I don't know if the link works but I just watched this show on the telly and I have to say it was really helpful in giving me a lot better understanding of viruses v humans.  

It's got me thinking, and it's shocking, really I think I am in shock.  I knew the people who study infectious diseases have been upset for a while now, it's been years hasn't it, but this was to listen to them explain why they feel the way they do.