Helo, I have worked with people with HIV/IDS.(former workplace) I must admit that it is very difficult, if not impossible, to identify someone who is only an HIV positive, but not necessarily having fully blown AIDS, unless they themselves tell you. It is however easier to know that someone has AIDS when they begin to exhibit signs and symptoms when their immune system begins to fail them.
1. I became aware abt one of my former colleagues HIV/AIDS status after observing sings of continuous sickness. i then ask them abt their health status and they confirmed to me that they were positive.
My answer to question #1.2 is YES!
The talk is not always good though at times sympathy is exercised.