Coming to your neighborhood

A brand new superbug: XDR TB, a drug-resistant strain of tuberculosis already starting to tear through Africa.

The TB bacillus, a bug that has been pesky but totally treatable since the advent of antibiotics in the 1940s, has suddenly morphed into something virtually incurable. And the disease is spread not with a complex exchange of bodily fluids, like AIDS or Ebola, but simply by laughing, talking, coughing or breathing.

And it's batting close to 1.000 folks.