Only a glimmer at this stage, but it appears to be one of the better glimmers we've had of late. There's been a trial of an HIV vaccine in Thailand. Interestingly, it was a combination of two other attempted vaccines that don't appear to be very successful. It's not an entirely successful vaccine, the people who got the vaccine were only 30% less likely to get HIV compared to those who got the placebo. It is however, a noticeable immune response, that has given HIV researchers some promising leads in looking for a more effective vaccines. I don't think I really need to say much about an HIV vaccine being a big thing.