabine. When a person takes it daily, PrEP can reduce the risk of acquiring HIV through sex by
- of a recent potential HIV exposure.
When Should You Get Tested For Hiv After Condomless Sex
Keep in mind, if you believe youve been exposed to HIV, its important to see a healthcare professional as soon as possible.
Theres no HIV test that can accurately detect HIV in the body immediately after exposure. Theres a time frame known as the window period before you can be tested for HIV and receive accurate results.
Regardless of the type of test you take after a potential HIV exposure, you should get tested again after the window period has passed to be certain.
People at higher risk of contracting HIV should get regularly tested as often as every 3 months.
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I Think I’ve Been Exposed To Hiv Can I Still Prevent Hiv Infection
There may be times when you have a high-risk exposure to HIV and you cannot or did not protect yourself. For example:
- The condom slipped or broke during use.
- Your partner has HIV and you usually use condoms, but didn’t the last time you had sex.
- Rape or a sexual assault.
- You shared a needle to shoot drugs with someone and you are not sure if he or she has HIV.
- You know that the person with whom you shared needles or had unprotected sex has HIV.
- Go to a hospital emergency room or health care setting right away so that you can get all of the care you need. Women can also get emergency birth control to prevent pregnancy. Medicaid and Medicare pay for PEP for rape and sexual assault survivors. The Crime Victims Board may also pay for PEP, call 1-800-247-8035. TTY: 1-888-289-9747, Monday – Friday 9:00AM – 5:00PM.If you have been raped or sexually assaulted, call the NYS Coalition Against Sexual Assault at 1-800-942-6906. TTY: 1-800-655-1789.
In these cases, if you seek medical care right away, you may be able to take medicines that may help you from getting infected with HIV. This is called
PEP has been used for people who come in contact with HIV by accident – like a nurse getting stuck by a used needle. Now, PEP can be used for more than just on-the-job accidents. Sometimes this is called nPEP. The “n” in nPEP stands for “non-occupational” which means that you did not get exposed to HIV at work. PEP is only for people who were just exposed to HIV and do not already have it.
How Do You Get Hiv From Sex
HIV is transmitted through semen , vaginal fluid, blood, and anal mucus. During sex without a condom the bodily fluids from one person can pass into the body of their sexual partner. This can happen through the mucous membranes of the penis, vagina and rectum, or sores in the mouth and throat.
You can only get HIV from someone who is living with HIV and has a detectable viral load.
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Are Hiv Medicines Used At Other Times To Prevent Hiv Transmission
Yes, HIV medicines are also used for post-exposure prophylaxis and to prevent perinatal transmission of HIV.
- Post-exposure prophylaxis PEP means taking HIV medicines within 72 hours after a possible exposure to HIV to prevent HIV infection. PEP should be used only in emergency situations. It is not meant for regular use by people who may be exposed to HIV frequently. For more information, read the HIVinfo fact sheet on Post-Exposure Prophylaxis .
- Prevention of perinatal transmission of HIVPregnant women with HIV take HIV medicines for their own health and to prevent perinatal transmission of HIV. After birth, babies born to women with HIV receive HIV medicine to protect them from infection with any HIV that may have passed from mother to child during childbirth. For more information, read the HIVinfo fact sheet on Preventing Perinatal Transmission of HIV.
Against All Odds: What Are Your Chances Of Getting Hiv In These Scenarios
Playing the HIV numbers game is lessand morerisky than you think.
EDITORS NOTE: Although the underlying ideas and messages in this article remain relevant, much HIV prevention research has been published since 2014, notably about there being effectively no risk of transmitting the virus if you are HIV positive and undetectable , as well as the effectiveness of pre-exposure prophylaxis . Go to #Prevention, #Undetectable, #TasP and #PrEP for the latest related updates.
Theres not a lot of certainty in these numbers. But they can be a good tool for understanding risk.
During sex, our risk perception is replaced by love, lust, trust and intimacy.
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No 1 Sharing A Needle: 1 In 159
About 6 percent of the HIV diagnoses in 2015 can be attributed to the use of injection drugs, according to the Centers for Disease Control and Prevention . The reason is that needles, syringes, and other equipment can contain blood, and therefore HIV, which can then be directly transmitted into the bloodstream. Under the right environmental circumstances, the virus can survive in a used needle for up to 42 days, according to the U.S. Department of Health and Human Services. In addition, using drugs can lower peoples inhibitions, making them less likely to use a condom during sex or to take preventive HIV medications, further increasing their risk.
- Reduce the risk. Although the number of HIV diagnoses among people who inject drugs has declined by 48 percent from 2008 to 2014, according to the CDC, experts worry that the rising opioid epidemic is putting new people at risk for getting the virus. To find substance abuse help, call the Substance Abuse and Mental Health Services Administrations national helpline at 1-800-662-HELP or visit its website, findtreatment.samhsa.gov, for a list of treatment facilities near you.
- Reduce the risk. People who inject drugs can help lower their risk of exposure to HIV by using a sterile needle and syringe for each injection sterile needles can be obtained without a prescription at pharmacies and through syringe services programs at state or local health departments.
Probability Of Getting Hiv From One Encounter
You have much higher odds of getting HIV from a blood transfusion than from unprotected sex. Nonetheless, unprotected sex definitely comes with risk and can cause you to get HIV from just one time with an infected person. How likely is it to get HIV from one encounter? The odds of getting HIV from vaginal sex to the female are 1 in 1,250 in high-income countries and 1 in 333 in low-income countries. For men, its 1 in 2,500 in high-income countries and 1 in 263 in low-income countries.
You also have the chance of HIV infection from one encounter through anal sex. For this type of penetrative sex, there are certain factors that impact the risk. The risk is 1 in 70 for the receptive partner with ejaculation or 1 in 154 without ejaculation. For the insertive partner, the odds are 1 in 161 when uncircumcised or 1 in 909 when circumcised.
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All Exposures Are Not Equal
The results of several meta-analyses suggest that some types of sex carry on average a higher risk of HIV transmission than others. Below are estimates from meta-analyses that have combined the results of studies conducted in high-income countries. For types of sex where meta-analysis estimates do not exist, numbers from individual studies are provided.
A meta-analysis exploring the risk of HIV transmission through unprotected anal sex was published in 2010.1 The analysis, based on the results of four studies, estimated the risk through receptive anal sex to be 1.4%. This risk was similar regardless of whether the receptive partner was a man or woman.
No meta-analysis estimates currently exist for insertive anal sex but two individual studies were conducted to calculate this risk. The first, published in 1999, calculated the risk to be 0.06% .2 However, due to the design of the study, this number likely underestimated the risk of HIV transmission. The second study, published in 2010, was better designed and estimated the risk to be 0.11% for circumcised men and 0.62% for uncircumcised men.3
A meta-analysis of 10 studies exploring the risk of transmission through vaginal sex was published in 2009.4 It is estimated the risk of HIV transmission through receptive vaginal sex to be 0.08% .
A meta-analysis of three studies exploring the risk from insertive vaginal sex was estimated to be 0.04% .4
Sex Toys Fingering Fisting And Hiv
Sex toys, such as dildos, come into direct contact with rectal/vaginal fluids and mucous membranes. This means sharing an uncleaned dildo or other toy can pass on HIV. Using sex toys on your own has no risk.
There is no direct risk of HIV from fingering or fisting , but be aware of being rough. Damage to anal/vaginal tissues, especially if there is any bleeding, will increase risk of HIV transmission if you then have anal, vaginal or oral sex later.
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When Both Partners Are Positive: What About Reinfection
Many HIV positive people have sexual partners who are also positive.
If both partners are positive this removes the anxiety of worrying about HIV.
Knowing about reinfection is important. If either partner has drug resistance or a different type of resistance this can be transmitted.
How often reinfection occurs is not known. The risk is probably at least as low as catching HIV the first time. This will be higher if viral load is detectable and dramatically less for someone on effective treatment.
The implications for your health if reinfection occurs will depend on how serious the resistance is.
This means knowing about both your and your partners treatment history.
If neither of you have resistance, or if you both have the same resistance, then reinfection is not a problem.
But if one of you has drug resistance, and a detectable viral load, then reinfection would stop these drugs from working.
What Is Art And How Does It Help Prevent Hiv
Antiretroviral therapy is a combination of medicines that slows down the effects of HIV in your body and can help you stay healthy for many years. It can also lower or even stop your chances of giving HIV to anyone else.
ART lowers the amount of HIV in your body sometimes to the point where HIV wont show up on standard blood tests. If your HIV viral load is so low that certain tests cant see it, its called undetectable. When someone has an undetectable viral load, they cant spread HIV to others during sex.
Its important to remember that even with an undetectable viral load, HIV is still present in your body. If you stop treatment your viral load can go up, making it possible to pass HIV to others you have sex with. Your doctor or nurse can help you find the treatment thats best for you to help keep your viral load low, so you can stay healthy.
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Chances Of Getting An Std From One Unprotected Encounter
Its understandable to wonder about the odds of getting an STD, including from a one night stand or other unprotected encounter. You might wonder whether its really such a big deal to have unprotected sexual contact. Of course, this is probably more of a concern for you if you recently had an unprotected encounter and are now unsure of whether you could have been exposed to an STD. Even if the person you were with didnt say anything about having an STD, its reasonable to wonder about the odds of catching an STD from that one encounter you had.
While it wont necessarily happen, it only takes one time coming in contact with an infected person to acquire a sexually transmitted disease. STDs can be spread from person to person through body fluids and/or skin contact, depending on the type. Because of this, the odds of catching an STD are high from just one time. You only need to come in contact with that infection to get it. The risk goes up from unprotected sex with multiple partners, but its still there from one partner and one encounter.
Even from having unprotected sexual intercourse one time, you have about a 30 percent chance of getting gonorrhea, chlamydia or syphilis from someone whos infected. So you can see that the chances of STD from one encounter are not 100 percent but that there are pretty good odds of getting one from just one time without protection.
The Chance Of Hiv Transmission Through One
This table shows the chance of contracting HIV through one-time unprotected rectal sex with a partner who is HIV-positive. As you can see, the chance of the âbottomâ person contracting the disease from an HIV-positive âtopâ is much greater than the other way around.
|Per exposure||1 transmission per 72 exposures||1 transmission per 909 exposures|
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How Is Hiv Transmitted Through Sex
HIV can be transmitted through semen, vaginal secretions, blood, and anal secretions. When a person doesnt use a condom during sex, its easier for semen, vaginal fluids, blood, and anal secretions to enter their body either being absorbed across the mucous membrane of the vagina or anus or entering the bloodstream directly.
Anal sex is a known risk factor for contracting HIV if other prevention methods are absent, especially for the receptive partner whose anus is being penetrated by the penis.
Vaginal sex can also lead to HIV transmission if other prevention methods are absent, especially for the receptive partner whose vagina is being penetrated by the penis.
Both anal and vaginal sex can also carry a risk of HIV transmission for the insertive partner .
Oral sex is thought to be very low risk. Rimming is also thought to very low risk.
No 3 Having Anal Sex : 1 In 909
The insertive partner is less likely than the receptive partner to get the infection from an HIV-positive partner. However, bodily fluids carrying the virus can enter the insertive persons body through the urethra or any cuts or sores on the penis.
- Reduce the risk. If the insertive partner uses a condom, that can cut the risk of HIV transmission by an average of 63 percent, according to the CDC. You can help lessen the chance that the condom will slip or break by using water- or silicone-based lubricants. In addition, be aware that condoms dont fully protect against certain sexually transmitted diseases that can be contracted through skin-to-skin contact, like syphilis and herpes.
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How To Know For Sure Whether You Are Pregnant
There is only one way to conclusively tell if you are pregnant. That is to take a pregnancy test
Most pregnancy tests can be taken by two weeks after having sexual intercourse.
Pregnancy tests work by monitoring the HCG in your body. This is a pregnancy hormone that is only present when you are pregnant. For this reason, if you tested positive, it’s fairly certain you are pregnant. If you tested negative, you may still be pregnant if you tested too early or at the wrong time of day, because the concentration of HCG increases slowly as the pregnancy develops.
Most tests work in such a way that either one or two lines or dots should appear. The first line is a control to make sure the test is working and the second line or dot indicates pregnancy.
If you are testing early it’s advisable to take the test first thing in the morning when levels of HCG in the urine are more concentrated. You can take the test at any time of day but in early pregnancy, this may result in a false negative.
Is It True That Gay Men Are More At Risk For Hiv Than Other People
Although anyone can be at risk for HIV, some people can be more at risk depending upon the types of sexual practices and drug use they are engaging in. Being gay does not necessarily mean you are at higher risk, but certain activities gay men sometimes participate in might put them at greater risk. Overall, the gay male population in Canada has higher rates of HIV infection than some other populations. Stigma and homophobia can affect a person’s ability to access information about safer sex specifically for gay men.
How Well Does Prep Work
PrEP is very effective when you take it every day. It reduces the risk of getting HIV from sex by more than 90%. In people who inject drugs, it reduces the risk of HIV by more than 70%. PrEP is much less effective if you do not take it consistently.
PrEP does not protect against other STDs, so you should still use latex condoms every time you have sex. If your or your partner is allergic to latex, you can use polyurethane condoms.
You must have an HIV test every 3 months while taking PrEP, so you’ll have regular follow-up visits with your health care provider. If you are having trouble taking PrEP every day or if you want to stop taking PrEP, talk to your health care provider.