The World Health Organization said on Tuesday that malnutrition in northern Gaza was "particularly extreme."
"The situation is particularly extreme in northern Gaza," said Richard Peeperkorn, WHO representative for Gaza and the West Bank.
He said that 1 in 6 children under two years of age were acutely malnourished in northern Gaza.
"This was in January. So, the situation is likely to be greater today," Peeperkorn added.
Gaza health authorities say 15 children have died of malnutrition or dehydration at one hospital in northern Gaza.
Nearly five months into Israel's air and ground assault on the Gaza Strip and resulting mass displacement, acute shortages of food have led to what the United Nations is describing as a nutrition crisis, part of a wider humanitarian catastrophe.
