Human: Why do people have to take blood tests to find out if they are HIV positive? Assistant: 
The reason is that there’s a lot of misinformation about the disease. People often think that it’s just a matter of being around someone who has AIDS, and then you get it too. But actually, most people who get AIDS got it from having sex with someone who had AIDS. So it’s not as easy as just getting it from being around someone who has AIDS.