HIV/AIDS Q&As

Answers to questions about HIV/AIDS
This section contains answers to common questions about this topic. Questions have been suggested by health professionals, website feedback and requests via email.

* What is post-exposure prophylaxis treatment?
* I m pregnant and I have HIV. Is there a risk that I will pass HIV on to my unborn baby?
* What is the difference between HIV and AIDS?
* Is there a cure for HIV/AIDS?

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What is post-exposure prophylaxis treatment?
Post Exposure Prophylaxis (PEP) is a course of anti-HIV medicines that may prevent infection with HIV if you think you have been exposed to the virus. PEP can be given to you within 72 hours of possible infection though it should be given as soon as possible, preferably within one to two hours.

Explanation
PEP is a course of medicines available to anyone who has, or may have been, recently exposed to the HIV virus. This includes anyone who has either had unprotected sex or sex where a condom failed. Health workers who may accidentally be passed HIV via infected needles can also have PEP. PEP is strictly prescribed because there is a very short period of time (72 hours) after contact with the HIV virus in which it can be effective. After this point, the virus can't be reached with these medicines because it has entered the CD4 cells in the body. PEP is recommended if you have:

* had vaginal or anal sex with someone who is known to be HIV-positive;
* had unprotected anal sex with someone and you do not know if they are HIV-positive or not;
* shared medical injecting equipment;
* a needle stick-injury;

PEP treatment may also be considered in other circumstances. It isn't recommended for people who have oral sex without ejaculation into the mouth.

You will have an HIV test before the medicines can be prescribed to check that you don't already have HIV. You will need to take medicines for about four weeks.

Side-effects of PEP can be severe and include feeling sick, being sick, diarrhoea and tiredness. If the side- effects are severe, you may need to take time off work and need day-to-day help with activities such as shopping. You also need to try and stay healthy by eating well and getting enough sleep. Once you have finished the course, you should feel better.

PEP is available at sexual health clinics, particularly specialist HIV clinics, and accident and emergency departments of hospitals. However, not every clinic or accident and emergency department will have PEP available. After 72 hours, you won't generally be prescribed it.

PEP doesn't replace the need for safe sex and not sharing injection equipment. Even if you take these medicines within the time period, complete the course and take the medicines in the correct way, there is still a chance that you can develop an HIV infection. Condoms are a more effective way of preventing HIV.

PEP is a last resort but you can ask for it to be prescribed if you know you have, or may have been, exposed to HIV. For example, if a condom breaks and the person you have had sex with is HIV-positive. While you are taking PEP and after you have finished your course of PEP, you can still get HIV and should continue to have safe sex using a condom.

If you need to take these medicines, ask your doctor to explain how they should be taken. Always ask your doctor for advice and read the patient information leaflet that comes with your medicine. You will need follow-up visits three and six months after your treatment finishes to check you haven't become infected.

Further information
* NAM
020 7840 0050
www.aidsmap.com
* Terrence Higgins Trust (THT)
0845 12 21 200
www.tht.org.uk

Sources
* Fisher M, Benn P, Evans B. UK Guideline for the use of post-exposure prophylaxis for HIV following sexual exposure. Int J of STD & AIDS 2006; 17:81-92
* V post-exposure prophylaxis: Guidance from the UK Chief Medical Officers' Expert Advisory Group on AIDS. Department of Health, September 2008. www.dh.gov.uk
* Post Exposure Prophylaxis (PEP). Terrence Higgins Trust. www.tht.org.uk, accessed 29 August 2009;
* After you've taken PEP. Terrence Higgins Trust. www.tht.org.uk, accessed 29 August 2009;


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I am pregnant and I have HIV. Is there a risk that I will pass HIV on to my unborn baby?
In the UK it's not common for a woman to pass HIV to her baby because precautions can be taken before, during and after birth to reduce the risk of transmission.

Explanation
If you're healthy and living with HIV, you will be encouraged to use anti- HIV medicines in the last few months of your pregnancy until your baby is born. If the virus is well controlled with these medicines, you may be able to plan for a vaginal delivery. Sometimes your baby may need to be born by caesarean section. Your baby will usually need to be given anti-HIV medicines in the first few weeks of life to prevent infection. If you have HIV, you can bottle feed your baby to prevent passing the virus on through your breast milk.

If your male partner is HIV positive, sperm washing is available to reduce the risk of transmission of HIV when getting pregnant. This involves rapidly spinning semen in a laboratory to allow separation of the virus.

All pregnant women are offered an HIV test during the early part of their pregnancy. Talk to your GP for further information about pregnancy and HIV.

Further information
* NAM
020 7840 0050
www.aidsmap.com
* Terrence Higgins Trust (THT)
0845 12 21 200
www.tht.org.uk

Sources
* De Ruiter A, Mercey D, Anderson J. British HIV Association and Children's HIV Association guidelines for the management of HIV infection in pregnant women. HIV Medicine 2008; 9: 452-502;

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What is the difference between HIV and AIDS?
HIV is a virus called the human immunodeficiency virus. If you have HIV, you have this virus in your body. AIDS, or acquired immunodeficiency syndrome, is the general name given to the disease which HIV causes once your immune system is weakened. AIDS is no longer a common term used by medical professionals, who now use the terms of advanced or late-stage HIV infection.

Explanation
If you have HIV, you may have no symptoms and feel well. After a number of years (the length of time differs between people) you may start to get infections. This is because your immune system, which usually fights off these infections, isn't working properly.

When this happens, the number of CD4 cells which fight infections has decreased so much that your body is vulnerable to infections. If you develop certain life-threatening illnesses, this is known as advanced HIV infection (AIDS).

HIV doesn't directly cause a specific type of infection, but it weakens the body's ability to fight illnesses. This means you are vulnerable to infections, pneumonias and cancers which are linked to HIV.

AIDS is now more often called late-stage or advanced HIV as this more clearly describes how the condition develops.

Further information
* NAM
020 7840 0050
www.aidsmap.com
* Terrence Higgins Trust (THT)
0845 12 21 200
www.tht.org.uk

Sources
* HIV and AIDS. Terrence Higgins Trust. www.tht.org.uk, accessed 29 August 2009;

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Is there a cure for HIV/AIDS?
No, there isn't a cure.

Explanation
The medicines which you can take for HIV/AIDS aren't a cure. They work in different ways to target the virus and how it replicates (multiplies) so less of the virus is in your body. The medicines can't remove the virus completely from your body. They can help you have a near-normal life expectancy and a full and active life.

Further information
* NAM
020 7840 0050
www.aidsmap.com
* Terrence Higgins Trust (THT)
0845 12 21 200
www.tht.org.uk

Sources
* HIV and AIDS. Terrence Higgins Trust. www.tht.org.uk, accessed 29 August 2009;

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Related topics *
* Childbirth - caesarean delivery
* Childbirth - vaginal delivery
* Pregnancy health
* Stages of pregnancy

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HIV/AIDS factsheet
Visit the HIV/AIDS health factsheet for more information.

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