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.
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.