HIV stands for human immunodeficiency virus. It infects particular cells called CD4 cells that are found in the blood. CD4 cells protect the body against various bacteria, viruses and other germs.
After they become infected, the CD4 cells are destroyed by HIV. Although the body will attempt to produce more CD4 cells, their numbers will eventually decline and the immune system will stop working.
There is no cure for HIV, but there are treatments to enable most people with the virus to live a long and healthy life.
Acquired Immune Deficiency Syndrome (AIDS) is the final stage of HIV infection when your body can no longer fight life-threatening infections. With early diagnosis and effective treatment, most people with HIV will not go on to develop AIDS.
How common is HIV
The number of people living with HIV in the UK continues to rise. This is because more cases are being diagnosed and people are living longer due to more effective medication
The most recent statistics on the number of people in Northern Ireland living with HIV are available from the Public Health Agency website.
How you get HIV
HIV is found in the body fluids of an infected person,which includes semen, vaginal and anal fluids, blood, and breast milk. To get HIV, one of these fluids from someone with HIV has to get into your blood.
HIV is a fragile virus and does not survive outside the body for long. HIV is most commonly transmitted through vaginal or anal sex without a condom.
Other ways of getting HIV include:
- using a contaminated needle, syringe or other equipment to inject drugs
- transmission from a mother to her child before, during or shortly after birth however, with medical treatment it is possible to prevent the virus from being passed on by a mother to her child
- through blood transfusions however, since 1985 all blood donated in the UK must be screened for HIV - screening policies in the developing world may not be as rigorous, so there is a possible risk of developing HIV if you receive a blood transfusion in certain parts of the world
- through oral sex or sharing sex toys
HIV cannot be transmitted from:
- being sneezed on by someone with HIV
- sharing baths, towels or cutlery with an HIV-infected person
- swimming in a pool or sitting on a toilet seat that someone with HIV has used
- animals or insects such as mosquitoes
Saliva, sweat and urine do not contain enough of the HIV virus to infect another person.
People who are at increased risk
HIV can affect anyone but people who are at a higher risk include:
- men who have had unprotected sex with men
- women who have had unprotected sex with men who have sex with men
- people who have had unprotected sex with a person who has lived in, or travelled in, Africa
- people who inject drugs
- people who have had unprotected sex with somebody who has injected drugs
- people who have another sexually transmitted infection
- people who have received a blood transfusion while in Africa, eastern Europe, the countries of the former Soviet Union, Asia or central and southern America
Protecting yourself from HIV
Anyone who has sex without a condom or shares needles is at risk of HIV. The best way to prevent HIV is to use a condom for sex and to never share needles, syringes or other injecting equipment. Knowing your HIV status and that of your partner is also important.
You should use condoms for oral, vaginal and anal sex and pieces of latex (dental dams or plastic wrap) which act as a barrier, for oral sex on the vagina or anus.
Condoms are more likely to break during anal sex, so you should use generous amounts of water-based lubricant in addition to the condom to reduce the chances of the condom breaking.
Cuts, sores and bleeding gums increase the risk of spreading HIV so you should cover any cuts or sores before sex, or avoid sex until they are healed.
It is important to continue to practise safer sex even if you, and your sexual partner, both have HIV. This is because it is possible to expose yourself to a new strain of the virus that your medicine will not be able to control.
Further advice and information is available on the link below
If you inject drugs, do not share needles as this could expose you to HIV and other blood-borne viruses. Speak to your GP or drug counsellor about needle exchange programmes and methadone programmes if you are a heroin user.