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HIV (human immunodeficiency virus) is a virus that attacks the body’s immune system. HIV hurts the immune system by destroying cells called CD4 cells, better known as T cells. These cells help the body fight infections. Eventually, the body doesn’t have enough T cells to fight infections and cancers a healthy immune system can easily fight. These are called opportunistic infections. In this final stage of HIV infection, a person is considered to have AIDS (acquired immunodeficiency syndrome).
HIV is spread through certain body fluids, such as blood and semen. The most common way to get HIV is through unprotected sex with someone who is infected. Another way HIV spreads is through sharing drug needles, or when someone’s blood comes into contact with the blood of an infected person. A woman can pass HIV to her child during pregnancy or childbirth.
A person with HIV has the virus for life because it stays in the body. There is no cure. But there are medicines that can control the infection and prevent HIV from becoming AIDS. With treatment, a person with HIV has the ability to live a normal and healthy life.
It’s important to know if you’ve been exposed and get tested so you can take the medicine in time to fight the virus and keep your immune system healthy.
Symptoms of HIV infection depend on the stage of infection.
See a doctor immediately if you have been exposed to HIV. HIV may be prevented if a certain medicine is taken within 72 hours of exposure.
You can’t rely on symptoms to tell you that you have HIV. Only HIV testing will tell you if you have the infection. About 1 in 7 Americans with HIV is not aware they have it. The Centers for Disease Control and Prevention recommends that everyone between the ages of 13 and 64 gets tested for HIV at least once. People who believe they may have been exposed to HIV or who are at higher risk for HIV should consider getting tested more frequently.
You are at a higher risk for HIV infection and should be tested if you:
HIV infections are caused by the HIV virus that can spread:
To test for HIV infection, these tests are available:
Talk to your doctor about which test is best for you. Follow up with your doctor if you have an HIV test that comes back positive (shows you have the virus).
See a doctor immediately if you have been exposed to HIV. HIV may be prevented if a certain medicine is taken within 72 hours of exposure to the virus.
Treatment begun later can’t cure you. However, certain medicines can slow down the spread of the virus. Medicines that treat HIV are called antiretrovirals (ARVs) because the HIV virus is one type of retrovirus.
Doctors use a combination of ARV medicines to treat HIV infection. This is called antiretroviral therapy (ART). This therapy can keep you healthy for many years and reduce your chances of giving HIV to someone else.
Everyone infected with HIV should have ART, no matter how long they’ve been infected, how healthy they are, or whether they have symptoms. The sooner you start treatment, the better it will work to keep you healthier longer.
Some forms of HIV are resistant to antiretroviral medicines. You can reduce the risk of drug-resistant HIV by taking your medicine exactly as prescribed.
Not having oral, vaginal, or anal sex is the only sure way to prevent HIV infections. However, the risk of getting an HIV infection is much lower if you:
If you are infected with HIV, prevent spread of HIV by taking your medicine. The best thing you can do to prevent spreading HIV is to get ART and take your medicine exactly as the doctor tells you. When you suppress the virus, you reduce the chance that you will spread it to someone else.