Is Bio Terror already happening???

This have been on my mind for quite some time, and with the bombings in Spain, London, Iraq, Bali, it just won't go away. I've done a little research at Earthtrends and done the math. I'll use the recent London bombings, since the numbers are fresh.
As of 2004 there were 55,000 reported cases of hiv/aids in the UK. With 700 wounded to varying degrees, 55 innocents dead, and the 4 bombers, it just seems reasonable that someone(s) injured in those bombings was infected with hiv/aids. In the rush to escape the carnage and help the wounded, is it safe to assume that some others were hit by infected blood and body pieces? If you have an open wound and get hit by flying blood from a person who is hiv positive, in that wound (not as far fetched as you would think in a bomb blast) wouldn't it be likely that you would become infected? Here's my point. Are the wounded being tested for exposure? Among the dead and wounded does the government know who was hiv positive or who had aids? Were the bombers (or any bombers for that matter) hiv positive? My thought goes on about this...use your own imagination to reach the chilling conclusion I have reached. I just don't want to put that thought down in writing for fear of being visited by the Federales...but it's something we have to think about and acknowledge and plan for. It sure is quiet out there about a scenario like this, so it really makes me wonder. If you think bombs are scary, bio terror is REALLY scary...and it might already be happening!