Finding a vaccine to prevent aids is a major challenge. HIV is one of the most complicated viruses there is. Here’s one novel way to attack the virus and prevent infection.

Over forty-million people worldwide are infected with the HIV virus. Treatment is costly and isn’t an option for most people in underdeveloped countries. A U.S. government study is looking at a vaccine to hopefully one day prevent the virus from ever spreading.

Waiting for the results of an HIV test can be nerve-racking to say the least. And many people don't even get the blood test because they're afraid of needles. Now there's another option. A test that doesn't require blood and gives quick results, so you don't have to sweat it so long.

A lot of research money is spent on HIV vaccines but now some of the focus has turned to microbicides. Why?

There is a test that may help detect the virus sooner, so patients can start treatment much faster.