All the living generations of 45 families have been wiped from the Gaza civil registry, the health ministry says.
At least 2,215 Palestinians have been killed and 8,714 wounded in Israeli air attacks on Gaza this week. Among the dead are 720 children.
The death toll will surge significantly if Israel launches a ground invasion into the besieged territory of about 2.3 million people.
Source: Aljazeera
