HIV (human immunodeficiency virus) is the virus that causes AIDS (acquired immune deficiency syndrome). AIDS is a disease of the immune system that has treatment options, but no cure, at the present time. Most people just say “HIV/AIDS” when they are talking about either the virus (HIV) or the disease it causes (AIDS).
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HIV is a blood-borne virus. That means it can spread when the blood or bodily fluids of someone who’s infected comes in contact with the blood, broken skin, or mucous membranes of an uninfected person. Sharing needles or other equipment used for injection drug use and engaging in other risky behaviors are the two main ways that HIV is spread. Infected pregnant women also can pass HIV to their babies during pregnancy, delivery, and breastfeeding.
HIV destroys certain cells, called CD4+ cells, in the immune system—that’s the body’s disease fighting department. Without these cells, a person with HIV can’t fight off germs and diseases. In fact, loss of these cells in people with HIV is a key predictor of the development of AIDS. Because of their weakened immune system, people with AIDS often develop infections of the lungs, brain, eyes, and other organs, and many suffer dangerous weight loss, diarrhea, and a type of cancer called Kaposi's sarcoma. [
1]
The good news is that HIV isn’t the death sentence it was when the epidemic began. This is thanks in large part to a treatment called HAART (highly active antiretroviral therapy). HAART is a combination of three or more antiretroviral medications that can hold back the virus and prevent or decrease symptoms of illness.
How Many People Have HIV/AIDS?
HIV/AIDS has been a global epidemic for more than 25 years; today's youth have never known a world without it. In the United States, the estimates indicate that more than 1 million people are living with HIV or AIDS. [
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In 2007, 37,041 new AIDS disease cases were reported. Recently, the Centers for Disease Control and Prevention (CDC) published HIV incidence estimates using new methods. They found that in 2006, an estimated 56,300 new HIV infections occurred—a number that is much higher than the previous estimate of 40,000 new infections annually. This means that more people are infected with HIV than we originally thought. [
2]
CDC estimates that close to one-quarter of the people in the United States who are infected with HIV do not know they are infected. [
2]
Can You Tell if Someone Is Infected With HIV or Has AIDS?
You cannot tell by looking at them if someone is infected with HIV. A person can be infected with HIV for many years, and the virus may or may not progress to the disease of AIDS. A medical test is the only way to know if a person has HIV or has developed AIDS. [
1]
How Are Drug Abuse and HIV Related?
Drug abuse and addiction have been closely linked with HIV/AIDS since the beginning of the epidemic. Although injection drug use is well known in this regard, the role that non-injection drug abuse plays more generally in the spread of HIV is less recognized.
Injection drug use. People typically associate drug abuse and HIV/AIDS with injection drug use and needle sharing. Injection drug use refers to when a drug is injected into a tissue or vein with a needle. When injection drug users share “equipment”—such as needles, syringes, and other drug injection paraphernalia—HIV can be transmitted between users. Other infections—such as hepatitis C—can also be spread this way. Hepatitis C can cause liver disease and permanent liver damage.
Poor judgment and risky behavior. Drug abuse by any method (not just injection) can put a person at risk for contracting HIV. Drug and alcohol intoxication affect the way a person makes decisions and can lead to unsafe sexual practices, which puts them at risk for getting HIV or transmitting it to someone else.
Biological effects of drugs. Drug abuse and addiction can affect a person's overall health, making them more susceptible to HIV or, in people with HIV, worsen the progression of HIV and its consequences, especially in the brain. For example, research has shown that HIV causes more harm to nerve cells in the brain and greater cognitive damage among methamphetamine abusers than among people with HIV who do not abuse drugs. In animal studies, methamphetamine has been shown to increase the amount of HIV in brain cells.
Drug abuse treatment. Since the late 1980s, researchers found that if you treat drug abuse you can prevent the spread of HIV. Drug abusers in treatment stop or reduce their drug use and related risk behaviors, including drug injection and unsafe sexual practices. Drug treatment programs also serve an important role in getting out good information on HIV/AIDS and related diseases, providing counseling and testing services, and offering referrals for medical and social services. [
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How Are Teens Affected?
Young people are at risk for contracting HIV and developing AIDS. According to CDC, about 35,845 young people age 13 to 24 in the United States had been diagnosed with AIDS by the end of 2007. In the past, most of those cases were in adolescent males. That ratio is changing as more females become infected. [
4]
In youth, as in adults, some populations are disproportionately affected. That means that some populations are more affected than others. For example, Blacks/African Americans age 13 to 19 represent only 17% of the U.S. teenage population, but accounted for 72% of new AIDS cases in 2007. [
4] The reasons for this gap aren’t completely understood; in fact, Black/African American youth have lower rates of drug abuse than Whites and Hispanics. This remains a strong research priority for NIDA. [
4]
In general, middle and late adolescence is a time when young people engage in risk-taking and sensation-seeking behaviors that may put them in jeopardy of contracting HIV. Regardless of whether a young person takes drugs, unsafe sexual practices increase a person's risk of contracting HIV. But drugs and alcohol can increase the chances of unsafe behavior by altering judgment and decision making.
How Can Teens Protect Themselves?
The best way to protect yourself is to stay healthy and think clearly. Choose not to use drugs. Know that drug use can change the brain and affect the way people make decisions and weigh risks.
Why Is NIDA Studying HIV and AIDS?
Since the HIV/AIDS epidemic began, injection drug use has directly and indirectly accounted for about one-third of the AIDS cases in the United States. We now know that the poor judgment and impaired critical thinking that can result from non-injection drug abuse also can contribute in a big way to the spread of this lethal virus through risky behavior. [
5]
What Can I Do to Help?
Go to
http://hiv.drugabuse.gov/index.html for more information on learning the link between drug abuse and HIV/AIDS. On World AIDS Day—every December 1st—participate by spreading the word that drug abuse and HIV/AIDS can shorten lives. Tell your friends what you've learned and how they can avoid infection.
References
1.
Centers for Disease Control and Prevention, National Center for HIV, STD, and TB Prevention.
What Is HIV? (
http://www.cdc.gov/hiv/pubs/faq/faq1.htm):Atlanta, GA: CDC, DHHS. Revised October 2006. Retrieved June 2009.
2.
Centers for Disease Control and Prevention, National Center for HIV, STD, and TB Prevention.
Basic Statistics AIDS Cases by Exposure Category (
http://www.cdc.gov/hiv/stats.htm#exposure):Atlanta, GA: CDC, DHHS. Revised February 2009. Retrieved June 2009.
3.
National Institute on Drug Abuse.
Research Report Series on HIV/AIDS(
http://www.nida.nih.gov/ResearchReports/hiv/hiv.html):Bethesda, MD: NIDA, NIH, DHHS. Revised 2006. Retrieved June 2009.
4.
Centers for Disease Control and Prevention.
HIV/AIDS Surveillance in Adolescents, L265 Slide Series (
http://www.cdc.gov/hiv/topics/surveillance/resources/slides/adolescents/slides/Adolescents.pdf, PDF, 902 KB):Atlanta, GA: CDC, DHHS. Revised May 2009. Retrieved June 2009.
5.
World AIDS Day.
World AIDS Day (
http://www.worldaidsday.org/):Retrieved June 2009.[
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