Ever since this whole "swine flu" thing erupted it's been nothing but talk about humans, humans, humans. But what's it been like to be a virus these last few weeks? Today, we shrink down to take a look at life from the point of view of one of the world's smallest biological toxins. How, really, do viruses get out of one organism and travel to another? (Warning: It's pretty gross.) What perils face a virus that ventures outside the human body? Our microscopic tour guide is The Takeaway's favorite virus hunter, Dr. Susan P. Fisher-Hoch, an epidemiologist at the University of Texas School of Public Health and co-author of Level 4: Virus Hunters of the CDC.

If you want to see the view of the body a virus sees, all you have to do is watch Fantastic Voyage, a 1966 classic in which "four men and a beautiful lady" were shrunk down and sent into the bloodstream on a submarine (it was not yellow):