Question 1

What is the difference between HIV and AIDS?

Accepted Answer

HIV is the virus that attacks and damages components of the immune system. AIDS is the advanced disease stage that can develop in some people after prolonged, severe immune-system damage.

Question 2

How does HIV affect the immune system?

Accepted Answer

HIV damages T lymphocytes, which are important for coordinating immune responses. As their function declines, the body becomes less able to control infections.

Question 3

What are opportunistic infections?

Accepted Answer

These are infections that can cause serious illness when immune defence is greatly weakened. The weakened immunity makes it harder for the body to control infections that are usually less serious in a healthy person.

Question 4

Does every person with HIV immediately develop AIDS?

Accepted Answer

No. HIV infection and AIDS are different stages. Without effective treatment, infection can progress and severely damage immunity, but appropriate medical treatment can prevent or greatly delay progression toward AIDS.

HIV and AIDS 3D Lab: How HIV Weakens Immunity

About this lab

Practice