Factual error: When Henry uses someone's mobile to call home, which would be overseas, he only presses about 4 numbers, when he should have had to press about 10.
Continuity mistake: When Maria and Lucas hear a boy crying out, Lucas rushes ahead, leaving Maria, who is badly injured in her right leg, to lag behind. But when Lucas reaches the boy, Maria is right beside them.
Continuity mistake: When the kid is writing down the names of missing people. He starts writing with his left hand while someone is talking to him. the scene cuts to show him writing from another angle and suddenly he is right-handed. There's no interruption between the scenes. In the rest of the movie he is right-handed.
Other mistake: In hospital, Maria's oxygen mask has a kink in the line near her mouth, which would mean she wouldn't be getting any oxygen at all - or very little.
Factual error: When Maria is in hospital, the device that controls the flow of the IV is around the wrong way and turned off - twice useless.
Continuity mistake: When Naomi is in hospital, her son gives her a piece of tangerine. One second the tangerine is between her fingers and the next second it's gone.
Suggested correction: It then shows her chewing with her head to the side - she ate it.