When Thomas Cristofoletti walked into the Hyperstar supermarket in Shiraz, Iran, he was stopped at the door. He had his camera over his shoulder, and the international-style grocery store was built inside a large mall with a strict policy against photography.
On a fall night two years ago, Jackie, the alleged victim of a brutal gang rape, recounted her story in vivid detail to two friends. She recalled the assault for Ryan Duffin and Alex Stock on picnic tables at the quaint University of Virginia campus.
Its name means "bending over in pain." It has no treatment or vaccine. Its symptoms resemble Dengue fever. And it has infected more than 1 million people -- 155 of them fatally -- since spreading to the Americas one year ago.