But don't toss your rubbers overboard yet; you know how these breakthroughs have a way of going backwards many times.

JK..

I don't know, I'm not sure I'd want someone to pump a syringe full of a weakened HIV virus into my body.

Using killed virus is a tried-and-true method of producing vaccines.  It's why no one gets polio anymore, for example.  Killed virus can't infect you, but do stimulate your immune system to produce antibodies.

If you read the warnings on the flu vaccine, there is always a chance of getting ill.

You realize that's basically how all vaccines work right?

Yes, and like Ms. Ova said when you get the flu shot, you still have a chance of getting sick.  I believe there are some other vaccines out there that can give you bad reactions also.  I knew someone who was given an experimental vaccine while in the army and she became paralyzed from a stroke caused by the vaccine.  Luckily she recovered but still, vaccines aren't perfect.