It's been several decades since the Human Immunodeficiency Virus (HIV) was discovered,and we've tried for those several decades, to develop a vaccine for this deadly virus.
HIV, if you haven't heard of it yet, is a virus that slowly wreaks havoc on your immune system. It is transmitted through bodily fluids such as blood. If you get this virus, your body may fight of the virus, but it is very (VERY) unlikely that it will remove it. It slowly eliminates your "Helper T cells" which are vital to an immune response. Over time, you would get something called AIDS. AIDS stands for Acquired Immunodeficiency Syndrome. When you have AIDS, your immune system basically can no longer fight off infections and you are highly vulnerable to simple diseases such as the common cold, which may be fatal.
Well, our wait for a vaccine may finally be over! A company named "Mymetics" has developed a vaccine that so far has worked in both primates, and have worked well in a Phase I clinical trial. They plan on running a larger trial in 2012.
Vaccines are stupid. they're injecting almost dead viruses and other stuff (mercury is one) into your blood stream. I NEVER had a shot before. NEVER. I've never been sick either
(I wasn't born in a hospital either.HAH!)
No vaccines + no grains and cow boob milk=No sickness :3