I can't imagine what it must be like to have been one of the passengers sitting near Andrew Speaker on one of his trans-Atlantic flights, worrying that you've been exposed to an extremely drug-resistant form of TB. Hopefully, no one was infected by his escapade, but the case has brought TB back into the public spotlight. For the general public, the disease is of low concern, because it has a low incidence rate in the U.S. and is typically curable. But as the Speaker incident showed us, not only are there are more serious forms of the disease, but TB isn't as rare as you might think.

Want to know more about TB and Andrew Speaker's situation? WebMD has an informative article that'll get your questions answered.