Turkey-Syria earthquake survivors face "horrific conditions" as cold threatens a "secondary disaster"

Deir Ballut, Syria — Widowed and homeless, Duaa Ghadban lost everything in a powerful earthquake, forcing her to take shelter in a camp for people displaced by war in Syria's northwest. The 7.8-magnitude quake early Monday has killed more than 19,700 people in Turkey and Syria and flattened entire blocks over residents in their sleep.

CBS News correspondent Chris Livesay reported Thursday from in front of one of those razed buildings — a six-story block that was home to 24 families — all reduced to crumbled concrete and twisted steel.

Two bodies were pulled out of the debris while our team was there, and there was another visible in the rubble. Rescuers said a teenage girl was still alive under the slabs of concrete. She managed to text a friend to let people know she was trapped.