Presentation on theme: "Chapter 25 HIV/AIDS and STIs"— Presentation transcript:
1 Chapter 25 HIV/AIDS and STIs Lessons Three and FourHIV/AIDS and TreatmentPgs
2 AIDS and HIVAIDS (Acquired Immune Deficiency Syndrome), a disease in which the immune system is weakenedHIV is the Human Immunodeficiency Virus and it attacks the immune systemIn 2000, AIDS was the fifth leading cause of death among adults ages 25-44
3 Teens at RiskThe overall rate of new cases of HIV has fallen since 1985, but there has been no decline in the number of youth ages 13 to 24 that are diagnosedTeens have one of the fastest growing rates of HIV infectionHIV can be prevented by abstaining from sexual activity and injecting drugs
4 HIV and the Human BodyHIV invades cells of the immune system. The virus takes over the cells and destroys them. The new virus infect other cells and the process continues to repeat.The immune system is less capable of preventing infections and cancer. The individual will suffer one illness after another.HIV does not necessarily mean a person has AIDS. AIDS is the advanced stage of HIV.
5 HIV and the Human BodyHIV causes the body to be susceptible to other infectionsOpportunistic infections occur in individuals who do not have healthy immune systemsCancer often develops as a result of HIV
6 How HIV is TransmittedHIV lives inside cells and body fluids. It does not survive well in the air or on surfaces such as telephones and toiletsIt cannot be transmitted through foodHIV can only be transmitted by an infected person through blood, semen, vaginal secretions, and breast milk
7 HIV Transmission Sexual contact (intercourse and oral sex) Needles for drug use. Contaminated needles can send HIV directly into the bloodstream.A pregnant mother with HIV can pass it to her baby through umbilical cord blood and during delivery. HIV can also be passed through breast milk
8 HIV Transmission HIV has NOT been shown to be spread through: Insect bitesSweatSneezingCasual physical contact like shaking hands and hugging
9 Stages of HIV HIV develops in stages over several years. About half of all people with HIV develop symptoms about 3 to 6 weeks after becoming infected.Symptoms include fever, rash, headache, body aches, and swollen glands. These symptoms will disappear and are often mistaken as a flu
10 Asymptomatic StageAfter the flulike symptoms disappear, a person enters the asymptomatic stage. During this stage there are no symptomsThe asymptomatic stage can last anywhere from 6 months to 10 yearsEven though no symptoms are present, the virus continues to grow and the person can infect others.
11 Symptomatic HIV Infection The symptomatic stage is marked when infections start to take over.Symptoms occur as a result of a severe drop in immune cells.The symptoms may include swollen glands, weight loss, and rashes
12 AIDSAIDS is the latter stage of the HIV infection. The immune system is damaged and there are one or more opportunistic infections or illnesses.By the time AIDS develops, HIV has often attacked brain cells, causing difficulty in thinking and remembering
13 Detecting HIV EIA TestEIA Test-a blood test that screens for the presence of antibodies The EIA may give inaccurate results for two reasons:1. The test could come back negative in the early stages because the antibodies have not developed yet.2. Other health conditions can cause a false positive reading.
14 Detecting HIV Western Blot Test The Western Blot Test is the most common test for HIV used in the U.S.If done properly, it is 100% accurate
15 Health Services Back in the 1980’s there were no treatments for HIV Since then, many medications are used to treat HIV and prevent complicationsThere is still no cure for HIV/AIDS but treatment can extend and improve the quality of life
16 Abstinence and HIV/AIDS Avoid drug use or the pressure to engage in sexual activity Leave parties where things get out of controlPractice refusal skillsChoose your relationships carefully. Don’t date people who you know are sexually active. Avoid drug users.