Man Pulled From Rubble in Haiti Nearly 4 Weeks After Earthquake

It isn't clear how long the man, whose first name is Evans, was trapped, the officials said. The man appeared disoriented; he said someone had brought him water while he was trapped.

He was found at the Croix Bossal market, where he sold rice, and his family said he had been missing since the devastating earthquake on Jan. 12.

Footage shot shortly after he was admitted to the field hospital showed a severely emaciated man in a checkered shirt.

"I thought he was dead, but God kept him from dying," his mother told CNN.

Scientists say that survival beyond 10 days, for someone who is trapped, requires an unusual combination of circumstances, including an uninjured, healthy victim and access to water and air. But a defining feature of the Haiti quake has been the remarkable number of people rescued from collapsed buildings.