1. HIV and AIDS
Chapter 25-Lesson 3 & 4

2. What is HIV/AIDS?? HIV causes AIDS
HIV or the human immunodeficiency virus is a virus that attacks the immune system
AIDS or the acquired immune deficiency syndrome is a disease in which the immune system of the patient is weakened
AIDS is the advanced stage of HIV

3. How HIV attacks cells HIV attaches to cell surface
Virus core enters cell and goes to nucleus
Virus makes a copy of its genetic material
New virus assembles at cell surface
New virus breaks away from host cell

4. How HIV is transmitted
Does not survive well on surfaces such as toilets or telephones!!
You are not at risk of contracting HIV if you are in the same classroom or work with someone who has HIV
It cannot be transmitted by touching!

5. How HIV is transmitted Sexual intercourse
Can be transmitted through any form of sexual intercourse
During intercourse, secretions containing HIV can enter a partner’s bloodstream through tiny cuts in the body
The number of sexual partners a person has and having STDs that cause sores increases the risk of HIV

6. How HIV is transmitted Sharing needles Used to inject drugs
The needle or syringe can become infected with HIV
Anyone who uses that same needle can inject HIV directly into his or her bloodstream

7. How HIV is transmitted Mother to baby
A pregnant female who is infected with HIV can pass the virus to her baby
HIV can be transmitted through the umbilical cord and during delivery
Breast milk can also transfer the virus to a newborn